罗传红,彭卫平,张建强,郭立杰,董丰波

• 1:武汉大学动力与机械学院
• 2:上海航天设备制造总厂

摘要(Abstract)：

采用搅拌摩擦焊方法对2219-T6铝合金进行焊接,对焊接接头的宏观形貌、显微组织、拉伸强度、显微硬度进行了分析。结果表明,焊核区组织为细小的晶粒,热机影响区组织为弯曲变形的晶粒,热影响区组织出现了明显粗化。接头室温拉伸强度可以达到母材的75%左右,接头强度低于母材的原因主要归结为金属的塑性损伤、缺陷的产生和热影响区的软化。通过固溶及时效方法并兼顾再结晶过程的热处理工艺可以回复接头塑性、消除软化,达到改善接头性能的目的。

关键词(KeyWords)： 2219铝合金;搅拌摩擦焊;力学性能;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划项目(2012BAF01B07)

作者(Author): 罗传红,彭卫平,张建强,郭立杰,董丰波

DOI: 10.13289/j.issn.1009-6264.2015.03.007

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