Hot deformation behavior and microstructure evolution of titanium alloy Ti-Al-Zr-Sn-Mo-Si-Y
Samples of Ti-Al-Zr-Sn-Mo-Si-Y alloy were compressed on the Gleeble-1500 heat stimulation machine.The compression test was carried out in the temperature range from 800 ℃ to 1 100 ℃ and strain rate range from 0.001 s.1 to 10 s.1.Stress-strain behavior and variation of microstructure of the alloy during hot compression were investigated.The experimental results show that the alloy is sensitive to temperature and strain rate,and the flow softening behavior is more obvious with the decrease of deformation temperature.At higher strain rate,discontinuous yielding is observed in β phase region.When deformed in α+β phase region,with the increment of deformation temperature,the lamellar α structures globularization is more quick and more uniform.When deformed in β phase region,coarse β grains can be got because of high deformation temperature.
Ti-Al-Zr-Sn-Mo-Si-Y alloy high temperature titanium alloy hot deformation microstructure
QI Yun-lian XI Zheng-ping ZHAO Yong-qing WANG Rui-ning DU Yu LUO Yuan-yuan ZENG Wei-dong
Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China;School of Materials Science and Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an 710072,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）