Microstructural evolution in the ultrafine-grained surface layer of Mg-Zn-Y-Ce-Zr alloy processed by sliding friction treatment
文献类型：期刊论文
| 作者 | Liu, Chunquan1,2; Chen, Xianhua1,2,3; Zhang, Wei4; Zhang, Yusheng4; Pan, Fusheng1,2 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 166页码:11 |
| ISSN号 | 1044-5803 |
| 关键词 | Magnesium alloy Surface nanocrystallization Gradient materials Grain refinement Sliding friction treatment Texture |
| DOI | 10.1016/j.matchar.2020.110423 |
| 通讯作者 | Chen, Xianhua(xhchen@cqu.edu.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000546909300012 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.imr.ac.cn/handle/321006/139644]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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