| 双道焊对搅拌摩擦焊搭接界面及接头性能的影响 |
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| 引用本文： | 柯黎明,魏鹏,邢丽,罗凯,栾国红.双道焊对搅拌摩擦焊搭接界面及接头性能的影响[J].焊接学报,2011,32(7):5-8. |
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| 作者姓名： | 柯黎明 魏鹏 邢丽 罗凯 栾国红 |
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| 作者单位： | 1. 南昌航空大学航空制造工程学院,南昌,330063
2. 中国航空工业集团有限公司北京航空制造工程研究所,北京,100024 |
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| 基金项目： | 国家自然科学基金资助项目，航空科学基金，江西省自然科学基金，江西省教育厅基金 |
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| 摘 要： | 用搅拌针长度为3.6 mm的圆柱左螺纹和右螺纹搅拌头对3 mm厚的LY12（CZ）铝合金进行了搅拌摩擦焊搭接试验,研究了双道焊搭接界面的迁移及接头的性能.结果表明,搅拌头顺时针旋转,采用左螺纹搅拌头时,焊核两侧的搭接界面向上迁移;采用右螺纹搅拌头时,搭接界面向下迁移.单道焊时,由于受拉边总存在迁移界面,导致有效承载板厚...
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| 关 键 词： | 搅拌摩擦焊 搭接 双道焊 界面迁移 |
| 收稿时间： | 2010/11/10 0:00:00 |
Influence of double passes weld on interface migration and mechanical property of friction stir lap joint |
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| KE Liming,WEI Peng,XING Li,LUO Kai and LUAN Guohong.Influence of double passes weld on interface migration and mechanical property of friction stir lap joint[J].Transactions of The China Welding Institution,2011,32(7):5-8. |
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| Authors: | KE Liming WEI Peng XING Li LUO Kai and LUAN Guohong |
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| Affiliation: | School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China,School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China,School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China,School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China and Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China |
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| Abstract: | Friction stir lap joints of 3 mm thick plates of LY12(CZ)aluminum alloy were conducted using the cylindrical tool with clockwise and counter-clockwise screw thread.The interface migration and mechanical property of friction stir lap joint of double passes weld were investigated.The results show that,the interfaces at both sides of the welds pull-up using the tool with counter-clockwise screw thread when the tool rotating clockwisely,while the interfaces pull-down using the tool with clockwise screw thread.With single pass weld,the effective sheet thickness(EST)is reduced because the interface migratory always exists on the loaded side.The interface appearance at one side of the weld pull-up and the other side pull-down was obtained if the tool with clockwise and counter-clockwise screw thread were used alternately by double passes weld.The strength of double passes welds could reach more than twice as the single pass weld because of avoiding the influence of the interface migration on the loaded side |
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| Keywords: | friction stir welding lap joint double passes weld interface migration |
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