Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy
文献类型：期刊论文
| 作者 | L. Gao ; R. S. Chen ; E. H. Han |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:7页码:1217-1221 |
| 关键词 | magnesium alloy rare earth Mg-Gd-Y alloys mechanical properties fracture behavior heat treatment mechanical-properties wt.percent alloy zn additions microstructures 250-degrees-c precipitation |
| ISSN号 | 1003-6326 |
| 中文摘要 | The fracture behavior of a permanent mould casting Mg-8.57Gd-3.72Y-0.54Zr (mass fraction, %) (GW94) alloy was investigated under different thermal conditions, including as-cast, solution-treated, peak-aged, and over-aged states. Scanning electron microscopy (SEM) and optical microscopy (OM) were employed to examine the crack nucleation and fracture model. The results indicate that the GW94 alloy shows different behaviors of crack initiation and fracture under different thermal conditions. During tensile test at room temperature, the fracture model of the as-cast GW94 alloy is quasi-cleavage, while that of the solution-treated alloy is transgranular cleavage. It is a mixed pattern of transgranular and intergranular fracture for both the aged conditions. Large cavities formed at grain boundaries are observed in the peak-aged sample tested at 300 degrees C, corresponding to the intergranular fracture. Localized plastic deformation at grain boundaries is also observed and corresponds to the high elongation at 300 degrees C. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31114]  |
| 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 | L. Gao,R. S. Chen,E. H. Han. Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy[J]. Transactions of Nonferrous Metals Society of China,2010,20(7):1217-1221. |
| APA | L. Gao,R. S. Chen,&E. H. Han.(2010).Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy.Transactions of Nonferrous Metals Society of China,20(7),1217-1221. |
| MLA | L. Gao,et al."Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy".Transactions of Nonferrous Metals Society of China 20.7(2010):1217-1221. |
入库方式： OAI收割
来源：金属研究所
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