| The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading | |
| Zhang, Fan1; Ren, Yu2,3; Yang, Zhiqing4; Su, Huhu4; Lu, Zhen5; Tan, Chengwen3; Peng, Hailong6; Watanabe, Kentaro1; Li, Bin7; Barnett, Matthew R.8; Chen, Mingwei1,9 | |
| Corresponding Author | Tan, Chengwen(tanchengwen@126.com) ; Chen, Mingwei(mwchen@jhu.edu) |
| 2020-04-15 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 188Pages:203-214 |
| Abstract | We report atomic-scale observations on the interaction of {10 (1) over bar2} deformation twins with 14H long-period stacking ordered (LPSO) phase in a magnesium alloy. It was found that the interaction strongly depends on the thicknesses of LPSO plates as well as the thickness ratios between LPSO plates and twins. We observed three size-dependent structure responses of LPSO to incoming twins: (1) pure shearing of thin LPSO plates in line with the incursive {10 (1) over bar2} twins; (2) twin-to-dislocation 'switch' from the alpha-Mg matrix to LPSO when LPSO/twin thickness ratios are below a critical value of 0.17 +/- 0.01; and (3) elastic deformation of LPSO to accommodate the propagation of incoming twin when LPSO/twin thickness ratios are larger than 0.17 +/- 0.01. Moreover, the inter-plate spacing of LPSO also influences the propagation modes of twins by controlling nucleation sites of new twins. These size-dependent interactions are accomplished by local structural transition of face-centered cubic units of LPSO during thin plate shearing and formation of gliding dislocations during LPSO deformation and twin blocked. The atomic-scale observations provide fundamental insights into these interaction modes and, hence, the precipitation strengthening mechanisms in Mg alloys under both quasi-static and dynamic loadings. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Magnesium alloy Deformation twin Long-period stacking ordered phase Shock loading Transmission electron microscopy |
| Funding Organization | World Premier International Research Center (WPI) Initiative by MEXT, Japan ; JSPS postdoctoral program ; Whiting School of Engineering, Johns Hopkins University ; US National Science Foundation |
| DOI | 10.1016/j.actamat.2020.01.064 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | World Premier International Research Center (WPI) Initiative by MEXT, Japan ; JSPS postdoctoral program ; Whiting School of Engineering, Johns Hopkins University ; US National Science Foundation[CMMI-1635088] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000527826500019 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138570 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Tan, Chengwen; Chen, Mingwei |
| Affiliation | 1.Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan 2.North China Elect Power Univ, Inst Adv Mat, Beijing 102206, Peoples R China 3.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.AIST, Math Adv Mat Open Innovat Lab, Sendai, Miyagi 9808577, Japan 6.Cent South Univ, Shcool Mat Sci & Engn, Changsha 410083, Peoples R China 7.Univ Nevada, Dept Chem & Mat Engn, Reno, NV 89557 USA 8.Deakin Univ, Inst Frontier Mat, Pigdons Rd, Geelong, Vic 3216, Australia 9.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA |
| Recommended Citation GB/T 7714 | Zhang, Fan,Ren, Yu,Yang, Zhiqing,et al. The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading[J]. ACTA MATERIALIA,2020,188:203-214. |
| APA | Zhang, Fan.,Ren, Yu.,Yang, Zhiqing.,Su, Huhu.,Lu, Zhen.,...&Chen, Mingwei.(2020).The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading.ACTA MATERIALIA,188,203-214. |
| MLA | Zhang, Fan,et al."The interaction of deformation twins with long-period stacking ordered precipitates in a magnesium alloy subjected to shock loading".ACTA MATERIALIA 188(2020):203-214. |
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