微量Zr、Er对导线用耐热铝合金性能的影响

Effects of trace elements Zr and Er on heat-resistance of aluminum alloy wires

耐热铝合金导线是解决大容量输电的重要手段。研究了Zr和Er对耐热铝合金导电性、抗拉强度及耐热性的影响。结果表明,Zr含量在0.04%～0.1%范围变化时,耐热铝合金单丝的导电率逐渐降低,抗拉强度与耐热性均先升高后降低,Zr为0.08%时达到峰值;随着Er在0.03%～0.1%范围变化时,合金的抗拉强度和耐热性提高,而导电率先升高后降低,在Er为0.08%时达到峰值。

Heat-resistant aluminium alloys is an important measure to solve the problem of large capacity transmission. The effects of Zr and Er on conductivity,tensile strength,heat resistance of heat-resistance aluminum alloy were studied. The results show that the conductivity of heat resistant aluminium alloy drops down gradually,and the tensile strength and heat resistance increase firstly and then decrease while Zr contents increased in the range of 0. 04%-0. 1%. The tensile strength and heat resistance reach the peak value at Zr content of 0. 08%. The tensile strength and heat resistance of the alloy increase and the conductivity increases firstly and then decreases while Er contents increased in the range of 0. 03%-0. 1%. The conductivity reaches the peak when the content of Er content is 0. 08%.