[1]赵一帆１,２,３,等.工艺参数对镁/钢搅拌摩擦搭接焊组织与性能的影响[J].湖北工业大学学报,2024,39(2):23-28,33.
　ZHAO Yifan,HU Xinbin,SHEN Xiaokun.Effect of Process Parameters on the Microstructure and Mechanical Properties of MagnesiumSteel Joint by Friction Stir Lap Welding[J].,2024,39(2):23-28,33.
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工艺参数对镁/钢搅拌摩擦搭接焊组织与性能的影响()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
39
期数:
2024年第2期
页码:
23-28,33
栏目:
出版日期:
2024-04-20

文章信息/Info

Title:
Effect of Process Parameters on the Microstructure and Mechanical Properties of MagnesiumSteel Joint by Friction Stir Lap Welding
文章编号:
1003-4684(2024)02-0023-06
作者:
赵一帆１; ２; ３; 胡心彬１; ２; ３; 沈小琨１; ２; ３
１ 湖北工业大学材料与化学工程学院,湖北 武汉 ４３００６８;２ 绿色轻工材料湖北省重点实验室,湖北 武汉 ４３００６８;３ 车用轻质材料与加工湖北省工程实验室,湖北 武汉 ４３００６８
Author(s):
ZHAO Yifan1; 2; 3;  HU Xinbin1; 2; 3 ;  SHEN Xiaokun1; 2; 3
1 School of Materials and Chemical Engineering， Hubei Univ. of Tech., Wuhan 430068,China; 2 Hubei Provincial Key Laboratory of Green Materials for Light Industry,Wuhan 430068,China;3 Hubei Engin. Laboratory of Automotive Lightweight Materials and Processing, Wuhan 430068,China
关键词:
镁合金; 高强钢; 搅拌摩擦搭接焊; 接头性能
Keywords:
magnesium alloy;  high strength steel;  friction stir lap welding;  joint performance
分类号:
TG40
文献标志码:
A
摘要:
对２．５mm 厚的 AZ３１B镁合金和２mm 厚的 DP６００高强钢平板进行搅拌摩擦搭接焊连接实验.通过金相显微镜(OM)、扫描电子显微镜(SEM)、射线衍射仪(XRD)、拉伸实验和硬度测试,研究工艺参数对镁/钢搭接接头显微组织、连接机理和力学性能影响.结果表明:镁/钢接头连接机制为机械结合,且随着焊接进给速度增大,接头拉伸性能降低;随着旋转速度增大,接头拉伸性能先增强再降低.在进给速度８０mm/min,旋转速度９００r/min时达到最大剪切破坏载荷为２９５．８N/mm.界面处晶粒细化显著,硬度明显高于母材.
Abstract:
The dissimilar metals of 2.5 mm AZ31B magnesium alloy and 2 mm DP600 high strength steel were welded by friction stir lap welding. The effects of process parameters on the microstructure, binding mechanism and mechanical properties of magnesium/steel lap joints were investigated by OM, SEM, XRD, tensile test and hardness test. The results show that the connection mechanism of magnesium/steel joints was mechanical bonding. The tensile properties of the joints decreased when the welding feed rate increased; The tensile properties of the joints first increased and then decreased when the rotation speed increased. The maximum shear failure load of 295.8 N/mm was reached at the feed speed of 80 mm/min and the rotation speed of 900 r/min. The grain refinement at the interface was significant, and the hardness is significantly higher than that of the base metal.

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备注/Memo

备注/Memo:
[收稿日期]２０２２--０４- １２[基金项目]中央引导地方科技发展专项(２０１９ZYYD０１５)[第一作者]赵一帆(１９９７－),男,湖北武汉人,湖北工业大学硕士研究生,研究方向为镁/钢搅拌摩擦焊连接.[通信作者]胡心彬(１９７０－),男,湖北监利人,湖北工业大学教授,研究方向为车用轻质材料连接.
更新日期/Last Update: 2024-05-07