Hot deformation and processing maps of titanium matrix composite

摘要：

The hot deformation characteristics of TiC particles reinforced titanium matrix composite were studied in the temperature range from 900 ℃ to 1 150 ℃ and in the strain rate range of 10.3.10 s.1 by compression tests with Gleeble1500 simulator system.The flow behavior was described by the hyperbolic sine constitutive equation,and an average activation energy of 436.72 kJ/mol was calculated.The processing maps were calculated and analyzed according to the dynamic materials model.The maps show domains in some combinations of temperatures and strain rates and these domains are correlated with specific microstructural processes occurring during hot deformation by metallographic investigations and kinetic analysis.At the low strain rate domain occurs in the temperature range of 900.960 ℃ and strain rate range of 0.001.0.03 s.1 superplasticity and dynamic recrystallization were observed.At a high strain rate domain occurs in the temperature range of 980.1 120 ℃ and strain rate range of 0.1.10 s.1 the β phase undergoes dynamic recrystallization.Also,at a strain rate range of 0.1.10 s.1 and the temperature range of 900.930 ℃,the material exhibits flow localization.

关键词： titanium matrix composite hot deformation processing map

作者: WANG Rui-ning XI Zheng-ping ZHAO Yong-qing QI Yun-lian

作者单位: 1. School of Materials Science and Engineering,Xi’an University of Architectural and Technology,Xi’a Titanium Research Center,Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）