Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment

doi:10.1016/j.matchar.2020.110423

IMR OpenIR

	Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment
	Liu, Chunquan 1,2; Chen, Xianhua 1,2,3; Zhang, Wei 4; Zhang, Yusheng 4; Pan, Fusheng 1,2
通讯作者	Chen, Xianhua(xhchen@cqu.edu.cn)
	2020-08-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	166 页码:11
摘要	A nanocrystalline surface layer with average grain size of 98 nm of Mg-6Zn-0.2Y-0.4Ce-0.5Zr (wt%) alloy was fabricated successfully by sliding friction treatment (SFT). The abundant second-phase particles are heavily broken and homogeneously distributed in the matrix after SFT. Electron backscattered diffraction (EBSD) indicates that the intensity of basal texture shows a gradually decreasing trend with the decreasing distance from the treated surface due to the new recrystallized grains with random grain orientation. The process of grain refinement is found to involve the following stages: (i) the twins and dislocations are activated under the low strain area; (ii) the high density of dislocations accumulated near the second-phase particles promote the formation of substructures and the shear bands; (iii) the increasing strain arouses the transformation of substructures; (iv) multiple stacking faults will induce the nucleation of new strain-free grains under the high strain; (v) the nanosized grains are acquired. The abundant fine second-phase particles give large contribution for the refining process due to the pinning effect on the dislocations.
关键词	Magnesium alloy Surface nanocrystallization Gradient materials Grain refinement Sliding friction treatment Texture
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.matchar.2020.110423
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0301100] ; National Natural Science Foundation of China[51571043] ; Fundamental Research Funds for the Central Universities[2018CDJDCL0019] ; Fundamental Research Funds for the Central Universities[cqu2018CDHB1A08] ; Fundamental Research Funds for the Central Universities[2018CDGFCL0005]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000546909300012
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：17[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/321006/139645
专题	中国科学院金属研究所
通讯作者	Chen, Xianhua
作者单位	1.Chongqing Univ, Int Joint Lab Light Alloys MOE, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China 2.Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400045, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chunquan,Chen, Xianhua,Zhang, Wei,et al. Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment[J]. MATERIALS CHARACTERIZATION,2020,166:11.
APA	Liu, Chunquan,Chen, Xianhua,Zhang, Wei,Zhang, Yusheng,&Pan, Fusheng.(2020).Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment.MATERIALS CHARACTERIZATION,166,11.
MLA	Liu, Chunquan,et al."Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment".MATERIALS CHARACTERIZATION 166(2020):11.