| Fracture behavior of high strength Mg-Gd-Y-Zr magnesium alloy | |
| L. Gao; R. S. Chen; E. H. Han | |
| 2010 | |
| Source Publication | Transactions of Nonferrous Metals Society of China
 |
| ISSN | 1003-6326 |
| Volume | 20Issue:7Pages:1217-1221 |
| Abstract | 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. |
| description.department | [gao lei; chen rong-shi; han en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [gao lei] chinese acad sci, grad sch, beijing 100039, peoples r china.;han, eh (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;rongshichen@yahoo.com ehhan@imr.ac.cn |
| Keyword | 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 |
| URL | 查看原文 |
| WOS ID | WOS:000280747200007 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/31114 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation 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. |
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