Deformation behavior of AZ31 magnesium alloy at different strain rates and temperatures

摘要：

The deformation behavior of AZ31 was examined by compression and tension testes over a wide strain rate and temperature range,strain rate from 10.3 to 103 s.1,temperature from 300 to 623 K.Analysis of flow behavior and microstructural observations indicate that in tension tests dislocation glide is the most important deformation mechanism in the test strain rate and temperature range,while in compression tests twinning deformation mechanism is important at lower temperature when the strain rate ranges from 10.3 to 10 s.1.At 103 s.1 strain rate,dislocation glide and twinning are present at the same time.At the strain rate of 2 964 s.1,adiabatic shear band can be found easily,even at the strain rate of 1 537 s.1 adiabatic shear localization zone can be found.In adiabatic shear localization zone,there are fine recrystallization grains.But in adiabatic shear band,the grains cannot be identified by optical microscopy.

关键词： AZ31 magnesium alloy compression tension twinning adiabatic shear band

作者: TAN Cheng-wen XU Shan-na WANG Lu CHEN Zhi-yong WANG Fu-chi CAI Hong-nian MA Hong-lei

作者单位: Joint-Laboratory of Armament Materials Impact Property,Beijing Institute of Technology,Beijing 10008 Joint-Laboratory of Armament Materials Impact Property,Institute of Space Medico-Engineering,Beijing

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）