| 附加超声对6061-T6铝合金/Q235钢搅拌摩擦焊搭接工艺优化 |
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| 引用本文： | 刘涛,高嵩,肖光春,吴程浩,石磊,孙志平.附加超声对6061-T6铝合金/Q235钢搅拌摩擦焊搭接工艺优化[J].焊接学报,2022,43(5):69-75. |
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| 作者姓名： | 刘涛 高嵩 肖光春 吴程浩 石磊 孙志平 |
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| 作者单位： | 1.齐鲁工业大学(山东省科学院), 济南, 250353 |
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| 基金项目： | 山东省自然科学基金(ZR2020QE177,ZR2021ME250)； |
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| 摘 要： | 采用超声振动强化搅拌摩擦焊接工艺实现了6061-T6铝合金和Q235钢异种金属的有效连接,考察了超声能量对焊缝成形、接头组织、力学性能以及焊接载荷的影响.结果表明,施加超声能量可以显著改善焊缝表面成形,增加铝/钢界面区和焊核区的宽度.超声振动细化了焊核区和热力影响区的晶粒组织,改变了搭接接头的断裂机制和断裂位置,提高了...
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| 关 键 词： | 搅拌摩擦焊 超声能量 铝/钢 组织与性能 焊接载荷 |
| 收稿时间： | 2022-01-01 |
Process optimization on friction stir lap welding of 6061-T6 aluminum alloy/Q235 steel with ultrasonic vibration |
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| Affiliation: | 1.Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China2.Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), Shandong University, Jinan, 250061, China |
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| Abstract: | The effective connection between 6061-T6 aluminum alloy and Q235 steel was realized by ultrasonic vibration enhanced friction stir welding (UVeFSW) process. The effects of ultrasonic energy on weld formation, joint microstructure, mechanical properties and welding load were investigated. The results show that the application of ultrasonic energy can significantly improve the weld surface forming and expand the width of aluminum / steel interface zone and weld nugget zone. Ultrasonic energy refines the grain structure of weld nugget zone and thermal mechanically affected zone, changes the fracture mechanism and cracking location of lap joint, improves the mechanical properties of joint. The variation of welding loading during welding was analyzed. It is found that the tool torque, the welding axial force and the spindle power decrease after applying ultrasonic energy. |
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