| Texto completo | |
| Autor(es): |
Antunes, L. H. M.
[1]
;
Hoyos, J. J.
[2]
;
Fonseca, E. B.
[1]
;
Beres, M.
[3, 4]
;
da Silva Farina, P. F.
[1]
;
Lopes, E. S. N.
[1]
;
Jardini, A. L.
[3]
;
Maciel Filho, R.
[3]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Sch Mech Engn, Rua Mendeleyev 200, BR-13083860 Campinas, SP - Brazil
[2] State Univ Ponta Grosso, Mat Engn Dept, Av Gen Carlos Cavalcanti 4748, BR-84030900 Ponta Grossa - Brazil
[3] Univ Estadual Campinas, Fac Chem Engn, Natl Inst Biofabricat, Av Albert Einstein 500, BR-13083852 Campinas, SP - Brazil
[4] Univ Fed Ceara, Dept Met & Mat Engn, Av Humberto Monte, BR-60445554 Fortaleza, CE - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 764, SEP 9 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
The influence of strain-induced martensitic transformation on the mechanical properties of a Co-28Cr-6Mo alloy produced using the direct metal laser sintering additive manufacturing technique was analyzed. Both the as-built and solution heat-treated (ST) specimens were subjected to conventional tensile tests. Furthermore, X-ray diffraction spectra were simultaneously acquired using a synchrotron light source. In addition, electron backscatter diffraction analysis was performed on the specimens before and after tensile testing. Both techniques revealed the occurrence of the strain-induced gamma-face-centered cubic -> epsilon-hexagonal close-packed phase transformation. The higher microstrain and preferential grain orientation of the as-built specimen favored the onset of the phase transformation. Moreover, the ductility of the ST specimen was significantly higher than that of the as-built specimen. This behavior was attributed to the isotropic properties of the randomly-oriented and equiaxed grains, increase in resistance to necking, and reduction in internal stresses caused by the solution heat treatment. (AU) | |
| Processo FAPESP: | 16/09350-2 - Desenvolvimento de implantes customizados em biomateriais metálicos utilizando sinterização direta de metais por laser |
| Beneficiário: | Rubens Maciel Filho |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Internacional |