变形量对铜包铝复合扁线轧制变形的数值模拟与实验研究  

Numerical Simulation and Experimental Investigation on Rolling Deformation Strain of Copper Cladding Aluminum Flat Wires

作　　者：罗奕兵[1] 戴晓元[1] 张健[1] 

机构地区：[1]长沙理工大学汽车与机械工程学院,工程车辆轻量化与可靠性技术湖南省高校重点实验室,长沙410004

出　　处：《材料导报》2014年第8期157-159,共3页Materials Reports

基　　金：长沙市科技计划(K1303003-11);工程车辆轻量化与可靠性技术湖南省高校重点实验室开放基金

摘　　要：采用刚塑性有限元法,研究了变形量对铜包铝复合棒材由圆断面到扁平断面的轧制变形行为的影响,并对模拟结果进行了实验验证。结果表明:铜包铝棒材平辊轧制的宽展率和延伸率与压下率之间存在较为明显的线性关系;随压下率的增加,宽展指数先增大后减小,在压下率为40%时达到最大,为1.9;在后续轧制道次中,扁形断面铜包铝复合材料的压下率对轧制延伸变形的影响比宽展变形更显著;有限元计算结果与实验结果具有较好的一致性。The deformation of copper cladding aluminum composite rod from circle cross section to flat cross section rolling process was investigated by rigid plastic finite element.Effect of strain on the deformation was analyzed combining with experiments.The results show that there is a linear relation between the reduction ratio and spread ratio,so the elongation ratio is.Spread exponent firstly increases and then decreases as reduction ratio increases.When reduction ratio is 40％,the spread exponent is 1.9 at the most.During the lateral passes of flat cross section composite,effect of reduction ratio on extension is more significant than spread deformation.Reasonable agreement of the FEM predictions and the experimental results is obtained.

关 键 词：铜包铝 扁线 平辊轧制 数值模拟 

分 类 号：TG335.8[金属学及工艺—金属压力加工]