| Full text | |
| Author(s): |
Opini, Victor Carvalho
;
Fogagnolo, Joao Batista
;
Borras, Vicente Amigo
;
Caram, Rubens
;
Soyama, Juliano
Total Authors: 5
|
| Document type: | Journal article |
| Source: | POWDER METALLURGY; v. N/A, p. 7-pg., 2023-06-27. |
| Abstract | |
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) | |
| FAPESP's process: | 18/18293-8 - Titanium alloys: phase transformations and additive manufacturing applied to obtaining functionally graded materials |
| Grantee: | Rubens Caram Junior |
| Support Opportunities: | Research Projects - Thematic Grants |