摘要
研究了单独添加Er以及复合添加Er+Ce对铝合金导线显微组织、力学性能和导电性能的影响。结果表明,Al-0.1Er-0.04Zr-0.02B中的第二相大多分布在晶界,且以长条状为主,第二相含量较高;Al-0.04Er-0.04Zr-0.02B中第二相明显减少,主要以断续颗粒状出现;Al-0.04Er-0.05Ce-0.04Zr-0.02B中第二相主要以颗粒状分布在晶内。3种铝合金导线的导电率从高至低顺序为Al-0.1Er-0.04Zr-0.02B>Al-0.04Er-0.05Ce-0.04Zr-0.02B>Al-0.04Er-0.04Zr-0.02B,电阻温度系数分别为4.27×10-3、4.26×10-3和4.60×10-3;Al-0.1Er-0.04Zr-0.02B和Al-0.04Er-0.05Ce-0.04Zr-0.02B的电阻温度系数低于工业纯铝,而Al-0.04Er-0.04Zr-0.02B的电阻温度系数高于工业纯铝;3种铝合金导线的强度保持率90%以上对应的最高温度为240℃,满足耐热铝合金导线的使用要求;Al-0.1Er-0.04Zr-0.02B和Al-0.04Er-0.05Ce-0.04Zr-0.02B铝合金导线的综合性能相当,且都明显高于Al-0.04Er-0.04Zr-0.02B铝合金导线。
The effects of adding Er and adding Er+Ce on the microstructure, mechanical properties and electrical properties of aluminum alloy wires were studied, the mechanism of the microalloying elements was analyzed. The results show that the second phase in the Al-0.1Er-0.04Zr-0.02B sample adding 0.1Er is mostly distributed in the grain boundary, and the content of second phase is relatively high, and the second phase of the white phase in the Al-0.04Er-0.04Zr-0.02B sample adding 0.04Er is obviously reduced and mainly in the form of intermittent granular form, while the white second phase in the Al-0.04Er-0.05Ce-0.04Zr-0.02B sample mainly occurs in granular form and mainly distributes in the crystal. The conductivity of Al-0.1Er-0.04Zr-0.02B, Al-0.04Er-0.04Zr-0.02B and Al-0.04Er-0.05Ce-0.04Zr-0.02B aluminum alloy conductors from high to low is Al-0.1Er-0.04Zr-0.02B> Al-0.04Er-0.05Ce-0.04Zr-0.02B>Al-0.04Er-0.04Zr-0.02B, and the resistance temperature coefficients of Al-0.1Er-0.04Zr-0.02B, Al-0.04Er-0.04Zr-0.02B and Al-0.04Er-0.05Ce-0.04Zr-0.02B samples are 4.27×10^-3, 4.60×10^-3 and 4.26×10^-3 respectively, and the resistance temperature coefficient of Al-0.1Er-0.04Zr-0.02B and Al-0.04Er-0.05Ce-0.04Zr-0.02B samples is lower than that of industrial pure aluminum, while the resistance temperature coefficient of Al-0.04Er-0.04Zr-0.02B samples is higher than that of industrial pure aluminum. The maximum temperature of three kinds of aluminum alloy wires above 90% is 240 ℃, which meets the requirements for the use of heat-resistant aluminum alloy wires. The comprehensive properties of Al-0.1Er-0.04Zr-0.02B and Al-0.04Er-0.05Ce-0.04Zr-0.02B aluminum alloy wires are equal, and all of alloyare obviously higher than that of Al-0.04Er-0.04Zr-0.02B luminum alloy wires.
作者
张国庆
王平
陈昊
ZHANG Guoqing;WANG Ping;CHEN Hao(Wuhu Power Supply Company,Anhui Electric Power Co.,Ltd.,Wuhu 247100,China)
出处
《铸造技术》
CAS
2018年第12期2660-2663,共4页
Foundry Technology
关键词
ER
CE
铝合金导线
组织
导电性能
Er
Ce
aluminum alloy wire
microstructure
electrical conductivity
