Understanding the High Strength and Good Ductility in LPSO-Containing Mg Alloy Using Synchrotron X-ray Diffraction
文献类型：期刊论文
| 作者 | Wang, J; Wang, LY; Zhu, GM; Zhou, BJ; Ying, T; Zhang, XM; Huang, Q; Shen, Y; Zeng, XQ; Jiang, HY |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 49A期号:11页码:5382-5392 |
| 关键词 | STACKING-ORDERED STRUCTURES ROOM-TEMPERATURE DEFORMATION Y-ZN ALLOYS MECHANICAL-PROPERTIES TENSILE DEFORMATION MICROSTRUCTURAL EVOLUTION NEUTRON-DIFFRACTION MG97Y2ZN1 ALLOYS MAGNESIUM ALLOY EXTRUDED ALLOY |
| ISSN号 | 1073-5623 |
| DOI | 10.1007/s11661-018-4881-z |
| 文献子类 | 期刊论文 |
| 英文摘要 | Mg alloys containing long-period stacking-ordered (LPSO) phases often display excellent mechanical properties. The underlying mechanism is yet unclear. In this work, in situ synchrotron X-ray diffraction was employed to study tensile deformation of a Mg97Y2Zn alloy that contains 18R-type LPSO phase. From lattice strain measurement, it is found that the LPSO phase has a similar elastic modulus as Mg. After material yielding, lattice strain in the Mg phase decreased, while lattice strain in the LPSO phase increased further. By analyzing the lattice strain evolution of different Mg peaks, basal slip and deformation twinning are identified as the dominant deformation mechanisms. This finding is further confirmed by surface slip trace analysis using electron backscattered diffraction (EBSD). Additional analysis of diffraction peak broadening indicates a continuous increase of dislocation density during plastic deformation. Based on the above results, it can be concluded that the interdendritic LPSO phase behaves like a reinforcing phase that directly strengthens the material. The high tensile ductility of the material is attributed to the weak extrusion texture caused by the presence of interdendritic LPSO. In addition, small LPSO plates inside the Mg phase can serve as dislocation nucleation sites, which leads to a high work hardening rate in the material. (C) The Minerals, Metals & Materials Society and ASM International 2018 |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31163]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China 3.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China 4.Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai, Peoples R China 5.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, J,Wang, LY,Zhu, GM,et al. Understanding the High Strength and Good Ductility in LPSO-Containing Mg Alloy Using Synchrotron X-ray Diffraction[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2018,49A(11):5382-5392. |
| APA | Wang, J.,Wang, LY.,Zhu, GM.,Zhou, BJ.,Ying, T.,...&Jiang, HY.(2018).Understanding the High Strength and Good Ductility in LPSO-Containing Mg Alloy Using Synchrotron X-ray Diffraction.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,49A(11),5382-5392. |
| MLA | Wang, J,et al."Understanding the High Strength and Good Ductility in LPSO-Containing Mg Alloy Using Synchrotron X-ray Diffraction".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 49A.11(2018):5382-5392. |
入库方式： OAI收割
来源：上海应用物理研究所
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