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

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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2 应变速率为700和1600 s^-1时原始试样与预压缩试样沿ND冲击的应变速率敏感指数

Table 2 Strain rate sensitivity indexs of the as-received and precompressed AZ31 magnesium alloy specimen impacted along ND under different true strains (ε) at

${\dot{ε}}_{1}$

= 700 s^-1,

${\dot{ε}}_{2}$

= 1600 s^-1

Specimen	$ε$ = 0.005	$ε$ = 0.01	$ε$ = 0.025	$ε$ = 0.05	$\bar{m}$
As-received	0.227	0.269	0.232	0.166	0.224
Precompressed	0.301	0.179	0.295	0.438	0.303