Les alliages ferritiques Fe—14Cr renforcés par une dispersion d'oxydes (ODS) riches en Y, Ti et O sont envisagés comme matériaux de structure pour la prochaine génération de réacteurs nucléaires. Ils allient résistance à l’irradiation neutronique et excellentes propriétés mécaniques, notamment en fluage à hautes températures. Ce travail s'est positionné sur la compréhension des effets induits par de légères variations en oxygène et en yttrium autour d’une composition chimique de référence Fe—14Cr—1W—0,3Ti—0,3Y₂O₃. Nous avons montré que le paramètre crucial est la cinétique de précipitation des nanorenforts. Elle conditionne l’évolution de la microstructure globale que ce soit avant, après filage ou sous traitement thermique. Cette cinétique est propre à la nature des phases précipitant, à leur structure cristallographique et aux relations d'orientations à l'interface particules/matrice. Ce dernier paramètre détermine la stabilité des nanorenforts et par voie de conséquence les mécanismes de recristallisation, et in fine les propriétés mécaniques. La variation des teneurs en oxygène et en yttrium peuvent induire des états consolidés à peu près équivalents en termes de nanodispersion et de propriétés mécaniques bien que les mécanismes inhérents soient différents. Les enrichissements en oxygène et en yttrium conduisent tous les deux à une recristallisation du matériau à 1300°C mais avec des mécanismes radicalement différents. Les résultats de cette étude permettent de proposer des valeurs seuil à ne pas dépasser, 0,3% de Fe₂O₃ et 0,7% d’yttrium, pour conserver de bonnes propriétés mécaniques. / Fe—14Cr ODS ferritic alloys reinforced by a dispersion of oxides rich in Y, Ti and O are considered suitable structural materials structural for the 4th generation of nuclear reactors. They combine neutron irradiation resistance and excellent mechanical properties, especially creep properties at high temperatures. This work is dedicated to the understanding of the effects induced by a small oxygen and yttrium variation around a reference chemical composition: Fe—14Cr—0,3Ti—0,3Y₂O₃. We showed that the crucial parameter is the precipitation kinetic of the nano-reinforcements which is responsible for the microstructure evolution before, after or during the thermal annealing. This kinetic is proper to the nature of the precipitating phases, their structure and to the orientation relationships at the particle/matrix interfaces. This last parameter determines the stability of the nano-reinforcements, hence the recrystallization mechanisms and their mechanical properties. The concentration variation of oxygen and yttrium can induce similar consolidated states in terms od nano-dispersion and mechanical properties even if the underlying mechanisms are different. Both the oxygen and yttrium enrichments lead to a recrystallization of the material at 1300°C by compltetly different mechanisms. This study allows to propose threshold values of 0,3% Fe₂O₃ and 0,7% yttrium, that should not be exceeded in order to maintain the quality of the mechanical properties.

Master´s thesis is focus on the proces of mechanical alloying. It is the proces of modifying a hetegeneous mixture of powder materials into a homogeneous composite powder. Experiments are focus on three types of composite materials. A magnetic soft alloy Permalloy, ODS steel based on commercially available powder steel 434 LHC and low-activation high-chrome ODS steel 14Cr-2W. On composite powders are made a series of mechanical tests and chemicel analysis. Based on this tests and analysis it was possible to confirm the milling time needed to create fully homogeneous composite powder. Next step is compaction of composite powder into compact volume and another mechanical tests ana analysis of microstructure. In these analyzes to determine whether i tis necessary to use protective atmosphere during mechanical alloying. All three type of materials succesfull prepared by mechanical alloying. It was found that for created of a fully homogeneous composite powder is necessary to perform mechanical alloying for 24 hours. When processing of corrosion resistant materials, i tis possible to perform mechanical alloying in an air atmosphere. During mechanical alloying materials which are subject to oxidation, i tis necessary to use protective atmosphere.

京都大学 / 0048 / 新制・課程博士 / 博士(エネルギー科学) / 甲第21434号 / エネ博第376号 / 京都大学大学院エネルギー科学研究科エネルギー変換科学専攻 / (主査)教授 木村 晃彦, 教授 星出 敏彦, 教授 今谷 勝次 / 学位規則第4条第1項該当 / Doctor of Energy Science / Kyoto University / DGAM

Yes / The oxidative desulphurization (ODS) of light gas oil (LGO) is investigated with an in-house designed cobalt 11 oxide loaded on alumina (γ-Al2O3) catalyst in the presence of air as oxidizing agent under moderate operating 12 conditions (temperature from 403 to 473 K, LHSV from 1 to 3 hr-1, initial concentration from 500 to 1000 13 ppm). Incipient Wetness Impregnation method (IWI) of cobalt oxide over gamma alumina (2% Co3O4/γ-14 Al2O3) is used for the preparation of the catalyst. The optimal design of experiments is studied to evaluate the 15 effects of a number of process variables namely temperature, liquid hourly space velocity (LHSV) and 16 concentration of dibenzothiophene and their optimal values were found to be 473 K, 1hr-1 and 1000 ppm 17 respectively. For conversion dibenzothiophene to sulphone and sulphoxide, the results indicates that the 18 Incipient Wetness Impregnation (IWI) is suitable to prepare this type of the catalyst. Based on the 19 experiments, mathematical models that represent a three phase reactor for describing the behavior of the ODS 20 process are developed. 21 In order to develop a useful model for simulation, control, design and scale-up of the oxidation process, 22 accurate evaluation of important process parameters such as reaction rate parameters is absolutely essential. 23 For this purpose, the parameter estimation technique available in gPROMS (general Process Modelling 24 System) software is employed in this work. With the estimated process parameters further simulations of the 25 process is carried out and the concentration profiles of dibenzothiophene within the reactor are generated.

Yes / The deactivation of the oxidative desulfurization (ODS) catalysts is a challenge and is a major concern in industrial catalytic processes. In this work, an activated carbon (AC) was prepared from agricultural waste and modified to withstand the ODS activity loss over time. The AC was impregnated with manganese and coated with aluminum oxide to prolong the activity lifetime. The catalysts were characterized by nitrogen adsorption-desorption, scanning electron microscope, energy dispersive X-ray, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and transition electron microscope (TEM). The BET surface areas of the examined AC materials were 814.48 m2/g, 784.76 m2/g, and 755.03 m2/g for the AC, Mn/AC, and coated Mn/AC catalysts, respectively with a dominance of microporous pore size. The TGA showed that the coating layer retards the degradation of the active metal and suppresses phase transitions. XRD showed no change in the structure of the catalyst with a coating layer, and from the TEM analysis, the coating layer thickness was 3.6 nm. The kinetics of the ODS catalysts were investigated. It was shown that the ODS reaction follows the first-order kinetics and is not influenced by the coating layer. The activity decay was also investigated. It is found that the activation energy of the deactivation reaction over the coated catalyst was higher than the uncoated catalyst.

Ce travail de thèse s’est focalisé sur l’étude des alliages Fe-14%Cr nanorenforcés par dispersion d’oxydes obtenus par broyage à haute énergie à partir de poudres pré-alliées de la matrice et d’Y2O3. L’objectif était double : (i) étudier la cinétique de précipitation, en particulier la phase de coalescence, des oxydes en fonction de la teneur en élément d’addition (Ti, Y, O) lors de traitements thermiques à haute température et postérieurs à l’étape de consolidation, et (ii) d’analyser les hétérogénéités de déformations élastiques et élastoplastiques dans ces aciers en fonction de l’avancement de la précipitation. La microstructure et la nanostructure ont été étudiées par microscopie électronique en transmission (MET) et diffusion de neutrons aux petits angles (DNPA). L’ensemble de ces techniques a permis de mettre en évidence des comportements différents selon les teneurs en éléments d’addition. En particulier, l’ajout de titane induit un ralentissement très net de la coalescence des particules contrairement aux ajouts d’oxygène et d’yttrium. Ces variations de teneurs initiales influent sur la forme, la structure cristallographique des particules, sur les relations d’orientations avec la matrice et en voie de conséquence, sur les cinétiques de précipitation. Par conséquent, assurer un rapport Ti /Y supérieur à 1 et limiter l’apport en oxygène sont des garants de la stabilité des nanoparticules à hautes températures dans les aciers ODS. Le phénomène de recristallisation a également été observé à haute température dans les matériaux dans lesquels la coalescence des oxydes est largement avancée. Afin de corréler l’évolution des microstructures avec celle des propriétés mécaniques, une modélisation macroscopique du durcissement a ensuite été réalisée, en distinguant les différentes contributions (nanoparticules, taille de grains et dislocations). Le durcissement calculé à partir des observations expérimentales est en très bon accord avec les valeurs mesurées. Ces calculs rendent bien compte des variations entre alliages et mettent en évidence l’influence prépondérante de la taille des particules sur la dureté des matériaux. Enfin une étude fine des hétérogénéités de déformation des grains en fonction de leur orientation cristallographique a été menée par diffraction de neutrons. Ces résultats ont été confrontés à un calcul micromécanique en champ moyen. Cette dernière partie a montré l’existence de comportements locaux différents dans des matériaux présentant des comportements macroscopiques similaires. / This PhD work focused on the study of Fe-14%Cr alloys nanoreinforced by oxide dispersion obtained by high energy milling from pre-alloyed powders of the matrix and Y2O3.The main objectives were: (i) the study of the precipitation kinetics of oxides, in particular the coarsening, according to the content of added elements (Ti, Y, O) after consolidation and after heat treatments at high temperature. (ii) The elastoplastic and elastic deformations heterogeneities analyze in these alloys, depending on the progress of the precipitation. Microstructure and nanostructure were studied by Transmission Electron Microscopy (TEM) and Small angles neutron scattering (SANS).All of these techniques allowed identifying different behaviors depending on the added element contents. In particular, the addition of titanium induced a marked deceleration of oxide coarsening in contrast to those samples added oxygen and yttrium. These variations of initial contents have an influence on the form, the crystallographic structure of the particles, the orientation relationships with the matrix and consequently, the precipitation kinetics. Therefore, ensuring the ratio Ti/Y greater than 1 and, limiting the oxygen can guarantee the stability of the nanoparticles at high temperatures in the ODS alloys. The recrystallization phenomenon was also observed at high temperature in the materials of which the oxides coarsening is fast. In order to correlate the evolution of microstructure with the mechanical properties, a macroscopic model of hardening was then carried out by distinguishing the different contributions (nanoparticles, grain size and dislocations). The hardening calculated from experimental observations, is in good agreement with measured values. These calculations demonstrate the high influence of particle size on the hardness of materials. Finally, a detailed study of deformation heterogeneities of the grains according to their crystallographic orientation was carried out by neutron diffraction. These results were compared to a mean field micromechanics calculation. This last part has shown the existence of different local behaviors for materials presenting similar macroscopic behavior.

Dans le cadre du programme de recherche sur les matériaux de gainage pour les réacteurs à neutrons rapides au sodium, les aciers renforcés par dispersion d’oxydes (ODS) sont envisagés pour leur excellente résistance à l’irradiation et leur tenue mécanique à haute température. Néanmoins, des difficultés sont rencontrées quant à la maitrise de leur élaboration et de leur mise en forme, ainsi que sur la prédiction de leur comportement en fluage. Les travaux présentés visent à améliorer la compréhension des mécanismes de fluage d’aciers ferritiques renforcés par dispersion et à étudier les voies d’amélioration possible.Dans un premier temps, le fluage d’aciers ferritiques renforcés par dispersion obtenus par cobroyage et extrusion à été étudié grâce à deux aciers ODS à 14pd.% Cr et 18pd.%Cr, ainsi qu’un acier 18pd.%Cr renforcé par dispersion de nitrures (NDS). Une caractérisation mécanique et microstructurale (SEM – EBSD – EDX et STEM) d’éprouvettes sollicitées en fluage à respectivement 650°C et 800°C est réalisée les aciers ODS Fe18Cr et Fe14Cr. La faible déformation et la rupture brutale classiquement observée sur ce type d’acier est mise en évidence. La diminution continue de leur vitesse de déformation et l’absence d’évolutions microstructurales indiquent que le fluage se produit essentiellement dans le stade primaire. L’acier ferritique NDS a ensuite été étudié. Un phénomène de déformation superplastique (plus de 110%) a été mis en évidence à 650°C en traction entre 10-3 s-1 et 10-2 s-1, ainsi qu’une recristallisation dynamique continue au dessus de 10-2 s-1. En fluage à 650°C, l’acier NDS présente une faible déformation (moins de 1%) et une rupture brutale : il s’agit donc d’un comportement générique des aciers ferritiques renforcés par dispersion, indépendamment du type de précipité. La déformation se produisant lors du stade primaire du fluage, le comportement de ces aciers ODS et NDS a été modélisé en se basant sur l’approche de Kocks et Mecking, fondée sur l’activation thermique du glissement après franchissement des précipités par montée ou glissement dévié. Ce modèle fournit une origine physique à la contrainte seuil observée lors du fluage des aciers ODS. La déformation en fluage des deux ODS et de l’acier NDS a été simulée à partir de coefficients déterminés expérimentalement et de paramètres optimisés. Les lois de Norton, les densités de dislocation et les limites élastiques simulées sont cohérentes avec les valeurs obtenues par les essais de fluage, de traction et des mesures (STEM – EFTEM) de la densité de dislocations. Une investigation des causes de rupture brutale en fluage a ensuite été menée sur l’ODS 14pd.%Cr : grâce à un essai de fluage interrompu à 800°C alterné avec des recuits à 1050°C, la rupture brutale a été retardée et une déformation de 1.5% a été atteinte. Un suivi de l’endommagement par tomographie X et un essai de fluage après vieillissement semblent éliminer l’endommagement macroscopique et la phase σ comme cause de la rupture brutale. Un scénario basé sur une déformation critique a été proposé. Pour finir, les difficultés liées à la mise en forme des ODS ferritiques ont conduit à concevoir une nouvelle nuance ODS martensitique à 11pd.% Cr et à évaluer un nouveau procédé d’atomisation de poudres (GARS). Il apparait que la compaction directe après atomisation par la voie alternative n’améliore pas les performances de ces aciers. En revanche, après broyage, la nouvelle composition présente un potentiel intéressant en traction et en fluage à 650°C. / Within the French research program for Sodium Fast Reactor (SFR) core material, oxide dispersion strengthened (ODS) steels are considered for their resistance to irradiation swelling and their good creep properties at high temperature. Their elaboration, their processing and their creep mechanism still represent challenges for material science. The aim of this work is to improve the understanding of the creep mechanisms and to investigate new fabrication route to improve these materials.First, the creep of dispersion strengthened ferritic steels produced by mechanical alloying and extrusion is studied, based on two ODS steels with 14wt.%Cr and 18wt.%Cr, and a nitride dispersion strengthened (NDS) steel with 18wt.%Cr. A microstructural (SEM-EBSD-STEM) characterization has been carried out on the two ferritic ODS steels loaded at 650°C and 800°C: a low creep strain (<0.5%) and a brutal fracture are observed. The continuous decrease of the creep rate without any microstructural change indicates a late primary stage. Then the tensile and creep behaviors of the NDS ferritic steel have been studied: a superplastic deformation, up to 110%, has been evidenced at 650°C between 10-3 s-1 and 10-2 s-1, as well as a continuous dynamic recrystallization at strain rate higher than 10-2 s-1. However, during creep tests at 650°C, the NDS steel presents the same characteristics as the ODS steels: low creep strain and brutal fracture. This behavior seems to be generic for dispersion strengthened ferritic steels obtained by mechanical alloying, regardless the type of precipitate. As the deformation occurs during the primary stage, a Kocks and Mecking model has been developed based on the thermal activation of the dislocation glide after crossing the precipitate by climb or cross-slip. This model provides a physical explanation for the threshold stress observed during the creep of ODS steels. The creep strain of the two ODS steels and the NDS steel has been simulated with experimentally determined coefficients and fitted parameters. The simulated Norton laws, dislocation density and yield stress are consistent with experimental data obtained respectively by the creep tests, by dislocation density determination (STEM-EFTEM) and tensile tests. An investigation of the creep fracture mechanisms has been performed. The creep fracture was delayed using high temperature heat treatments at 1050°C between interrupted creep tests at 800°C on the Fe14Cr ODS steel and a total elongation of 1.5% has been reached by this means. By analyzing X-ray tomography and creep test after ageing treatment, it appears that the macroscopic elongated cavities and sigma phase are not likely to explain the brutal fracture, therefore a scenario based on a critical deformation is proposed. Finally, the processing difficulties of the ferritic ODS steel lead to the design of a new martensitic 11wt. % Cr ODS steel and the evaluation of a new atomization process (GARS). This new atomization process did not improve the mechanical properties of these steels. However, after milling, encouraging results are observed since the first mechanical and microstructural characterizations displayed good tensile and creep properties.

Les aciers ODS (Oxide Dispersion Strengthened) sont envisagés comme matériau de gainage du combustible pour les futurs réacteurs nucléaires au sodium de Génération IV. Ces matériaux présentent une excellente résistance au fluage à haute température et au gonflement sous irradiation, mais des interrogations subsistent quant à leur propriété de résilience. L'objectif de ce travail de thèse est alors de comprendre l'effet de différents paramètres (composition chimique, texture, vieillissement thermique…) sur le comportement à l'impact des aciers ODS et sur l'apparition de la rupture de type fragile. L'objectif à terme est d'appréhender l'apparition de ce type de rupture afin d'assurer l'intégrité des composants en acier ODS en conditions normales ou incidentelles.Dans un premier temps, cette étude a permis d'évaluer la stabilité de deux nuances d'acier ODS contenant 14%Cr et 18%Cr dans des conditions de vieillissement thermique. La nuance à 18%Cr a été écartée à cause de la formation d'une phase intermétallique fragilisante de type sigma à 600°C. Par contre, la nuance à 14%Cr est plus prometteuse puisque son comportement est resté stable entre 400°C et 600°C pour une durée de vieillissement maximale de 10000 heures, et ce même si des précipités de phases alpha', de Laves Fe2W et des carbures de chrome ont été observés. D'autre part, la texture morphologique, caractérisée par des grains allongés selon la direction de filage, est propice à la propagation de fissures intergranulaires selon cette direction. La texture cristallographique régit, quant-à elle, les micromécanismes de clivage. En effet, les entités microstructurales qui contrôlent la propagation du clivage sont des groupes de grains faiblement désorientés les uns des autres d'un point de vue cristallographique, et qui sont associés à la notion de grains effectifs. Enfin, le comportement en traction et en flexion d'une nuance d'acier ODS à 14%Cr a été modélisé, et un critère de rupture fragile basé sur une valeur de contrainte critique a été proposé. Ce modèle nous a alors permis de simuler des essais sur différentes géométries et de prédire l'apparition de la rupture fragile sur cette nuance. / The Oxide Dispersion Strengthened (ODS) steels have been identified as potential materials for fuel cladding in Generation IV nuclear reactors. They are characterized by a very good resistance to swelling under irradiation and to high temperature creep, but questions still remain about the impact toughness of these materials. The first aim of this work is to understand the effects of different parameters (chemical composition, texture, thermal ageing...) on the impact behaviour of ODS steels. The final objective is to predict the occurrence of the brittle failure on the ODS steel components in normal or incidental conditions.Firstly, this study assesses the stability of two ODS steel grades containing either 14%C or 18%Cr during thermal ageing. The 18%Cr steel grade has been discarded due to the growing of the brittle intermetallic sigma phase at 600°C. However, the 14%Cr steel grade showed a promising behaviour given the stability of its mechanical properties after thermal ageing between 400°C and 600°C, for a maximum duration of 10000 hours, and regardless of the presence of chromium carbides, alpha' and Laves phases. Then, the morphological texture characterized by elongated grains along the extrusion direction enhances the propagation of intergranular cracks along this direction. Meanwhile, the crystallographic texture controls the cleavage micromechanisms. Indeed, the microstructural entities that control the propagation of the cleavage crack are groups of grains which are characterized by low crystallographic misorientations and referred to as effective grains. At last, the tensile and bending behaviour of a 14%Cr ODS steel grade has been modelled. A brittle failure criterion based on a critical stress value had also been suggested. This model allowed us to simulate mechanical tests on different geometries and to predict the occurrence of the brittle failure.

[pt] O objetivo do trabalho foi desenvolver práticas e mecanismos que auxiliem no processo de inserção da responsabilidade socioambiental e da sustentabilidade em atividades ligadas à produção de refeições em cozinhas industriais, as UANs (Unidades de Alimentação e Nutrição). Para tal, foi selecionada uma unidade hospitalar e uma unidade institucional, pertencentes ao CBMERJ (Corpo de Bombeiros Militar do Estado do Rio de Janeiro). Ambas de forma independente desenvolvem ações sustentáveis e medidas socioambientais. O trabalho foi dividido em três etapas. A primeira etapa, constou de observação participativa em campo e foram selecionadas metas dos ODS que possuem conexão mais direta com as atividades que transcorrem nas UANs. A segunda etapa, constou daelaboração e aplicação de um questionário adaptado da escala de comportamento ambiental de Karp (1996), para três grupos, os funcionários e usuários das duas UANs. A terceira etapa consistiu na elaboração das recomendações de práticas sustentáveis para UANs. Os resultados apontaram que muitos comportamentos importantes para o contexto da sustentabilidade não fazem parte da rotina dos indivíduos e há carência de ações efetivas, mas possuem alto grau de interesse em participar de atividades voluntárias em prol do meio ambiente, algo positivo para a transição acontecer. O produto final deste estudo é o Manual de Práticas Sustentáveis, adaptável a diferentes contextos e locais. Ele propõe um conjunto de estratégias para dar início ao processo de transição do estado atual para um mais sustentável, contribuindo para os atuais debates de sustentabilidade alimentar. / [en] The objective of this work was to develop practices and mechanisms thathelp in the process of inserting socio-environmental responsibility and sustainability in activities related to the production of meals in industrial kitchens, the UANs (Food and Nutrition Units). For this, 01 hospital unit and 01 institutional unit were selected, belonging to the CBMERJ (Military Fire Department of the StateofRio de Janeiro,Brazil).Both independently develop sustainable actions and socio-environmental measures. The work was divided into3 stages. The first stage consisted of participatory observation in the field and selection of goals of the SDGs that have a more direct connection with theactivities that take place in the UANs. The second stage consisted of the elaboration and application of a questionnaire adapted from Karp s environmental behavior scale (1996), for 3 groups, employees and users of the 2 UANs. The third stage consisted of preparing recommendations for sustainable practices for UANs. The results showed that many important behaviors, for the context of sustainability, are not part of the individuals routine and there is a lack of effective actions, but they have a high degree of interest in participating in voluntary activities in favor of the environment, something positive for the transition to occur. The final product of this study is the Sustainable Best PracticesManual, adaptable to different contexts and locations. It proposes a set of strategies to start the process of transition from the current state to a more sustainable one, contributing to the current debates on food sustainability.

O desenvolvimento sustentável tem sido um grande desafio global e as empresas têm grande participação nesse processo, uma vez que movimentam a economia e geram empregos, consomem matérias-primas e poluem o meio ambiente. As grandes corporações são as que causam os maiores danos, mas podem contribuir para alcançar os Objetivos de Desenvolvimento Sustentável (ODS) e suas prioridades globais. A indústria da construção civil, especificamente, desempenha importante papel econômico e é responsável por um consumo significativo de recursos naturais e por um impacto ambiental bastante expressivo. Coibidas por pressões externas, de regulamentações, investidores e outras partes interessadas, as empresas do setor da construção civil têm feito seu relato de sustentabilidade de acordo com o modelo da Global Reporting Iniciative (GRI), que incentiva as empresas a definirem quais questões relativas à sustentabilidade são mais relevantes para sua cadeia de valor, por meio do princípio de \"materialidade\". O principal objetivo deste trabalho foi identificar como a construção civil brasileira impacta positiva ou negativamente os Objetivos de Desenvolvimento Sustentável (ODS), considerando os segmentos das construtoras, fábricas e cimenteiras. Um grupo de empresas representantes da construção civil brasileira foi selecionado para o estudo, que se dividiu em três etapas, sendo a primeira uma revisão sistemática de literatura a respeito dos impactos do setor da construção civil; a segunda uma análise de dados secundários, que são os relatórios de sustentabilidade das empresas estudadas; e a terceira uma etapa de entrevistas com especialistas do setor da construção civil. Na segunda etapa, com base nas matrizes individuais das empresas, foram elaboradas matrizes de materialidade unificadas para os segmentos do setor. Elas foram, então, validadas pelos especialistas da construção civil e comparadas com os dados encontrados na revisão sistemática de literatura. Após a validação das matrizes, conseguiu-se uma relação dos ODS que são impactados positiva ou negativamente pelos principais aspectos materiais do setor. Identificou-se que os principais ODS impactados positivamente são os de número 3, 4, 8 e 9; e os principais ODS impactados negativamente são os ODS 5, 6, 7, 10, 11, 12, 13, 15 e 16. Isso indica que apenas 4, dentre os 17 ODS não são diretamente impactados pelos aspectos materiais do setor da construção civil brasileira. Sendo assim, foram feitas sugestões para mitigação dos impactos causados que incluem, principalmente, medidas governamentais, em relação à regulamentação e fiscalização; e empresariais, a respeito do modelo de gestão. Tendo como base o Guia SDG Compass, as empresas poderão desenvolver uma estratégia de gestão que tenha o propósito de colocar a sustentabilidade no centro da estratégia empresarial. Desta forma, as empresas poderão desenvolver um modelo de gestão voltado para o futuro e para o alcance dos ODS e, assim, melhorar o diálogo entre todas as partes interessadas. Além disso, este trabalho agrega conhecimento teórico ao avançar na exploração da literatura e da pesquisa sobre os ODS, uma vez que eles, tendo sido lançados no final de 2015, ainda se tratam de um campo recente de pesquisa. O trabalho também avança no delineamento do panorama em que o setor de construção civil brasileiro se encontra frente à sustentabilidade organizacional, aos relatos de sustentabilidade com base nas diretrizes da GRI e ao desenvolvimento de matrizes de materialidade. / Sustainable development has been a major global challenge and companies have a strong stake in this process as they move the economy and generate jobs, consume raw materials and pollute the environment. Large corporations are the ones causing the greatest damage, but they can contribute to achieving the Sustainable Development Goals (SDG) and their global priorities. The construction industry, specifically, plays an important economic role and is responsible for a significant consumption of natural resources and a very significant environmental impact. Constrained by external pressures, regulations, investors and other stakeholders, companies in the construction industry have made their sustainability report according to the Global Reporting Initiative (GRI) model, which encourages companies to define which issues are more relevant to their value chain, it is the principle of \"materiality\". The main objective of this work was to identify how Brazilian civil construction positively or negatively impacts the Sustainable Development Goals (SDG), considering the segments of construction companies, factories and cement companies. A group of companies representing Brazilian civil construction was selected for the study, which was divided into three stages, the first being a systematic review of the literature on the impacts of the civil construction sector; the second an analysis of secondary data, which are the sustainability reports of the companies studied; and the third a stage of interviews with specialists in the construction industry. In the second stage, based on the individual corporate matrices, unified materiality matrices were elaborated for the segments of the industry. They were then validated by construction specialists and compared with the data found in the systematic literature review. After the validation of the matrices, it could be made a list of the SDG that are positively or negatively impacted by the main material aspects of the sector. It was identified that the main positively impacted SDG are those of numbers 3, 4, 8 and 9; and the main SDG negatively impacted are SDG 5, 6, 7, 10, 11, 12, 13, 15 and 16. This indicates that only 4 of the 17 SDG are not directly impacted by the material aspects of the Brazilian construction industry. Thus, suggestions were made to mitigate the impacts caused, which mainly include governmental measures, in relation to regulation and inspection; and business, regarding the management model. Based on the SDG Compass Guide, companies can develop a management strategy that aims to put sustainability at the center of business strategy. In this way, companies will be able to develop a future-oriented management model and to achieve the SDG and thus improve the dialogue among all stakeholders. In addition, this work adds theoretical knowledge in advancing the exploration of literature and SDG research, since they were launched at the end of 2015 and are still a recent field of research. The work also advances in the outline of the scenario in which the Brazilian civil construction sector faces organizational sustainability, sustainability reports based on GRI guidelines and the development of materiality matrices.