Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 101-104.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1966. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--Marquette University, 2009. / Access available to Marquette University only. Scott Goldsborough, John P. Borg, Jon Kock, Henry Curran, Advisors.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1967. / Typescript. Vita. Description based on print version record. Includes bibliographical references.

Thesis (Ph.D.) - University of Queensland, 2004. / Includes bibliographical references.

Thesis (Ph.D.) - University of Queensland, 2005. / Includes bibliography.

Thesis (M.S.)--University of Wisconsin--Madison, 1968. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--Florida State University, 2006. / Advisor: Amy B. Chan-Hilton, Florida State University, College of Engineering, Dept. of Civil and Environmental Engineering. Title and description from dissertation home page (viewed Sept. 18, 2006). Document formatted into pages; contains xiii, 116 pages. Includes bibliographical references.

Thesis (M.S.)--Ohio University, November, 2004. / Title from PDF t.p. Includes bibliographical references (p. 60-62)

Orientador: Cesar Renato Foschini / Coorientador: Gilberto de Magalhães Bento Gonçalves / Banca: Carlos Alberto Soufen / Banca: Angelo Caporalli Filho / Resumo: As indústrias metalúrgicas de diversos segmentos buscam continuamente aperfeiçoar seus processos e reduzir custos de produção de estruturas metálicas. Variações em um processo térmico padronizado ou na configuração do produto podem causar alterações na microestrutura e nas propriedades mecânicas do, bem como, no comportamento mecânico do material. Assim, o presente estudo avaliou os efeitos das variações do ângulo de chanfro da junta em tubos de aço redondos AISI 4130 sem costura, quando soldados no processo TIG (Tungsten Inert Gas). Os tubos foram cortados com arco de plasma e preparados com ângulos, 30°, 45° e 60°, e 1 milímetro de altura da raiz. A soldagem foi realizada em dois passes, sendo o primeiro passe na raiz pelo método autógeno e o segundo de preenchimento com metal de adição arame-eletrodo AWSER80S-B2. As juntas soldadas foram submetidas a análises metalográficas de macrografia e microscopia óptica, para avaliação metalúrgica das zonas fundida e afetada pelo calor. Também foi realizado ensaio mecânico de tração e microdureza Vickers para verificar o desempenho mecânico e a dureza do material. A variável de interesse do estudo foi evidenciada por meio da estabilização do processo de corte e soldagem com uso de uma máquina rotativa digital desenvolvida no presente estudo. Os resultados obtidos evidenciaram uniformidade entre os cordões produzidos, variações nas geometrias dos cordões, no tamanho de grão e nas fases de transformação da microestrutura, com impacto n... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The metallurgical industries at several segments are continuously looking for improving their process and decrease metallic structures production costs. Modifications in a standardized thermal process or in the product configuration can leads to microstructure changes and in the mechanical properties,as well, in the mechanical behavior from the material. Thus, the current study made an assessment of the angle variation effect in steel round tubes joint AISI 4130 without seam, when welded by mechanized TIG process (Tungsten Inert Gas). The steel tubes were cross cut with plasma and prepared in three different angles 30°, 45° and 60°, with 1 millimeter height of root. The welding was made in two passes, the first one in the root by autogenous methode and the second one for filling using eletrode wire AWS ER80S-B2. The welded joints were submitted to metallographic test of macrograph and optical micrographics for metalurgical assessment in the melted zone and the heat affected zone. In addiction was made traction tests and micro hardness Vickers for verify the mechanical behavior and hardness from the material. The interest variable in this study, was evidenced by cut and welding process stabilization using a digital rotative machine developed in this study. The obtained results showed uniformity between weld beads produced with variation in the geometry, as well, in the grain size and in the fases transformations from the microstructure, with impact in the melted zone hardness ... (Complete abstract click electronic access below) / Mestre