کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1627080 | 1516446 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation behavior of Mg-Zn-Gd-based alloys reinforced with quasicrystal and Laves phases at elevated temperatures
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Deformation behavior of Mg-Zn-Gd-based alloys reinforced with quasicrystal and Laves phases at elevated temperatures Deformation behavior of Mg-Zn-Gd-based alloys reinforced with quasicrystal and Laves phases at elevated temperatures](/preview/png/1627080.png)
چکیده انگلیسی
Mg-Zn-Gd and Mg-Zn-Gd-Cu alloys, reinforced with quasicrystal (I-phase) and Laves phases, have been produced by extrusion process. The deformation behavior of these two alloys at room temperature and at elevated temperatures was investigated, respectively. The Mg-Zn-Gd alloy has high UTS of 305Â MPa and elongation of 14.6% due to the strengthening effect of I-phase, while Mg-Zn-Gd-Cu alloy with Laves phases has higher yield stress of 217Â MPa due to more strengthening particles and lower elongation of 11.9% resulting from the low content of I-phase and low symmetry of Laves phase due to which it cleaves easily (while the I-phase has a very high symmetry and therefore isotropic in nature). At high temperatures, Mg-Zn-Gd alloy shows large strain due to the excellent plastic compatibility coming from low interfacial energy of I-phase/matrix; Mg-Zn-Gd-Cu alloy has higher level of flow stress, strain exponent and more stable microstructure than Mg-Zn-Gd alloy due to better heat-resistance supplied by collaboration of Laves phases and quasicrystal phase, which can provide more effective pinning effect and suppress grain growth during deformation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 427, Issues 1â2, 16 January 2007, Pages 160-165
Journal: Journal of Alloys and Compounds - Volume 427, Issues 1â2, 16 January 2007, Pages 160-165
نویسندگان
Yong Liu, Guangyin Yuan, Wenjiang Ding, Cheng Lu,