Microstructures and properties of friction stir welding joints for LF2 aluminum alloy

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	Microstructures and properties of friction stir welding joints for LF2 aluminum alloy
	Wang, Xi-Jing; A, Rong; Guo, Rui-Jie; Han, Xiao-Hui
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2004-10-01
卷号	14 期号:10 页码:1705-1710
ISSN号	10040609
英文摘要	The welding of 10 mm thick LF2 aluminum alloy in friction stir welding was investigated. The results show that thicker plate should be jointed at lower welding velocity and rotation speed, otherwise there would get the joint with huge tunnel defect. The highest strength joints that are equal to parent metal can be obtained at 9 mm/min of welding velocity, 950 r/min of rotational speed and 6230 W of input energy, which are regarded as the most ideal parameters under experimental welding conditions. There are the smallest size grains of 15 μm in weld nugget; Heat affected zone are composed of coarse grains and the largest size of heat affected zone microstructure is 28 μm; Thermomechanically affected zone consists of strippy structure which is 85 μm in length in some area. Average microhardness in weld nugget is equal to parent metal's, the most microhardness is HV95 and lower than parent metal's in the area near weld nugget.
语种	中文
出版者	Central South University of Technology, Changsha, China
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150311]
专题	兰州理工大学
作者单位	Lab. of Adv. Non-ferrous Metal Mat., Lanzhou Univ. of Technol., Lanzhou 730050, China
推荐引用方式 GB/T 7714	Wang, Xi-Jing,A, Rong,Guo, Rui-Jie,et al. Microstructures and properties of friction stir welding joints for LF2 aluminum alloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2004,14(10):1705-1710.
APA	Wang, Xi-Jing,A, Rong,Guo, Rui-Jie,&Han, Xiao-Hui.(2004).Microstructures and properties of friction stir welding joints for LF2 aluminum alloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,14(10),1705-1710.
MLA	Wang, Xi-Jing,et al."Microstructures and properties of friction stir welding joints for LF2 aluminum alloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 14.10(2004):1705-1710.