| 稀土元素对过共晶铝硅合金的变质机理 |
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| 引用本文： | 张瑜,王宇鑫,廖文俊,王华钰,杨颖,严彪.稀土元素对过共晶铝硅合金的变质机理[J].金属功能材料,2010,17(3):86-90. |
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| 作者姓名： | 张瑜 王宇鑫 廖文俊 王华钰 杨颖 严彪 |
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| 作者单位： | 同济大学材料科学与工程学院,上海,200092;上海市金属功能材料开发应用重点实验室,上海,200092 |
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| 基金项目： | 国家973项目子课题，上海市科学技术发展基金，上海市纳米专项 |
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| 摘 要： | 过共晶铝硅合金具有很多优良的特性,是一种极有发展前途的结构材料,但合金中粗大的初晶硅和细长的共晶硅组织会影响其力学性能,研究表明添加稀土元素可以有效的细化初晶硅和共晶硅。本文总结了目前几种主要的变质理论,并对其以后的研究和发展方向进行了展望。
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| 关 键 词： | 过共晶铝硅合金 稀土 调质处理 变质机理 |
Modification Mechanism of RE on Hypereutectic Al-Si Alloy |
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| ZHANG Yu,WANG Yu-xin,LIAO Wen-jun,WANG Hua-yu,YANG Ying,YAN Biao.Modification Mechanism of RE on Hypereutectic Al-Si Alloy[J].Metallic Functional Materials,2010,17(3):86-90. |
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| Authors: | ZHANG Yu WANG Yu-xin LIAO Wen-jun WANG Hua-yu YANG Ying YAN Biao |
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| Affiliation: | 1.School of Materials Science and Engineering,Tongji University,Shanghai 200092,China;2.Shanghai Key Lab.of D＆A for Metal-Functional Materials,Shanghai 200092,China) |
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| Abstract: | The hypereutectic Al-Si alloy is a kind of promising structural material for its excellent properties.The mechanical behavior of unmodified hypereutectic Al-Si alloy is often worse due to the presence of coarse primary silicon and long needlelike eutectic silicon.Former study shows that hypereutectic Al-Si alloy can be refined by the addition of rare earth modificator.In this paper,the common modification mechanisms were summarized.The developing situation and future development prospects were given as well. |
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| Keywords: | hypereutectic Al-Si alloy rare earths modified treatment modification mechanism |
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