中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 19 No. 1 February 2009 |
（1. School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710032, China;
2. Department of Applied Physics, Northwestern Polytechical University, Xi’an 710072, China）
Abstract:By using transmission electron microscopy, the microstructures of drawn industrial single crystal copper wires produced by Ohno Continuous Casting(OCC) process were analyzed. The results show that the typical microstructures in the wires mainly include extended planar dislocation boundaries, a small fraction of twins and some dislocation cells sharing boundaries parallel to drawn direction. Besides the typical microstructures, 9R structure configurations were observed in the wires. The formation of 9R polytypes may be caused by the coupled emission of Shockley dislocations from a boundary.
Key words: industrial single crystal copper wires; 9R structure; cold drawing
