张桂源,郄新哲,宫文彪,宫明月,崔恒

• 1:长春工业大学教育部先进结构材料重点实验室
• 2:长春轨道客车股份有限公司

摘要(Abstract)：

对2.5 mm厚6005A-T6铝合金与3 mm厚S420MC钢板进行搅拌摩擦焊搭接焊接,采用扫描电镜、X射线衍射(XRD)和显微硬度计研究焊缝界面形貌、微观组织结构和力学性能。结果表明:钢/铝搅拌焊的界面处形成了搅拌焊特有的飞边结构,焊核区钢/铝呈层状组织结构,有金属间化合物Al Fe、AlFe_3和Al_(13)Fe_4的形成;界面结合为机械+冶金结合,平均拉剪载荷为5.024 k N;铝侧拉伸断口为韧性断裂,钢侧为韧—脆混合型断裂;界面处的显微硬度达393 HV,远高于母材金属;搅拌头的磨损率为1.18 mm/m。

关键词(KeyWords)： 低碳钢;铝合金;异种金属搅拌摩擦焊;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 吉林省科技攻关项目(20140204070GX);; 长春市科技局“双十工程”项目(17SS024)

作者(Author): 张桂源,郄新哲,宫文彪,宫明月,崔恒

DOI: 10.13289/j.issn.1009-6264.2017-0565

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