连续铸造铜单晶的力学性能和电阻率

来源期刊：中国有色金属学报1999年第3期

论文作者：许振明 李建国 李金山 傅恒志

文章页码：577 - 581

关键词：连续铸造； 铜单晶； 力学性能； 电阻率

Key words：continuous casting；single-crystal copper；mechanical properties；electrical resistivity

摘    要：采用自制水平单晶连铸设备制备铜单晶，并对铜单晶的力学性能和电阻率进行了测试分析。结果表明，铜单晶与多晶铸棒比，抗拉强度降低20.85%，屈服强度降低86.54%，延伸率增加80.24%，断面收缩率增加39 4.50%；与轧制棒比，抗拉强度降低65.97%，屈服强度降低98.27%，延伸率增加270.0 0%，断面收缩率增加4.00 %；与多晶铸棒比电阻率降低15.57%, 与定向凝固铸棒比电阻率降低4.24%。因此，连铸铜单晶具有非常优异的塑性加工性能和低电阻率。

Abstract: The single-crystal copper is casted by self-made horizontal continuous casting equipment. The mechanical properties and resistivity of the single-crystal copper were studied. It was shown that the tensile strength and the yield strength of the continuous casting single-crystal copper rod decrease 20.85% and 86.54%, respectively, while the elongation and the reduction of cross-section area increase 80.24% and 394.50%, respectively, than those of the polycrystal copper rod. Compared with the rolling polycrystal copper, the tensile strength and the yield strength of the continuous casting single-crystal copper rod decrease 65.97% and 98.27%, respectively, while the elongation and the reduction of cross-section area increase 270.00% and 4.00%, respectively. The resistivity of single-crystal copper rod are 15.57% and 4.24%, respectively, which are lower than those of polycrystal and unidirectionally solidified polycrystal copper rods. The continuous casting single crystal copper rod have excellent properties for cold working and lower resistivity.