徐耀科,张彦敏,王震,冯江,刘飞跃,周仕康,薛向阳,马艳芳

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

通过真空熔炼的方法制备了Cu-3Ti合金,借助光学显微镜、扫描电镜、维氏硬度计、电子万能试验机和数字涡流金属电导仪等研究了不同工艺时效处理后合金的组织和性能,建立了不同时效温度下合金的析出动力学方程,绘制了其析出动力学曲线,同时计算出析出活化能为33 k J/mol。结果表明:在不同时效温度下,Cu-3Ti合金的导电率随时效时间的延长而逐渐增大,时效温度越高,导电率增加越快;随时效时间的延长,合金的硬度先增大后减小;经450℃时效1 h后,Cu-3Ti合金的综合性能最佳,其导电率、显微硬度、抗拉强度和伸长率分别为12.8%IACS、340 HV0.5、914 MPa和7.85%;在不同时效温度下,析出速率呈s型变化趋势,在时效初期,析出速率相对较慢,随着时效的进行,析出速率迅速增大,时效后期,析出速率逐渐降低。

关键词(KeyWords)： Cu-3Ti合金;力学性能;导电率;析出动力学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52373313)

作者(Author): 徐耀科,张彦敏,王震,冯江,刘飞跃,周仕康,薛向阳,马艳芳

DOI: 10.13289/j.issn.1009-6264.2024-0511

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