反应堆耐压壳体用Ti-5Al-3V-3Zr-0.7Cr合金的热变形行为

Bin Zhao, Yongqing Zhao, Zhimin Hou, Yuanyuan Luo, Wen Zhang, Pingxiang Zhang, Jinping Wu

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

The isothermal hot compression experiment of Ti-5Al-3V-3Zr-0.7Cr alloy melted by VAR melting three times was performed by Gleeble-3800 thermo-simulation machine. High-temperature deformation and recrystallization behaviors of the as-cast alloy were studied over a wide range of strain rate (0.001 to 1.0 s-1) and temperature (750 to 900℃). The results show that the flow curves for the current alloy firstly exhibits sharp peaks at low strain levels revealing pronounced work hardening, and then drops rapidly after peak stress presenting the soft characteristics. The flow stress decreases with decreasing the strain rate or increasing the temperature. Dynamic recrystallization (DRX) is the major softening mechanism. The relationship between the critical strain and the peak strain of DRX is linear. Based on the conventional recrystallized fraction curves, the recrystallized volume fraction grows as an "S" shape with the increasing the deformation temperature and the true strain. Processing maps were established under different deformation conditions, and the optimal condition for hot work on this material was determined to be 750℃/0.001~0.01 s-1 and 850~900℃/0.01~0.1 s-1.

投稿的翻译标题Hot Deformation Behavior of Ti-5Al-3V-3Zr-0.7Cr Titanium Alloy as a Candidate Material for Pressure Hull of Fusion Reactor
源语言繁体中文
页(从-至)1872-1877
页数6
期刊Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
48
6
出版状态已出版 - 1 6月 2019
已对外发布

关键词

  • Dynamic recrystallization characteristics
  • Hot deformation behavior
  • Processing map
  • Titanium alloy

指纹

探究 '反应堆耐压壳体用Ti-5Al-3V-3Zr-0.7Cr合金的热变形行为' 的科研主题。它们共同构成独一无二的指纹。

引用此