摘要
The superplasticity of fine-grained Ti-6Al-4V wide sheet was investigated by constant strain rate tensile method. The superplastic tensile tests were carried out at temperatures ranging from 1103 K to 1223 K and strain rates ranging from 3.2×10-4 s-1 to 1×10-2 s-1. The results show that tensile elongation to failure values between 100% and 604% are obtained. Microstructure evolution and deformation mechanism were analyzed. Results show that the main deformation mechanism is grain boundary sliding, accommodated by matrix dislocation movement and the intragranular slip of β phase. It is also found that the Ti-6Al-4V wide sheet shows anisotropy when deformed at lower temperatures, which is obviously reduced when deformed at higher temperatures.
| 投稿的翻译标题 | 细晶Ti-6Al-4V宽幅板材的超塑性变形机理及组织演变 |
|---|---|
| 源语言 | 英语 |
| 页（从-至） | 391-397 |
| 页数 | 7 |
| 期刊 | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| 卷 | 49 |
| 期 | 2 |
| 出版状态 | 已出版 - 1 2月 2020 |