Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder

doi:10.1016/j.jmatprotec.2023.118176

IMR OpenIR

	Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder
	Su, Xixi 1; Gao, Qiang 1; Ni, Dingrui 2; Zhang, Zhen 2; Feng, Zhanhao 1; Huang, Peng 1; Sun, Xi 3; Zu, Guoyin 1
通讯作者	Zu, Guoyin(zugy@smm.neu.edu.cn)
	2023-12-01
发表期刊	JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN	0924-0136
卷号	322 页码:12
摘要	Friction stir welding (FSW) has a significant impact on welding aluminum foam sandwich (AFS) precursor. Yet, the understanding of the microstructure and foaming process on rolled-state powder of welded precursor remains limited. This study exploited the single-pass double-sided forming welding approach to weld the AFS precursor, while the impact of different process parameters of FSW on the microstructure of rolled-state powder was evaluated. Meanwhile, the foaming process of anisotropic powder at different directions was observed in-situ using synchrotron radiation. The results display that FSW transforms gap-like voids, which were similar to 20 mu m in width and 100-400 mu m in length, into circular voids with a diameter of similar to 6 mu m in the powder at the weld zone (WZ). The welding process eliminates powder agglomeration aggregation and increases the relative density (>97%) of rolled-state powder. However, the low thermal conductivity of the rolled-state powder (117 Wm(-1)K-1) leads to a tunnel defect at the root of the WZ. In addition, in-situ observation experiments of the foaming process found that the bubble nucleation of rolled-state powder exhibits anisotropic characteristics, and the welding process causes a transition in the types of bubble nucleation in the WZ region. This study demonstrates the feasibility of improving the anisotropy of powders caused by processing methods to obtain an isotropic pore formation and foam expansion by FSW technology.
关键词	Aluminum foam sandwich Friction stir welding Anisotropy Powder metallurgy
资助者	National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.jmatprotec.2023.118176
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52071069] ; National Natural Science Foundation of China[U1332110] ; LiaoNing Revitalization Talents Program[XLYC1902097]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary
WOS记录号	WOS:001094568500001
出版者	ELSEVIER SCIENCE SA
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/321006/177662
专题	中国科学院金属研究所
通讯作者	Zu, Guoyin
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Su, Xixi,Gao, Qiang,Ni, Dingrui,et al. Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2023,322:12.
APA	Su, Xixi.,Gao, Qiang.,Ni, Dingrui.,Zhang, Zhen.,Feng, Zhanhao.,...&Zu, Guoyin.(2023).Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,322,12.
MLA	Su, Xixi,et al."Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 322(2023):12.