Influência do tratamento criogênico na microestrutura, dureza e resistência mecânica do aço SAE 4340 após processo de soldagem MAG
Recent studies have shown that the application of cryogenic treatment in steel can cause improvements in mechanical properties and microstructure. However, the effects in the material are poorly understood. Some authors observed improvement in roughness, microstructure, abrasion resistance, hardness...
| Autor principal: | Silva, Lucas Stemmler da |
|---|---|
| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/16299 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: |
Recent studies have shown that the application of cryogenic treatment in steel can cause improvements in mechanical properties and microstructure. However, the effects in the material are poorly understood. Some authors observed improvement in roughness, microstructure, abrasion resistance, hardness, fatigue resistance, among others. This study looked steel specimens with high hardenability, especially the SAE 4340 steel, chosen for its wide use, which passed by welding, cooling to room temperature and subsequent cryogenic treatment at various times, to observe the improvements provided by the thermal treatment regarding its microstructure, hardness and mechanical resistance. The treatment proved effective in raising the hardness of the specimens in relation to a base body, also increasing its mechanical resistance, according to the microstructural changes found. |
|---|