中南大学学报（自然科学版）2012，Vol.43Issue(5)：1672-1677,6.
TiC颗粒增强钛基复合材料的热变形行为及加工图
Hot deformation and processing map of titanium matrix composites reinforced by TiC particulates
摘要
Abstract
The deformation behaviour of in-situ synthesized titanium matrix composites reinforced by TiC particulates was investigated by compression tests on Gleeble-1500 thermal simulator machine. The tests were performed in the temperature range from 700 to 950 ℃ and strain rate range from 0.001 to 1 s-1. The results show that the flow stress is controlled by strain rate and deformation temperature. The flow stress increases with the increase of strain rate and decreases with the increase of deformation temperature. The deformation activation energy is 357.09 kJ/mol in (α+β) phase region and 227.18 kJ/mol in β phase region. The constitutive equation of the plastic deformation is obtained by introducing Zener-Hollomon parameter. The processing maps of in-situ synthesized titanium matrix composites are also established based on the dynamic material model and the flow instability region is noted.关键词
流变应力/加工图/原位生成复合材料/钛基复合材料/热变形Key words
flow stress/ processing map/ in-situ synthesized composite/ titanium matrix composites/ hot deformation分类
矿业与冶金引用本文复制引用
胡加瑞,肖来荣,蔡一湘,李威,罗锴,刘彦..TiC颗粒增强钛基复合材料的热变形行为及加工图[J].中南大学学报（自然科学版）,2012,43(5):1672-1677,6.基金项目
国家支撑计划资助项目(2009BAE71B0) （2009BAE71B0）
