Subtransus Deformation Behavior of a Titanium Alloy with Lamellar Structure

摘要：

The subtransus deformation behavior of TC11 alloy is analyzed based on deformation mechanisms. Isothermal compression tests are applied a temperature range of 890-995℃ and a strain rate range of 0.01-10 s-1. The flow stress curves show that the flow stress increases with decreasing temperature and increasing strain rate; with increasing strain, the flow stress shows characteristic including quick hardening and moderate softening. The flow softening can be related to reduction of Hall-Petch strengthening effects due to transfer from the hard slip mode to the soft one. Finally a new constitutive equation was established for large strain subtransius deformation of TC11 alloy by combining the Estrin and Mecking hardening model and an empirical flow softening model.

关键词： Titanium alloy lamellar flow softening constitutive equation

作者: Song Hongwu Zhang Shihong Cheng Ming Li Zhenxi Cao Chunxiao

作者单位: Institute of Metal Research,Chinese Academy of sciences,Shenyang 110016,China Beijing Institute of Aeronautical Materials,Beijing 100095,China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 214-218

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）