Luders strain of the fine-grained material under the electric current

doi:10.1016/j.msea.2021.141924

CORC > 金属研究所 > 中国科学院金属研究所

	Luders strain of the fine-grained material under the electric current
	Zhang, Xinfang 1; Zhou, Shuai 1; Zhang, Hexiong 1; Liu, Xuebing 1; Yang, Huajie 2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-09-21
卷号	825 页码:10
关键词	Luders strain Grain size Electric current Dislocation Solute atom Hall-petch relationship
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.141924
通讯作者	Zhang, Xinfang(xfzhang@ustb.edu.cn)
英文摘要	The Hall-Petch-like relationship between the Luders strain and the average grain size of an Al-5.16Zn-2.2Mg1.46Cu alloy under the pulsed electric current is investigated. It is found that the Luders strain increases as the average grain size decreases. In addition, when the average grain size is the same, the current parameter has a significant effect on the absolute value of the slope in the Hall-Petch-like relationship. Based on the characteristics of interaction between the solute atoms and dislocations during the Luders strain, the competition between pinning behavior of solute atoms and depinning behavior of dislocations under the electric current is explored, and a relevant mathematical model is established. According to the new mathematical model, the difference of the above competitive behavior under two different current densities is analyzed. When the current density is 5 A/mm2, the pinning behavior of solute atoms is dominant in the competition, and the length of the yield plateau of each grain size becomes shorter; however, when the current density is 55 A/mm2, the dislocation depinning behavior dominants the competition and the Luders strain of each grain size increases. It is found that the current density can affect the competition between the pinning of solute atoms and the depinning of dislocations, thus affecting the Luders strain.
资助项目	National Natural Science Foundation of China[51874023] ; National Natural Science Foundation of China[U1860206] ; National Key Research and Development Program of China[2019YFC1908403] ; Fundamental Research Funds for the Central Universities, Recruitment Program of Global Experts[FRF-TP-20-04 B]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000696638200003
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities, Recruitment Program of Global Experts
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166967]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Xinfang
作者单位	1.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China 2.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	Zhang, Xinfang,Zhou, Shuai,Zhang, Hexiong,et al. Luders strain of the fine-grained material under the electric current[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,825:10.
APA	Zhang, Xinfang,Zhou, Shuai,Zhang, Hexiong,Liu, Xuebing,&Yang, Huajie.(2021).Luders strain of the fine-grained material under the electric current.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,825,10.
MLA	Zhang, Xinfang,et al."Luders strain of the fine-grained material under the electric current".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 825(2021):10.