| 温度峰值影响6061铝/AZ31B镁异种材料FSW接头成形的规律 |
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| 引用本文： | 刘震磊,崔祜涛,姬书得,徐敏强,孟祥晨.温度峰值影响6061铝/AZ31B镁异种材料FSW接头成形的规律[J].焊接学报,2016,37(6):23-26. |
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| 作者姓名： | 刘震磊 崔祜涛 姬书得 徐敏强 孟祥晨 |
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| 作者单位： | 1.哈尔滨工业大学 深空探测基础研究中心, 哈尔滨 150080;沈阳航空航天大学 航空航天工程学部, 沈阳 110136 |
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| 基金项目： | 国家自然科学基金资助项目(51204111)；航空科学基金资助项目(2014ZE54021) |
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| 摘 要： | 以6061-T6铝合金与AZ31B镁合金为研究对象，基于Abaqus软件进行了异种材料搅拌摩擦焊过程的温度场数值模拟，重点分析搅拌针偏置镁侧下的搅拌区温度峰值影响焊缝表面成形的规律。结果表明，当焊接温度峰值高于Al-Mg共晶温度时，搅拌针根部附近区域会出现较明显的黏着现象，其随着焊接速度的降低而加剧，这与焊接温度峰值的升高相关。随着焊接速度的增加，焊缝表面更易避免裂纹缺陷的产生。当搅拌头的转速为1200r/min且焊接速度为40mm/min时，6061铝/AZ31B镁异种材料焊接接头的表面成形良好。
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| 关 键 词： | 搅拌摩擦焊 铝合金 镁合金 温度场 表面成形 |
| 收稿时间： | 2016/3/12 0:00:00 |
Effect of peak temperature on formation of 6061Al/AZ31BMg dissimilar FSW joint |
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| LIU Zhenlei,CUI Hutao,JI Shude,XU Minqiang and MENG Xiangchen.Effect of peak temperature on formation of 6061Al/AZ31BMg dissimilar FSW joint[J].Transactions of The China Welding Institution,2016,37(6):23-26. |
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| Authors: | LIU Zhenlei CUI Hutao JI Shude XU Minqiang and MENG Xiangchen |
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| Affiliation: | 1.Deep Space Exploration Research Center, Harbin Institute of Technology, Harbin 150080, China;Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China2.Deep Space Exploration Research Center, Harbin Institute of Technology, Harbin 150080, China3.Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China |
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| Abstract: | Choosing 6061-T6 Al alloy and AZ31B Mg alloy as research objects, temperature field during dissimilar friction stir welding (FSW) process was simulated by the Abaqus software. Effect of welding peak temperature in stir zone on weld surface formation was mainly discussed under tool offset on Mg alloy plate. When the welding peak temperature is higher than Al-Mg eutectic temperature, adhesion phenomenon appears near the pin root, which is more serious under lower welding speed owing to the increase of peak temperature. With increasing welding speed, crack in weld surface is more easily avoided. At the rotational velocity of 1200r/min and the welding speed of 40mm/min, 6061Al/AZ31BMg dissimilar FSW joint with excellent-formation surface is successfully attained. |
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| Keywords: | friction stir welding Al alloy Mg alloy temperature field surface formation |
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