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利用Instron电子拉伸机和Split-Hopkinson压杆(SHPB)实验装置,研究了准静态和动态压缩条件下冷轧和退火Cu板法向、轧向、横向的力学性能.不同应变率下的应力-应变曲线表明:冷轧和退火Cu板的流变应力均随应变率的增加而增加,表现出明显的应变率强化效应.冷轧Cu板准静态和动态压缩力学性能均呈现明显的各向异性:横向屈服强度最大,轧向最小,且低应变程度下的流变应力也具有同样规律.退火Cu板呈现近似各向同性.考虑准静态和动态变形时可能的塑性变形机制,基于微观晶体塑性变形理论的Taylor模型可定性地解释冷轧Cu板压缩力学性能的各向异性.

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