(1. 甘肃理工大学 甘肃省有色金属新材料省部共建国家重点实验室,
兰州 730050;
2. 焦作市森格高新材料有限责任公司, 焦作 454001)
摘 要: 利用自制的热型连铸设备生产了单晶铜棒材， 对其铸态、 冷加工态、 退火态的力学性能与电学性能进行了系统的测试与研究。 结果表明：和多晶铜相比，单晶铜在铸态时具有良好的塑性和较低的电阻率， 并具有优异的室温延展性， 其延伸率可达6100%以上； 冷拉拔加工后单晶铜表现出更大的加工硬化现象, 但采用合理的退火工艺可使其加工硬化得到缓解。
关键字: 热型连铸; 单晶铜; 延展性; 电阻率
（1. State Key Laboratory on Advanced Nonferrous Materials,
Lanzhou University of Technology, Lanzhou 730050, China;
2. Jiaozuo Senge High Performance Materials Ltd Co, Jiaozuo 454001, China）
Abstract:The mechanical and electrical properties of as-cast, as-drawing and as-annealing single crystal copper prepared with self-made heated mould continious casting apparatus were studied. Compared with polycrystalline Cu, the as-cast single crystal copper shows better plasticity and extensibility, and has a lower electricity resistance. Its elongation of cold rolling can reach 6100% without any cracks in the edges. The single crystal copper exhibits more serious work hardening in wiredrawing. The plasticity and electricity resistance of as-drawing single crystal copper can be resumed after being annealed.
Key words: heated mold continuous casting; single crystal copper; extensibility; electric resistivity
