王文鑫,李瑞明,周庆阳,叶文涛,郑罗肖,赵瑞欣,翁瑶瑶

• 1:南京工程学院材料科学与工程学院

摘要(Abstract)：

2195合金为可热处理强化铝锂合金的代表，常作为受力结构件被广泛用于航空航天领域，研究热处理制度对其性能的影响至关重要。采用显微硬度计、扫描电镜和透射电镜研究了不同时效温度对2195合金析出强化和微观组织的影响。结果表明：固溶处理使得铝基体发生回复和再结晶，Al_2Cu初生相发生溶解；时效温度会显著影响2195合金的析出强化效果，随着时效温度的升高，合金的时效峰值硬度呈现先增加后降低的趋势；当人工时效温度为160℃时，2195合金的析出强化效果最好，峰值硬度为171.1 HV;而更高的时效温度(≥180℃)则会降低2195合金的力学性能，这是由于温度过高使得T_1相和θ′相发生粗化造成的。

关键词(KeyWords)： 2195合金;时效温度;析出强化;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上基金(52471136);; 江苏省研究生科研与实践创新计划项目(SJCX23＿1188);; 江苏省大学生创新创业训练计划项目(202411276011Z,202411276068Y)

作者(Author): 王文鑫,李瑞明,周庆阳,叶文涛,郑罗肖,赵瑞欣,翁瑶瑶

DOI: 10.13289/j.issn.1009-6264.2024-0422

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