中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 金属研究所
  3. 中国科学院金属研究所
Effect of friction stir welding on microstructure and foaming mechanism of rolled-state anisotropic powder

文献类型：期刊论文

作者Su, Xixi2; Gao, Qiang2; Ni, Dingrui3; Zhang, Zhen3; Feng, Zhanhao2; Huang, Peng2; Sun, Xi1; Zu, Guoyin2
刊名JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
出版日期2023-12-01
卷号322页码:12
关键词Aluminum foam sandwich Friction stir welding Anisotropy Powder metallurgy
ISSN号0924-0136
DOI10.1016/j.jmatprotec.2023.118176
通讯作者Zu, Guoyin(zugy@smm.neu.edu.cn)
英文摘要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.
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
语种英语
WOS记录号WOS:001094568500001
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
源URL[http://ir.imr.ac.cn/handle/321006/177660]  
专题金属研究所_中国科学院金属研究所
通讯作者Zu, Guoyin
作者单位1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
2.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, 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.

入库方式： OAI收割

来源：金属研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。