| Stacking faults and growth twins in long-period stacking ordered structures in a near-equilibrium Mg97Zn1Y2 alloy | |
| Jin, Q. Q.1; Shao, X. H.1; Yang, L. X.1; Zhou, Y. T.1; Zhang, B.1; Zheng, S. J.2; Ma, X. L.1 | |
| Corresponding Author | Shao, X. H.(xhshao@imr.ac.cn) |
| 2020-07-01 | |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| ISSN | 1044-5803 |
| Volume | 165Pages:7 |
| Abstract | We investigated the structure, symmetry, and distribution of stacking faults and growth twins in 18R and 14H long-period stacking ordered (LPSO) structures in a near-equilibrium Mg97Zn1Y2 (at.%) alloy by transmission electron microscopy. The stacking faults and growth twins here result from the insertion of the n-Mg components in the LPSO structure, and some of them possess inversion centers or mirror symmetry. The stacking faults and growth twins in 18R LPSO depend on whether the sum of inserted Mg layers of all n-Mg components in defects is even number or odd number, respectively, while only stacking faults appear in 14H LPSO. The gliding of Shockley partial dislocation pairs induces the transformation of stacking faults and motion of twin boundary. Statistically, the periodical arrangement of stacking faults in 18R or 14H LPSO structures results in the formation of superstructures, such as 62L, 86L, 152L, and 235L. |
| Keyword | Magnesium alloys Long-period stacking ordered (LPSO) structure HAADF-STEM Stacking fault (SF) Growth twins Shockley partial dislocations |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.matchar.2020.110395 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51801214] ; National Natural Science Foundation of China[51871222] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| WOS ID | WOS:000541742100032 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139563 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Shao, X. H. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Hebei Univ Technol, Sch Mat Sci & Engn, Res Inst Energy Equipment Mat, Tianjin 300130, Peoples R China |
| Recommended Citation GB/T 7714 | Jin, Q. Q.,Shao, X. H.,Yang, L. X.,et al. Stacking faults and growth twins in long-period stacking ordered structures in a near-equilibrium Mg97Zn1Y2 alloy[J]. MATERIALS CHARACTERIZATION,2020,165:7. |
| APA | Jin, Q. Q..,Shao, X. H..,Yang, L. X..,Zhou, Y. T..,Zhang, B..,...&Ma, X. L..(2020).Stacking faults and growth twins in long-period stacking ordered structures in a near-equilibrium Mg97Zn1Y2 alloy.MATERIALS CHARACTERIZATION,165,7. |
| MLA | Jin, Q. Q.,et al."Stacking faults and growth twins in long-period stacking ordered structures in a near-equilibrium Mg97Zn1Y2 alloy".MATERIALS CHARACTERIZATION 165(2020):7. |
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