孙跃军,仲丽,崔泽文,景艳,王雷,于慧

• 1:山东交通学院工程机械学院
• 2:长城汽车股份有限公司保定技术研发分公司
• 3:辽宁理工学院机电工程学院

摘要(Abstract)：

采用光学显微镜、场发射扫描电镜和布氏硬度计等研究了固溶处理对Al-Mg-4.5Si-4.5Zn合金微观组织及力学性能的影响。结果表明,固溶温度对Al-Mg-4.5Si-4.5Zn合金第二相形貌和数量影响较大,随着固溶温度的提高,合金中第二相数量降低,第二相形貌逐渐趋于球形;固溶温度和时间对合金的硬度值影响较大,随着固溶温度的提高,合金的硬度值逐步增大,在540℃时达到最大,随着固溶时间的延长,合金的硬度值先增加后降低,在2 h时达到最大;合金中第二相含量随着固溶时间的增加迅速降低,固溶时间超过2 h后合金中残余第二相含量保持平衡,不再发生溶解;对于Al-Mg-4.5Si-4.5Zn合金,其固溶工艺以540℃×2 h为宜。

关键词(KeyWords)： Al-Mg-4.5Si-4.5Zn合金;固溶处理;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金(ZR2020ME109);; 山东省交通强省建设科技创新项目;; 山东省重点研发计划(2019GGX102039);; 山东交通学院攀登计划重点科研创新团队项目(sdjtuc18005)

作者(Author): 孙跃军,仲丽,崔泽文,景艳,王雷,于慧

DOI: 10.13289/j.issn.1009-6264.2020-0518

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