魏伟, 导师:陈光,王经涛,陈国良,块体超细晶铜的制备与组织性能研究 重要意义。 本文详细研究了块体超细晶 纯铜(99.98%)的制备、ECAP模具外角、变形道次及室温 轧制变形(Cold Rol ling, CR)对纯铜微观组织与力学性能的影响、变形孪晶的形成条件等,提出了用于描述超细晶材料力学行为的孪晶 复合强
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粉末轧制变形区可简单地化分为粉末供料区和压实区。
The deformation area in powder rolling can be simply divided into powder feed and compacting area.
分析了金属轧制变形的模拟过程,提出了新的形变模型(PC模型)。
The simulation process of rolling deformation in matels is analysed, and a new deformation model (PC-model) is suggested.
分析结果表明,轧制变形使板带晶粒细化,抗拉强度增加,伸长率降低;
The results show that the rolling will make the grain fine, the tensile strength increased and the prolongation rate reduced.
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