摘要
The hot deformation behavior of Ti-25Al-14Nb-2Mo-1Fe alloy was investigated at deformation temperatures 950-1100℃ with strain rate 0.001-1 s-1, and the height reduction of 50% by using isothermal simulative compression testing. The results show that the flow stress of the alloy is sensitive to the hot working parameters, such as deformation temperature and strain rate. The true stress-true strain curves exhibit a peak flow stress, flow softening and steady state flow behavior. The stress exponent (n) and the apparent activation energy (Q) for hot deformation is calculated based on a hyperbolic-sine Arrhenius-type equation and multiple regression method. Constitutive equation is established for high temperature deformation of the alloy.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 146-151 |
| 页数 | 6 |
| 期刊 | Jinshu Rechuli/Heat Treatment of Metals |
| 卷 | 40 |
| 期 | 1 |
| DOI | |
| 出版状态 | 已出版 - 25 1月 2015 |