高速冲击载荷下预压缩<strong>AZ31</strong>镁合金的退孪生行为与动态力学性能

高速冲击载荷下预压缩AZ31镁合金的退孪生行为与动态力学性能

陈扬, 毛萍莉, 刘正, 王志, 曹耕晟

Detwinning Behaviors and Dynamic Mechanical Properties of Precompressed AZ31 Magnesium Alloy Subjected to High Strain Rates Impact

CHEN Yang, MAO Pingli, LIU Zheng, WANG Zhi, CAO Gengsheng

表1 原始试样与预压缩AZ31镁合金试样沿ND在不同应变速率下冲击的屈服应力与峰值应力 (MPa)

Table 1 Yield stress and peak stress of the as-received and precompressed AZ31 magnesium alloy specimen impacted along ND under different strain rates

Specimen	$\dot{ε}$ = 700 s^-1		$\dot{ε}$ = 1000 s^-1		$\dot{ε}$ = 1300 s^-1		$\dot{ε}$ = 1600 s^-1
	σ_s	σ_p	σ_s	σ_p	σ_s	σ_p	σ_s	σ_p
As-received	113.2	345.6	128.9	419.7	135.4	458.6	144.5	498.1
Precompressed	98.7	228.1	102.5	348.8	107.3	415.2	112.2	488.8