变形及热处理后CuCr25触头材料的性能研究Research on properties of CuCr25 contact materials after deformation and heat treatment
田保红,朱建娟,刘平,任凤章,刘勇,贾淑果
摘要(Abstract):
本文在中频感应炉中采用大气熔铸方法制备了CuCr25合金触头材料,探讨了时效以及变形对导电率和显微硬度的影响,并测定了该合金的抗软化温度。结果表明:在950℃×1h固溶后,经440℃时效6 h可获得较高的导电率和显微硬度;固溶后经40%变形在440℃时效2 h后,导电率和显微硬度分别可达57%IACS和174 HV,比固溶后直接时效分别高出10%IACS和27 HV;并测得合金的抗软化温度约为55℃。
关键词(KeyWords): 固溶;时效;导电率;显微硬度;抗软化温度
基金项目(Foundation): 国家自然科学基金(50571035)
作者(Author): 田保红,朱建娟,刘平,任凤章,刘勇,贾淑果
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