Transactions of Materials and Heat Treatment

Title：Characteristics of hot deformation behavior and microstructure of Ti-6Al-2Sn-4Zr alloy

Authors： YU Jian-min ZHANG Zhi-min ZHANG Hui-fang WANG Qiang

Unit： North University of China

KeyWords： near αtitanium alloys plastic deformation microstructure strain rate

ClassificationCode：TG146

year,vol(issue):pagenumber：2011,36(4):122-126

Abstract：

The high temperature plastic deformation of a new type titanium alloy Ti-6Al-2Sn-4Cr was studied by high temperature compression test on Gleeble3800 thermalmechanical simulator,and the metallography microstructure of the alloy was investigated by digital microscope. Through the research,the law of the deformation condition on mechanical properties and microstructure were obtained.The results show that flow stress increases rapidly and then decreases gently under the phase transition temperature,then it tends to stable. As above, the phase transition temperature, in the high strain rate, stress discontinuous yield phenomenon is observed. The deformation increases with the strain rate increasing, and the grains of dynamic recrystallization are refinement.

Funds：

山西省基础研究计划资助项目（2008021030）

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