| Texto completo | |
| Autor(es): |
Opini, Victor Carvalho
;
Fogagnolo, Joao Batista
;
Borras, Vicente Amigo
;
Caram, Rubens
;
Soyama, Juliano
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | POWDER METALLURGY; v. N/A, p. 7-pg., 2023-06-27. |
| Resumo | |
Near beta Ti alloys typically show high specific strength and provide a wide spectrum of mechanical properties with different heat treatments. In this work, a commercial near beta Ti alloy Ti-5553 (Ti-5Al-5V-5Mo-3Cr-0.5Fe) was prepared through powder metallurgy using the blended elemental powder approach. Additionally, alloy modifications with 6 wt.% Nb (Ti6Nb-5Al-2.5V-5Mo-3Cr-0.5Fe) and 12 wt.% Nb (Ti-12Nb-5Al-5Mo-3Cr-0.5Fe) were investigated. Specimens were prepared by uniaxial cold compaction of blended powders at room temperature with sintering conducted at 1300 degrees C for 2 h under Ar atmosphere. Microstructure investigation revealed reasonable homogenisation of alloying elements and colony sizes in the order of 80-100 mu m with porosity below 10%. Moreover, the bending strength of as-sintered Ti-12Nb-5Al-5Mo-3Cr-0.5Fe was about 850 MPa and the micro-Vickers hardness was approximately 370 HV. The alloy modifications with Nb increased strength without loss in flexural strain. (AU) | |
| Processo FAPESP: | 18/18293-8 - Ligas de titânio: transformações de fases e manufatura aditiva aplicadas na obtenção de materiais com gradientes funcionais |
| Beneficiário: | Rubens Caram Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |