丁宗富1, 劉廣林2, 封存利2, 楊新山2
(1. 甘肅理工大學(xué) 甘肅省有色金屬新材料省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室,
蘭州 730050;
2. 焦作市森格高新材料有限責(zé)任公司, 焦作 454001)
摘 要: 利用自制的熱型連鑄設(shè)備生產(chǎn)了單晶銅棒材， 對(duì)其鑄態(tài)、 冷加工態(tài)、 退火態(tài)的力學(xué)性能與電學(xué)性能進(jìn)行了系統(tǒng)的測(cè)試與研究。 結(jié)果表明：和多晶銅相比，單晶銅在鑄態(tài)時(shí)具有良好的塑性和較低的電阻率， 并具有優(yōu)異的室溫延展性， 其延伸率可達(dá)6100%以上； 冷拉拔加工后單晶銅表現(xiàn)出更大的加工硬化現(xiàn)象, 但采用合理的退火工藝可使其加工硬化得到緩解。
關(guān)鍵字: 熱型連鑄; 單晶銅; 延展性; 電阻率
KOU Sheng-zhong1, LAN Ye-feng1, DING Zong-fu1,
LIU Guang-lin2
（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
