Texture evolution and its simulation of cold drawing copper wires produced by continuous casting  

连续铸造铜线材冷拔形变织构的演化及计算机模拟(英文)

作　　者：陈建[1,2] 严文[1,2] 李巍 苗健[4] 范新会[2] 

机构地区：[1]西北工业大学应用物理系,西安710072 [2]西安工业大学材料与化工学院,西安710032 [3]宝鸡钛业有限公司,宝鸡721014 [4]安交通大学材料科学与工程学院,西安710049

出　　处：《Transactions of Nonferrous Metals Society of China》2011年第1期152-158,共7页中国有色金属学报（英文版）

基　　金：Projects(50771076,50901055)supported by the National Natural Science Foundation of China;Project(07JK274)supported by the Education Department Foundation of Shaanxi Province,China

摘　　要：The texture evolution of cold drawing copper wires produced by continuous casting was measured by X-ray diffractometry and electron back-scatter diffractometry,and was simulated using Taylor model.The results show that in the drawn poly-crystal copper wires produced by traditional continuous casting,111 and 100 duplex fiber texture forms,and with increasing strain,the intensities of 111 and 100 increase.In the drawn single-crystal copper wires produced by Ohno continuous casting,100 rotates to 111,and there is inhomogeneous distribution of fiber texture along radial direction of the wires,which is caused by the distribution of shear deformation.Compared with 100,111 fiber texture is more stable in the drawn copper wires.Comparison of the experimental results with the simulated results shows that the simulation by Taylor model can analyze the texture evolution of drawn copper wires.采用X射线衍射以及电子背散射衍射技术分析连续铸造技术制备的铜线材冷拔形变织构的演化,并采用Taylor模型对其进行计算机模拟。结果表明,采用传统连续铸造技术制备的多晶铜线材经过冷拔变形后形成<001>+<111>丝织构,随着变形量的增加,2种织构组分的强度增加。OCC技术制备的<100>单晶铜线材,在冷拔变形过程中,部分区域的<100>会向<111>转动,并且剪切应力的不均匀分布将导致形变织构组分沿线材径向不均匀分布。在冷拔织构组分中,与<100>相比,<111>织构组分更加稳定。实验结果与模拟结果对比表明,Taylor模型能够很好地模拟铜线材冷拔形变织构的演化。

关 键 词：cold drawing copper wires TEXTURE Taylor model 

分 类 号：TG359[金属学及工艺—金属压力加工]