No description available.

No description available.

Survey work has resolved certain reported anomalies in this system. In particular, TiNi was found to undergo two displacive phase transformations at temperatures near room temperature. Below 50°C the pseudo body-centered cubic compound undergoes a gradual distortion in an unusual second order phase transformation producing the "transition phase”, the existence of which is terminated by a typical martensitic burst transform nation at 20°C which produces the "martensitic phase”. The crystal structures of the parent phase and transformation products, and the transformation characteristics have been studied with X-ray and electron diffraction, electron microscopy, electrical resistance and density measurements. / Thesis / Master of Science (MS)

This thesis describes a study of the portion of the iron- manganese-sulphur constitution diagram important in steel solidification and ingot soaking (1300°C). Attempts were made to determine a ternary isotherm at 1300°G by microanalysis of samples comprising Mn and FeS contained in and equilibrated with iron pots. A levitation melting technique was used to equilibrate Fe-Mn sulphide and Fe at 1535°C· Diffusion couples between solid Fe - 3.16% Mn and liquid FeS wore reacted at l300°C, quenched and then microanalyzed to determine the stages by which manganese in the iron diffuses to the sulphide phase to produce the BMnS inclusions found in many stools. / Thesis / Master of Engineering (ME)

Thesis: Sc. D., Massachusetts Institute of Technology, Department of Metallurgy, 1945 / Vita. / Bibliography: leaves 134-140. / Sc. D. / Sc. D. Massachusetts Institute of Technology, Department of Metallurgy

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Metallurgy, 1964 / Vita. / Includes bibliographical references. / by Shigeo Saimoto. / Ph. D. / Ph. D. Massachusetts Institute of Technology, Department of Metallurgy

Thesis: M.S., Massachusetts Institute of Technology, Department of Metallurgy, 1949 / by Earle Robert Marshall. / M.S. / M.S. Massachusetts Institute of Technology, Department of Metallurgy

Выпускная квалификационная работа (магистерская диссертация) посвящена исследованию налогового планирования и налоговой оптимизации на предприятии. Предметом исследования выступают совокупность экономических отношений, направленных на деятельность предприятия по налоговому планированию и налоговой оптимизации. Основной целью магистерской диссертации является разработка теоретических положений по налоговому планированию и практических рекомендаций по проблеме налогового планирования и налоговой оптимизации. / Tax planning for many became one more source of financing and also a factor, increasing competitiveness of the produced goods and services. Heads are interested more in a tax planning, in tax minimization by lawful or illegal methods, as economy on tax payments in fact it is a reserve for increase in profit and consequently, increases in dividends. In these conditions, the importance tax planning increases every day.

Pulvermetallurgi är en tillverkningsteknik för en stor mängd maskinkomponenter såsom kugghjul, lager och filter. Tillverkningen sker genom sammanpressning och upphettning, eller sintring, av ett fint metallpulver för att på så sätt direkt skapa komponenter med önskad form, istället för att behöva skära bort delar av detaljen för att det ska erhålla den önskade formen. Detta är särskilt fördelaktigt vid kugghjulstillverkning, på grund av deras komplexa former. Tekniken är även ekonomiskt fördelaktig eftersom den knappt producerar något spillmaterial alls i jämförelse med alternativa tillverkningstekniker. Syftet med denna studie var att undersöka huruvida pulvermetallurgi är lämplig som tillverkningsmetod för kugghjul som ska användas i lastbilars växellådor, en applikation som kännetecknas av väldigt höga belastningar och driftsäkerhetskrav. Undersökningen genomfördes genom studie av tre fallstudier och en intervju. Resultatet löd att pulvermetallurgi har svårt att mäta sig med de alternativa tillverkningsmetoder som finns för denna typ av kugghjul när det gäller uppnådd komponentlivslängd, förmodligen på grund av svårigheter med att minimera porer. Dock kan en omställning till kugghjul tillverkade enligt pulvermetallurgiskt vis fortfarande vara ekonomiskt försvarbart tack vare teknikens kostnadsfördelar som erhålls ur en lägre grad av materialförbrukning. Ett företags val av tillverkningsteknik bör baseras på vilken teknik som kan skapa den bästa och långsiktigt hållbaraste ekonomiska utvecklingen. / Powder metallurgy is a manufacturing method for a vast amount of machine components, including gears, bearings and filters. The production is carried out through compression and heating, or sintering, of a fine metal powder, in order to directly produce components with the wanted geometrical dimensions instead of having to shape the components through cutting or machining procedures. This is especially advantageous when producing gears, because of their complex shapes. The technique is also economically advantageous since it barely produces any spill material at all incomparison to alternative manufacturing techniques. The purpose of this study was to examine whether powder metallurgy could be an appropriate manufacturing method for gears used in the transmission of a truck, an application that is characterized by high loads and strong demands on dependability of the gears. The investigation was carried out through analyzing three case studies and through one interview. The result stated that powder metallurgy has difficulties to compete with the other options of manufacturing methods that exists for this application when it comes to achievable component lifetime, which probably is a consequence of the difficulties in minimizing pores. Despite this may a switch to powder metallurgically manufactured gears still be economically sound thanks to the technology’s cost advantages due to the higher raw material utilization. A company’s choice of manufacturing technology should be based on which technology that can create the best and most long‐term sustainable economic development.

No description available.