航空学报 > 1991, Vol. 12 Issue (1): 63-68

Ti-10V-2Fe-3Al合金热压流变应力的研究

彭益群, 潘雅琴   

  1. 北京航空航天大学
  • 收稿日期:1989-09-02 修回日期:1990-02-22 出版日期:1991-01-25 发布日期:1991-01-25

HOT COMPRESSIVE FLOW STRESS STUDY OF Ti-10V-2Fe-3Al ALLOY

Peng Yiqun, Pan Yaqin   

  1. Beijing University of Aeronautics and Astronautics
  • Received:1989-09-02 Revised:1990-02-22 Online:1991-01-25 Published:1991-01-25

摘要: 测试了Ti-10V-2Fe-3Al合金在β区850℃~950℃、ε=5×10~(-3)~10s~(-1)条件下的压缩真应力-真应变曲线。研究了变形组织。结果表明:在850℃~950℃、ε=10~(-1)~10s~(-1)范围内变形,动态回复是主要软化机制,其σ-ε曲线为动态回复型,变形后的组织为拉长晶粒。对所得的σ-ε曲线进行了数学分析,得出了流变应力模型。

关键词: 钛合金, 流变应力, 动态回复, 应力指数

Abstract: The compressive true stress vs.true strain curves of Ti-10V-2Fe-3Al alloy have been measured in β phase region at 850℃~950℃×10-ss-1~10s-1.The results show that the soft mechanism is mainly dynamic recovery when the specimen is deformed in the range of T = 850℃~950℃ and e = 10-1s-1~10s-1, the -e curves show the shape of the dynamic recovery and the deformed grain is lengthened. The mathematical model of flow stress has been proposed on the basis of mathematical analysis.

Key words: titanium alloy, flow stress, dynamic recovery, stress exponent.