Detalhes bibliográficos
| Ano de defesa: |
2012 |
| Autor(a) principal: |
Martins, Ivan Augusto |
| Orientador(a): |
Balancin, Oscar
 |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de São Carlos
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM
|
| Departamento: |
Não Informado pela instituição
|
| País: |
BR
|
| Palavras-chave em Português: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
https://repositorio.ufscar.br/handle/20.500.14289/881
|
Resumo: |
In this work is presented the characteristics of the steel C80U Modified, usually applied for bearing components produced through cold forming, as evaluated the influence of prior cold work on the microstructure after heat treatment by quenching and tempering. Starting from spheroidized carbides annealed structure, samples of strip steel were previously cold-rolled to different deformation degrees. The thickness reduction was based on the equivalent strain, calculated by numerical simulation in reference of a real cold formed part. These samples were quenched and tempered, and then the austenitic grain size for each different conditions of prior cold work was evaluated. By X-ray diffraction techniques the fractions of retained austenite for each degree of prior cold work were measured. Mechanical and metallurgical analysis were also carried out in rerolled strips as annealed in delivery condition, in order to characterize the fundamental properties related to drawing process. |
