Microstructure Evolution of TiAl under Tensile Impact Loadings

摘要：

　　The microstructure evolution of TiAl intermetallics with different microstructures loaded under different strain rates and temperatures was investigated.The results showed that the deformation twinning dominated the deformation process under high strain rate,while dislocation slip was another dominating deformation mode under quasi-static loadings.The proportion of twinned grain increased with the increased strain rate.In Duplex TiAl,the plastic deformation was mainly found in equaxied grains and seldom found in lamellar grains.

关键词： TiAl intermetallics High strain rate Microstructure evolution

作者: Xiang Zan Li Ouyang Yu Wang Yuehui He Yong Liu Weidong Song

作者单位: School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China Department of Modern Mechanics, University of Science & Technology of China,Hefei 230026, China State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 1

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 14-18

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）