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...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 and 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.展开更多
文摘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 and 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.
