侯远飞,刘崇宇,戴海桃,陈勇,徐峥峥,彭英浩

• 1:桂林理工大学材料科学与工程学院

摘要(Abstract)：

对7N01及7N01-0.25Sc合金进行搅拌摩擦加工(FSP)及固溶-时效热处理,通过时效-硬化曲线获得合金的固溶-峰值时效(T6)工艺。借助光学显微镜及透射电镜对各状态合金的微观结构进行观察。结果表明,Sc添加及FSP处理能细化7N01合金的晶粒,两种FSP样品均表现出优异的高温稳定性;T6处理可使FSP样品中细等轴晶和高密度纳米析出相共存,该结构优化了7N01合金的力学性能。T6 FSP 7N01-0.25Sc合金表现出最为优异的力学性能,其屈服强度、抗拉强度及拉伸伸长率分别为416 MPa、451 MPa和22%。

关键词(KeyWords)： 搅拌摩擦加工;热处理;钪;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51601045);; 广西八桂学者创新团队资助项目

作者(Author): 侯远飞,刘崇宇,戴海桃,陈勇,徐峥峥,彭英浩

DOI: 10.13289/j.issn.1009-6264.2019-0592

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