锻压技术

不同变形量对Cu-2Ag合金组织和性能的影响

英文标题：Influence of different deformation amounts on microstructure and properties of Cu-2Ag alloy

单位：1.河南科技大学材料科学与工程学院 2.河南省有色金属材料科学与加工技术重点实验室

分类号：

出版年,卷(期):页码：2022,47(3):206-210

摘要：

总变形量一定的前提下，采用不同道次、不同变形量对Cu-2Ag合金棒材进行轧制变形，研究了不同变形工艺对Cu-2Ag合金微观组织结构和导电性能、力学性能的影响。结果表明，总变形量一定时，各道次变形量的分配对合金性能的影响不同，导电率和硬度分别为：工艺1，82.75%IACS、170.34 HV；工艺2，83.62%IACS、174.82 HV；工艺3，82.72%IACS、180.26 HV。实验条件下，第1道次轧制变形量越大（60%），合金的综合性能更优。轧制前合金的微观组织以交错分布的网状枝晶形态为主；轧制变形后，枝晶出现不同程度的变形，这是导致合金性能不同的主要原因。平行于轧制方向的微观组织以连续排列的“鱼骨”状枝晶形态为主；轧制变形后，枝晶间距增加。试验范围内，采用工艺3变形后，合金的硬导积达到0.989，综合性能较好。

When the total deformation was constant, Cu-2Ag alloy bars were rolled and deformed by different passes and different deformation amounts, and the influences of different deformation processes on the microstructure, electrical conductivity and mechanical properties of Cu-2Ag alloy were studied. The results show that the distribution of deformation amount in each pass has different effects on the properties of the alloy when the total deformation is constant. The results of conducivity and hardness are as follows: Process 1，82.75% IACS, 170.34 HV; Process 2，83.62% IACS, 174.82 HV; Process 3，82.72% IACS, 180.26 HV. Under the experimental conditions, the larger the rolling deformation (60%) of the first pass is, the better the comprehensive properties of the alloy are. The microstructure of the alloy before rolling is dominated by staggered network dendrites, and after rolling deformation, the dendrites are deformed to different degrees, which is the main reason for the different properties of the alloy. However, the microstructure parallel to the rolling direction is dominated by continuously arranged “fishbone” dendrites, and after rolling deformation, the dendrite spacing increases. Within the test range, after the deformation of Process 3, the hard conductivity of the alloy reaches 0.989, and its comprehensive properties are good.

基金项目：

河南省重大科技专项（创新引领专项）（191110210400）

周菲（1998-），女，硕士研究生 E-mail：zhoufei_0526@163.com 通信作者：张彦敏（1970-），女，博士，教授 E-mail：zhangmin70@163.com

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