Abstract
A novel Ti-6Al-6Mo alloy sample was fabricated by laser solid forming (LSF) using blended elemental powders as raw material. The microstructure of the as-deposited sample was investigated, and the effects of solution and aging treatment on the microstructure and microhardness of LSF Ti-6Al-6Mo alloy were discussed. The results show that the heat treatment conducted in this study has no obvious effect on the morphologies of prior b grains of the alloy. The solution temperature, solution time, and cooling method after solution treatment have a significant effect on the morphology and size of α phase in the prior β grains and the microhardness of the LSF Ti-6Al-6Mo alloy. When the aging time exceeds 4 h, the microstructure and microhardness of the alloy change little with aging time. Based on the precipitation mechanism of the primary α laths and secondary α laths and their strengthening effect on the b matrix in LSF Ti-6Al-6Mo alloy under different heat treatment conditions, the influence mechanism of heat treatment on the microstructure and microhardness of LSF Ti-6Al-6Mo was revealed.
| Translated title of the contribution | 热处理对激光立体成形新型Ti-6Al-6Mo合金显微组织和硬度的影响 |
|---|---|
| Original language | English |
| Pages (from-to) | 357-365 |
| Number of pages | 9 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 48 |
| Issue number | 2 |
| State | Published - 1 Feb 2019 |
Keywords
- Heat treatment
- Laser additive manufacturing
- Microhardness
- Microstructure
- Ti-6Al-6Mo