Plastic deformation mechanisms ofAZ31 magnesium alloy under high strain rate compression

• Published in: 中国有色金属学会会刊（英文版） Vol. 18; no. 5; pp. 1043 - 1046
• Main Authors: YANG Yong-biao, WANG Fu-chi, TAN Cheng-wen, WU Yuan-yuan, CAI Hong-nian
• Format: Journal Article
• Language: English
• Published: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China 2008; School of Information and Communication Engineering, North University of China, Taiyuan 030051, China%School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
• Subjects: twinning; basal slip,non basal slip; AZ31 magnesium alloy
• ISSN: 1003-6326

TG1; The twinning and slip activities of AZ31 magnesium alloy sheet at a strain rate of 1 200 s-1 were investigated. Dynamically mechanical properties of various oriented samples were measured using Split Hopkinson Pressure Bar(SHPB). Optical microscope observations reveal that the dominant deformation mechanism is twinning for 90° oriented sample, and is slip for 45° and 0° oriented samples. TEM analysis for samples at a strain of 0.3% shows that the main deformation mechanisms for 90°, 45° and 0° oriented sample are {10-12} < 10-11 > and {10-11} < 10-12 > twinning, basal slip and non basal slip, respectively. The main features of the true stress--true strain curves can be explained based on deformation mechanism analysis.