| 6082铝合金搅拌摩擦焊焊缝的电化学腐蚀行为 |
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| 引用本文： | 赵亚东,沈长斌,刘书华,葛继平,黄振晖.6082铝合金搅拌摩擦焊焊缝的电化学腐蚀行为[J].焊接学报,2008,29(10):105-107. |
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| 作者姓名： | 赵亚东 沈长斌 刘书华 葛继平 黄振晖 |
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| 作者单位： | 1. 大连交通大学,辽宁省轨道交通关键材料重点实验室,辽宁,大连,116028
2. 中国北车集团,唐山轨道客车有限责任公司产品研发中心,河北,唐山,063035 |
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| 摘 要： | 通过室温静态挂片试验以及动电位极化曲线测试，在室温0．2mol／LNaHSO3＋0．6mol／L NaCl溶液中，对6082铝合金搅拌摩擦焊（FSW）焊缝以及6082铝合金母材的电化学腐蚀行为进行了研究。结果表明，主轴转速为1200r／min，焊接速度为200mm／min，搅拌头倾角为3°时的焊缝与母材相比，平均腐蚀速率较小，腐蚀电位Ecorr正向移动，腐蚀电流密度J变小。同时使用扫描电子显微镜（SEM）对室温静态挂片试验试样的表面形貌进行了观察，发现焊缝表面上只出现少量较浅的点蚀坑，而母材表面的点蚀现象较为严重。
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| 关 键 词： | 铝合金 搅拌摩擦焊 焊缝 电化学腐蚀 |
| 收稿时间： | 2007/12/6 0:00:00 |
Electrochemical corrosion behavior of friction stir welding weld of 6082 aluminum alloy |
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| ZHAO Yadong,SHEN Changbin,LIU Shuhu,GE Jiping and Huang Zhenhui.Electrochemical corrosion behavior of friction stir welding weld of 6082 aluminum alloy[J].Transactions of The China Welding Institution,2008,29(10):105-107. |
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| Authors: | ZHAO Yadong SHEN Changbin LIU Shuhu GE Jiping and Huang Zhenhui |
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| Affiliation: | Liaoning Key Materials Laboratory for Railway, Dalian Jiaotong University, Dalian 116028, Liaoning, China,Liaoning Key Materials Laboratory for Railway, Dalian Jiaotong University, Dalian 116028, Liaoning, China,Liaoning Key Materials Laboratory for Railway, Dalian Jiaotong University, Dalian 116028, Liaoning, China,Liaoning Key Materials Laboratory for Railway, Dalian Jiaotong University, Dalian 116028, Liaoning, China and R & D Center, CNR Tangshan Railway Vehicle Limited Liability Company, Tangshan 063035, Hebei, China |
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| Abstract: | In the ambient temperature solution of 0.2 mol/L NaHSO3 and 0.6 mol/L NaCl, the electrochemical corrosion behavior of friction stir welding weld of 6082 aluminum alloy and parent material were investigated by static weight loss experiment (gravimetric test) and potentiodynamic polarization curve.With the rotation rate of 1 200 r/min, the traverse speed of 200 m/min and 3° tool tilt, the corrosion rate of the weld was less than that of the parent material, and the corrosion potential of the weld was more positive than that of the parent material, the corrosion current density was less than that of the parent material.SEM observation showed that a few shallow pits appeared on the surface of the weld, however, a large number of deeper pits emerged on the surface of the parent material. |
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| Keywords: | aluminum alloy friction stir welding weld electrochemical corrosion |
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