贫铀靶高速冲击下宏观损伤及其微观变形机制研究

来源 :2018第十二届全国爆炸力学学术会议 | 被引量 : 0次 | 上传用户:tiny
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  文中研究了贫铀靶板/钢弹碰撞副在10~90 m/s冲击速度下的宏观损伤行为及其微观变形机制。结果 表明:贫铀靶板/钢弹碰撞副在不同撞击速度范围内形成了球冠状弹坑;随着撞击速度增加,弹坑直径和深度线性增加;显微组织观察表明孪晶是贫铀靶板冲击载荷下塑性变形的主要方式,变形孪晶以130}和{172}孪晶为主;随着冲击速度的增加,弹坑底部孪晶分布有展宽的趋势;显微硬度测试表明,弹坑附近显微硬度值与弹坑底部变形组织分布的特点密切相关。
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