杨晶,张文达,郑铠东,党惊知,徐宏

• 1:中北大学材料科学与工程学院

摘要(Abstract)：

采用力学性能测试仪、光学显微镜、扫描电镜研究了深冷处理时间对A319合金显微组织和力学性能影响。结果表明,随着深冷处理时间的延长,A319合金室温拉伸强度和伸长率先增大后降低,在24 h时达到最大值,比常规热处理试样力学性能分别提高6%,42%。这主要是因为深冷处理对合金有预时效作用,随着深冷时间的延长,富铁相钝化,且大部分成细小的颗粒状,均匀分布在共晶区,大大减小了对材料性能的危害,有利于力学性能的改善。

关键词(KeyWords)： 深冷处理;显微组织;力学性能;A319合金

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨晶,张文达,郑铠东,党惊知,徐宏

DOI: 10.13289/j.issn.1009-6264.2014.s1.033

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