Nanometer-sized domain structure in complex Mg21Zn25 formed by eutectoid phase transformation in a Mg-Zn alloy
文献类型：期刊论文
| 作者 | Zhang, LF; Wang, WZ; Hu, WW; Yang, ZQ; Ye, HQ; Yang, ZQ (reprint author), Univ Sci & Technol China, Shenyang Natl Lab Mat Sci, Sch Mat Sci & Engn, Inst Met Res,Chinese Acad Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2018-05-15 |
| 卷号 | 745页码:319-330 |
| 关键词 | Close-packed Phases Juxtaposed Pentagonal Antiprisms Transmission Electron-microscopy Laves-phase Mechanical-properties Quasi-crystals Magnesium Alloys C-14 Laves Re Alloys Zr Alloy |
| ISSN号 | 0925-8388 |
| 英文摘要 | Domain boundaries (DBs) and their connections in complex Mg21Zn25 have been studied using aberration-corrected scanning-transmission electron microscopy. Three types of {11 (2) over bar0} DBs divided Mg21Zn25 into nanometer-sized domains. Laves-type columns on both sides of different DBs share quadrangular prisms, thin hexagonal prisms or prismatic faces, respectively. This is similar to overlap of clusters in quasicrystals, but different from previously known DBs with displacing vectors along the interfaces. A new concept of separation vector is thus introduced to characterize the DBs and their junctions in Mg21Zn25. Local Zn enrichment activated overgrowth of Laves-type columns, playing a critical role in the formation of DBs in Mg21Zn25 during eutectoid transformation. The sum of separation vectors at each junction is zero for all kinds of junctions, which keeps Mg21Zn25 atomically compact. Our results may shed light on understanding of microstructural evolution during phase transformation, lattice defects and their formation mechanisms in strengthening compounds in Mg-Zn-based alloys. (C) 2018 Elsevier B.V. All rights reserved.; Domain boundaries (DBs) and their connections in complex Mg21Zn25 have been studied using aberration-corrected scanning-transmission electron microscopy. Three types of {11 (2) over bar0} DBs divided Mg21Zn25 into nanometer-sized domains. Laves-type columns on both sides of different DBs share quadrangular prisms, thin hexagonal prisms or prismatic faces, respectively. This is similar to overlap of clusters in quasicrystals, but different from previously known DBs with displacing vectors along the interfaces. A new concept of separation vector is thus introduced to characterize the DBs and their junctions in Mg21Zn25. Local Zn enrichment activated overgrowth of Laves-type columns, playing a critical role in the formation of DBs in Mg21Zn25 during eutectoid transformation. The sum of separation vectors at each junction is zero for all kinds of junctions, which keeps Mg21Zn25 atomically compact. Our results may shed light on understanding of microstructural evolution during phase transformation, lattice defects and their formation mechanisms in strengthening compounds in Mg-Zn-based alloys. (C) 2018 Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China [51371178, 51390473, 51771202]; Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-JSC027]; Liaoning Province [2015020237] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79307]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, ZQ (reprint author), Univ Sci & Technol China, Shenyang Natl Lab Mat Sci, Sch Mat Sci & Engn, Inst Met Res,Chinese Acad Sci, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, LF,Wang, WZ,Hu, WW,et al. Nanometer-sized domain structure in complex Mg21Zn25 formed by eutectoid phase transformation in a Mg-Zn alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,745:319-330. |
| APA | Zhang, LF,Wang, WZ,Hu, WW,Yang, ZQ,Ye, HQ,&Yang, ZQ .(2018).Nanometer-sized domain structure in complex Mg21Zn25 formed by eutectoid phase transformation in a Mg-Zn alloy.JOURNAL OF ALLOYS AND COMPOUNDS,745,319-330. |
| MLA | Zhang, LF,et al."Nanometer-sized domain structure in complex Mg21Zn25 formed by eutectoid phase transformation in a Mg-Zn alloy".JOURNAL OF ALLOYS AND COMPOUNDS 745(2018):319-330. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。