FRICTION STIR WELDING AND LOW-TEMPERATURE SUPERPLASTICITY OF 7B04 Al SHEET

IMR OpenIR

	FRICTION STIR WELDING AND LOW-TEMPERATURE SUPERPLASTICITY OF 7B04 Al SHEET
	Yang Chao 1,2; Wang Jijie 2; Ma Zongyi 1; Ni Dingrui 1; Fu Mingjie 3; Li Xiaohua 3; Zeng Yuansong 3
通讯作者	Ni Dingrui(drni@imrac.cn)
	2015-12-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	51 期号:12 页码:1449-1456
摘要	Annealed 7B04 Al sheets in thickness of 2 mm were subjected to friction stir welding (FSW) under three rotation rate and welding speed parameters of 1600 r/min, 200 mm/min; 800 r/min, 200 mm/min and 400 r/min, 400 mm/min, respectively. The effect of welding parameters on the tensile property and microstructure of the FSW joints were investigated, with more efforts focusing on the low-temperature superplasticity of the nugget zones (NZs). The results showed that FSW joints with high quality could be produced by controlling welding parameters, with a joint strength coefficient of 100% being obtained. Dynamic recrystallization took place in the NZs with fine and equiaxed grains generated. The grain size of the base material was about 300 mu m, while it was significantly decreased in the NZs with decreasing the rotation rate: about 2, 1 and 0.6 mu m for the above three samples, respectively. The fine grain structure of the NZs could facilitate their superplastic deformation. The NZs exhibited superplastic elongations ranged from 160% to 590% at 300 degrees C at strain rates of superplasticity of 790% was obtained at 350 C at the 1 x10(-3) and 3x10(-4) s(-1). The maximum superplasticity of 790% was obtained at 350 degrees C at strain rates of 1 x10(-3) s(-1). The ability to superplastic deformation in the NZs at 400 degrees C.
关键词	ultra-high strength aluminium alloy friction stir welding superplasticity microstructure
资助者	National Natural Science Foundation of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51331008]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000367770600004
出版者	SCIENCE PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/121471
专题	中国科学院金属研究所
通讯作者	Ni Dingrui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Shenyang Aerosp Univ, Coll Mat Sci & Engn, Shenyang 110036, Peoples R China 3.Beijing Aeronaut Mfg Technol Res Inst, Met Forming Technol Dept, Beijing 100024, Peoples R China
推荐引用方式 GB/T 7714	Yang Chao,Wang Jijie,Ma Zongyi,et al. FRICTION STIR WELDING AND LOW-TEMPERATURE SUPERPLASTICITY OF 7B04 Al SHEET[J]. ACTA METALLURGICA SINICA,2015,51(12):1449-1456.
APA	Yang Chao.,Wang Jijie.,Ma Zongyi.,Ni Dingrui.,Fu Mingjie.,...&Zeng Yuansong.(2015).FRICTION STIR WELDING AND LOW-TEMPERATURE SUPERPLASTICITY OF 7B04 Al SHEET.ACTA METALLURGICA SINICA,51(12),1449-1456.
MLA	Yang Chao,et al."FRICTION STIR WELDING AND LOW-TEMPERATURE SUPERPLASTICITY OF 7B04 Al SHEET".ACTA METALLURGICA SINICA 51.12(2015):1449-1456.