| 热处理对砂型铸造Mg-4Y-2Nd-1Gd-0.4Zr镁合金显微组织和力学性能的影响(英文) |
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| 引用本文： | 刘志杰,吴国华,刘文才,庞松,丁文江.热处理对砂型铸造Mg-4Y-2Nd-1Gd-0.4Zr镁合金显微组织和力学性能的影响(英文)[J].中国有色金属学会会刊,2012,22(7):1540-1548. |
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| 作者姓名： | 刘志杰 吴国华 刘文才 庞松 丁文江 |
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| 作者单位： | 上海交通大学轻合金精密成型国家工程研究中心;上海交通大学金属基复合材料国家重点实验室 |
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| 基金项目： | Project(0502)supported by the Aerospace Science and Technology Innovation Fund of China Aerospace Science and Technology Corporation;Project(2007CB613701)supported by the National Basic Research Program of China;Project(2009AA033501)supported by the National High-tech Research and Development Program of China |
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| 摘 要： | 研究热处理工艺对砂型铸造Mg-4Y-2Nd-1Gd-0.4Zr镁合金显微组织和力学性能的影响,分析不同热处理条件下合金的断裂机制,获得最佳热处理工艺。结果表明:Mg–4Y–2Nd–1Gd–0.4Zr合金的最佳T4和T6热处理工艺分别为525°C,8 h和(525°C,8 h)+(225°C,16 h)。在最佳T6热处理条件下,Mg-4Y-2Nd-1Gd-0.4Zr合金的硬度、屈服强度、抗拉强度和伸长率分别为HV91、180 MPa、297 MPa和7.4%。此外,不同状态的Mg-4Y-2Nd-1Gd-0.4Zr镁合金也显示出不同的拉伸断裂方式。
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| 关 键 词： | Mg-4Y-2Nd-1Gd-0.4Zr砂型铸造热处理力学性能 |
| 收稿时间： | 30 August 2011 |
Effect of heat treatment on microstructures and mechanical properties of sand-cast Mg-4Y-2Nd-1Gd-0.4Zr magnesium alloy |
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| LIU Zhi-jie,WU Guo-hua,LIU Wen-cai,PANG Song,DING Wen-jiang.Effect of heat treatment on microstructures and mechanical properties of sand-cast Mg-4Y-2Nd-1Gd-0.4Zr magnesium alloy[J].Transactions of Nonferrous Metals Society of China,2012,22(7):1540-1548. |
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| Authors: | LIU Zhi-jie WU Guo-hua LIU Wen-cai PANG Song DING Wen-jiang |
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| Affiliation: | 1,2 1.National Engineering Research Center of Light Alloy Net Forming,School of Materials Science and Engineering, Shanghai Jiao Tong University,Shanghai 200240,China; 2.Key State Laboratory of Metal Matrix Composite,Shanghai Jiao Tong University,Shanghai 200240,China |
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| Abstract: | Influence of heat treatment on the microstructures and mechanical properties of sand-cast Mg-4Y-2Nd-1Gd-0.4Zr magnesium alloy was investigated,and the tensile fracture mechanisms of the studied alloys under different conditions were also discussed.The results show that the optimum T4 and T6 heat treatment conditions for the as-cast Mg-4Y-2Nd-1Gd-0.4Zr alloy are 525°C,8 h and(525°C,8 h)+(225°C,16 h),respectively,with regard to the microstructure observation,DSC heating curve and mechanical properties.The hardness,yield strength,ultimate tensile strength and elongation of the Mg-4Y-2Nd-1Gd-0.4Zr alloy treated by optimum T6 heat treatment are HV91,180 MPa,297 MPa and 7.4%,respectively.Moreover,the Mg-4Y-2Nd-1Gd-0.4Zr alloys under different heat treatment conditions exhibit different tensile fracture modes. |
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| Keywords: | Mg-4Y-2Nd-1Gd-0 4Zr alloy sand-casting heat treatment mechanical property |
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