Impact Performance of Friction Stir Welded Joints of Thick Plate Aluminum Alloy

doi:10.11896/j.issn.1005-023X.2018.22.017

	Impact Performance of Friction Stir Welded Joints of Thick Plate Aluminum Alloy
	Zhang, Zhongke; Zhang, Jianfei; Yu, Yang; Wang, Xijing
刊名	Cailiao Daobao/Materials Review
	2018-11-25
卷号	32 期号:11 页码:3936-3940
关键词	Coarsening Copper alloys Fracture toughness Friction Friction stir welding Grain size and shape Heat affected zone Magnesium alloys Microstructure Research laboratories Different thickness Friction stir welded joints Impact performance Microstructure variations Second phase Thermomechanically affected zones Thick plate Weld nuggets
ISSN号	1005023X
DOI	10.11896/j.issn.1005-023X.2018.22.017
英文摘要	Butt welding of 2A12 aluminum alloy with thickness of 30 mm was conducted by friction stir welding, the microstructure and impact performance of the joints were analyzed at different thickness positions. The results showed that with the decrease of the heat input, the grain size in the upper part of the weld nugget zone (NZ) was coarsening compared to the lower part of NZ. Causing the impact toughness in the upper area of the joint lower than that in the bottom. The grain size was the smallest in the NZ, a little bit coarser in the thermo-mechanically affected zone (TMAZ), and the coarsest in the heat affected zone (HAZ). There existed difference in impact toughness of the welded joint. The impact toughness of NZ was higher than that of HAZ, The impact toughness of TMAZ was the lowest due to the existence of micro cracks. The grain size of the upper part of NZ was smaller than that of the bottom part of TMAZ, but the impact toughness of these two parts was just the opposite, because the number of the second phase (Al2CuMg) was larger in NZ. In conclusion the change of impact toughness of welded joints was not only related to the microstructure variation, but also the amount of the second phase in the region. © 2018, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114082]
专题	材料科学与工程学院土木工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Zhongke,Zhang, Jianfei,Yu, Yang,et al. Impact Performance of Friction Stir Welded Joints of Thick Plate Aluminum Alloy[J]. Cailiao Daobao/Materials Review,2018,32(11):3936-3940.
APA	Zhang, Zhongke,Zhang, Jianfei,Yu, Yang,&Wang, Xijing.(2018).Impact Performance of Friction Stir Welded Joints of Thick Plate Aluminum Alloy.Cailiao Daobao/Materials Review,32(11),3936-3940.
MLA	Zhang, Zhongke,et al."Impact Performance of Friction Stir Welded Joints of Thick Plate Aluminum Alloy".Cailiao Daobao/Materials Review 32.11(2018):3936-3940.