Análise do comportamento mecânico e estudo do efeito de maclação mecânica do aço 316 LV sob estados de tração e compressão

• Ano de defesa: 2022
• Autor(a) principal: Corrêa, Leonardo Muthi
• Orientador(a): Kliauga, Andrea Madeira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Carlos; Câmpus São Carlos
• Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Mecânica - PPGEMec
• Palavras-chave em Português: Aço Inoxidável Austenítico; AISI 316 LV; Maclação Mecânica; F-138
• Palavras-chave em Inglês: Austenitic Stainless Steel; Mechanical Twinning
• Área do conhecimento CNPq: ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAO; ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA; ENGENHARIAS
• Link de acesso: https://repositorio.ufscar.br/handle/20.500.14289/17260

The design of new steels with high yield, ultimate strength and good ductility is one of the desirable goals of the industry. The ultra-high strength steels with twin induced plasticity (TWIP) effect are used in applications that demand high ultimate strength, tenacity and use at cryogenic temperatures. Nevertheless, the knowledge of the mechanical behavior of this class of materials under different load conditions is still an object of research. Austenitic stainless steels attend to this classification. In this work the mechanical behavior of a 316LV austenitic stainless steel was evaluated in tension and compression at different temperatures (-100 a 300 ºC) and strain rate of 10-3. The results of the mechanical tests were correlated to the microstructural transformations through evaluation by optical microscopy, x-ray diffraction and electron backscattered diffraction (EBSD) maps. The influence of temperature and strain rate on the mechanical twinning mechanism was analyzed. Based on the results, it was possible to propose a constitutive model proposed to predict the mechanical behavior