| Deformation Localization and Shear Fracture of a Rapidly Solidified Al-Fe-V-Si Alloy at Elevated Temperature |
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| 引用本文： | Yongbo XU. Deformation Localization and Shear Fracture of a Rapidly Solidified Al-Fe-V-Si Alloy at Elevated Temperature[J]. 材料科学技术学报, 2007, 23(2): 237-241 |
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| 作者姓名： | Yongbo XU |
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| 作者单位： | Shenyang National Laboratory for Materials Sciences, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China |
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| 摘 要： | The tensile and fatigue behavior of a dispersoid strengthened, powder metallurgy Al-Fe-V-Si alloy at ambient and elevated temperatures was investigated. The results show that the strength and ductility of the alloy decrease significantly with increasing temperature and decreasing strain rate. Micro-structural examinations reveal that this change in mechanical behavior with increasing temperature is related to the mode of deformation of the alloy. Further observations show that localized shear deformation is responsible for the losses in both strength and ductility of the alloy at elevated temperature.
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| 关 键 词： | 高温 快速凝固 AL-FE-V-SI合金 分散体 局部剪切形变 位错 剪切断裂 |
| 收稿时间： | 2006-07-10 |
| 修稿时间： | 2006-09-05 |
Deformation Localization and Shear Fracture of a Rapidly Solidified Al-Fe-V-Si Alloy at Elevated emperature |
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| Yongbo XU. Deformation Localization and Shear Fracture of a Rapidly Solidified Al-Fe-V-Si Alloy at Elevated emperature[J]. Journal of Materials Science & Technology, 2007, 23(2): 237-241 |
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| Authors: | Yongbo XU |
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| Affiliation: | Shenyang National Laboratory for Materials Sciences, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | The tensile and fatigue behavior of a dispersoid strengthened, powder metallurgy Al-Fe-V-Si alloy at ambient and elevated temperatures was investigated. The results show that the strength and ductility of the alloy decrease significantly with increasing temperature and decreasing strain rate. Micro-structural examinations reveal that this change in mechanical behavior with increasing temperature is related to the mode of deformation of the alloy. Further observations show that localized shear deformation is responsible for the losses in both strength and ductility of the alloy at elevated temperature. |
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| Keywords: | Al-Fe-V-Si alloy Dispersoids Localized shear deformation Shear fracture Dislocations |
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