刘东雨,李文杰,韩钰,高倩,刘静静,侯世香,李宝让,陈新,祝志祥,卢云深,马光

• 1:华北电力大学能源动力与机械工程学院
• 2:国家火力发电工程技术研究中心
• 3:国网智能电网研究院电工新材料及微电子研究所

摘要(Abstract)：

耐热铝合金导线的耐热机理是采用微合金化元素提高铝基体的再结晶温度。提高耐热铝合金导线电导率的措施是优选微合金元素和工业纯铝,降低微合金元素和杂质元素对铝基体导电性的影响。在分析Zr、Er、Y等微合金元素对铝导体再结晶温度和导电性影响的基础上设计出了Al-Er-Y和Al-Er-Y-B系耐热铝合金导体材料。采用优选Al99.70重熔用铝锭和Al-Er、AlY、Al-B中间合金制备了Al-Er-Y-(B)耐热铝合金导线。结果表明,Al-0.1~0.2Er-0.1~0.2Y-0~0.03B合金导线的抗拉强度≥160 MPa、伸长率(200 mm标距)≥2%、导电率(20℃)≥61%IACS、230℃退火1 h后的强度残存率≥90%。

关键词(KeyWords)： 导体材料;铝合金;合金设计;稀土元素;架空线路

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(2012-323)

作者(Author): 刘东雨,李文杰,韩钰,高倩,刘静静,侯世香,李宝让,陈新,祝志祥,卢云深,马光

DOI: 10.13289/j.issn.1009-6264.2014.s1.004

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