Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg-Zn-Y-Zr alloy
文献类型：期刊论文
| 作者 | Peng, Z. Z. ; Shao, X. H. ; Jin, Q. Q. ; Liu, J. F. ; Ma, X. L. |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2017-02-27 |
| 卷号 | 687页码:211-220 |
| 关键词 | Magnesium alloys LPSO structure Kink Solute redistribution HAADF-STEM |
| ISSN号 | 0921-5093 |
| 通讯作者 | Shao, XH ; Ma, XL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China. |
| 中文摘要 | The microstructural and chemical features of deformation-induced interfaces are one of key issues in engineering materials because they determine plastic deformation behavior and thus affect mechanical properties of the materials. Using atomic-resolution high-angle annular dark-field scanning transmission electron microscopy, we characterized deformation-induced low angle kink boundaries (LAKBs) in long period stacking ordered (LPSO) structures in an extruded Mg-2.3Zn-6.6Y-0.56Zr (wt%) alloy. We clarified that the LAKB in LPSO phase consists of an array of < a > dislocations, while the LAKB in Mg interlayers sandwiched between LPSO phases is composed of an array of dissociated < c+a > and/or < a > dislocations. Correspondingly, the former and the latter LAKBs are depleted and segregated with Zn/Y/Zr elements, respectively. I-2 stacking fault (SF) is meanwhile generated in Mg layers, and its energy is evaluated approximately 0.1-1.6 mJ m(-2). Deformation-induced LAKBs, the resultant redistribution of solute elements, and precipitated I-2 SFs, are proposed to be responsible for the high strength of extruded Mg alloys containing LPSO structures. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [51301177]; National Basic Research Program of China [2014CB921002]; Innovation Fund of IMR [SCJJ2013-PY-08, 2015-PY08]; Fund of SYNL [2015FP18] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78280]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Peng, Z. Z.,Shao, X. H.,Jin, Q. Q.,et al. Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg-Zn-Y-Zr alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,687:211-220. |
| APA | Peng, Z. Z.,Shao, X. H.,Jin, Q. Q.,Liu, J. F.,&Ma, X. L..(2017).Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg-Zn-Y-Zr alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,687,211-220. |
| MLA | Peng, Z. Z.,et al."Dislocation configuration and solute redistribution of low angle kink boundaries in an extruded Mg-Zn-Y-Zr alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 687(2017):211-220. |
入库方式： OAI收割
来源：金属研究所
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