| Microstructures and properties analysis of dissimilar metal joint in the friction stir welded copper to aluminum alloy |
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| 作者姓名： | 王希靖 张忠科 达朝炳 李晶 |
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| 作者单位： | [1]State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, 730050 [2]Qinghai Oilfield Construction Co., Ldt, Dunhuang, 736202 |
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| 基金项目： | This project is supported by National Natural Science Foundation of China （NSFC） （10577010）. |
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| 摘 要： | This paper mainly concentrated on the feasibility of friction stir welding of dissimilar metal of aluminum alloy to copper （I2） and a preliminary analysis of welding parameters influencing on the microstructures and properties of joint was carried out. The results indicated that the thickness of workpiece played an important role in the welding parameters which could succeed in the friction stir welding of dissimilar metal of copper to aluminum alloy, and the parameters were proved to be a narrow choice. The interfacial region between copper and aluminum in the dissimilar joint was not uniformly mixed, constituted with part of incomplete mixing zone, complete mixing zone, dispersion zone and the most region＇ s boundary was obvious. Meantime a kind banded structure with inhomogeneous width was formed. The intermetallic compounds generated during friction stir welding in the interfacial region were mainly CugAl4, Al2Cu etc, and their hardness was higher than oihers.
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| 关 键 词： | 相异金属接头 铜 铝合金 摩檫搅拌焊 显微结构 交织性质 |
Microstructures and properties analysis of dissimilar metal joint in the friction stir welded copper to aluminum alloy |
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| Wang Xijing,Zhang Zhongke,Da Chaobing,Li Jing.Microstructures and properties analysis of dissimilar metal joint in the friction stir welded copper to aluminum alloy[J].China Welding,2007,16(1):57-62. |
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| Authors: | Wang Xijing Zhang Zhongke Da Chaobing Li Jing |
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| Abstract: | This paper mainly concentrated on the feasibility of friction stir welding of dissimilar metal of aluminum alloy to copper (T2) and a preliminary analysis of welding parameters influencing on the microstructures and properties of joint was carried out. The results indicated that the thickness of workpiece played an important role in the welding parameters which could succeed in the friction stir welding of dissimilar metal of copper to aluminum alloy, and the parameters were proved to be a narrow choice. The interfacial region between copper and aluminum in the dissimilar joint was not uniformly mixed, constituted with part of incomplete mixing zone, complete mixing zone, dispersion zone and the most region's boundary was obvious. Meantime a kind banded structure with inhomogeneous width was formed. The intermetallic compounds generated during friction stir welding in the interfacial region were mainly Cu9Al4 , Al2Cu etc, and their hardness was higher than others. |
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| Keywords: | friction stir welding dissimilar metals copper aluminum alloy |
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