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Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment
Liu, Chunquan1,2; Chen, Xianhua1,2,3; Zhang, Wei4; Zhang, Yusheng4; Pan, Fusheng1,2
Corresponding AuthorChen, Xianhua(xhchen@cqu.edu.cn)
2020-08-01
Source PublicationMATERIALS CHARACTERIZATION
ISSN1044-5803
Volume166Pages:11
AbstractA 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.
KeywordMagnesium alloy Surface nanocrystallization Gradient materials Grain refinement Sliding friction treatment Texture
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI10.1016/j.matchar.2020.110423
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS IDWOS:000546909300012
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139645
Collection中国科学院金属研究所
Corresponding AuthorChen, Xianhua
Affiliation1.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
Recommended Citation
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.
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