贵星卉,孙大翔,叶凌英,赵丕植

• 1:中铝材料应用研究院有限公司苏州分公司
• 2:广东省工业分析检测中心
• 3:中南大学材料科学与工程学院
• 4:中铝材料应用研究院有限公司

摘要(Abstract)：

通过常温拉伸实验、慢应变拉伸应力腐蚀实验、极化曲线测试及透射电镜等研究了不同时效工艺对2519A合金的力学性能和抗应力腐蚀开裂性能的影响。结果表明:与传统的2519A-T87合金相比,再时效时间为19 h的2519A-T9I7合金同时具有优异的力学性能和良好的抗应力腐蚀开裂性能。这是由于2519A-T9I7合金在T9I6态的基础上延长了再时效时间,使晶界析出相聚集球化,相间距增加,破坏了腐蚀通路,提高了抗应力腐蚀开裂性能。

关键词(KeyWords)： 2519A铝合金;力学性能;抗应力腐蚀开裂;晶界析出相

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 贵星卉,孙大翔,叶凌英,赵丕植

DOI: 10.13289/j.issn.1009-6264.2020-0340

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