| Mg—Al—C中间合金对AZ91镁合金组织和性能的影响 |
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| 引用本文： | 黎业生,付群强,董定乾,李洪.Mg—Al—C中间合金对AZ91镁合金组织和性能的影响[J].材料热处理学报,2007,28(B08):25-28. |
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| 作者姓名： | 黎业生 付群强 董定乾 李洪 |
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| 作者单位： | 江西理工大学材化学院,江西赣州341000 |
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| 基金项目： | 江西省教育厅科技攻关项目（2004赣财教第18号）和江西省科技厅科技计划项目（赣财教字[2006]188号） |
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| 摘 要： | 通过真空烧结制备出Mg—Al-C中间合金，发现该合金可以有效地细化Mg-Al系AZ91合金的晶粒，细化后的AZ91合金力学性能显著提高，粗大且易于聚集成团的Mg17Al12相得以消除；分析认为其细化机制是在镁合金熔体中形成了大量的结晶形核质点Al4C3或Al-C-O化合物。
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| 关 键 词： | 镁合金 晶粒细化剂 Mg—Al-C中间合金 细化机理 |
Effect of Mg-AI-C master alloy on the microstructure and mechanical properties of AZ91 Magnesium alloy |
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| LI Ye-sheng, FU Qun-qiang, DONG Ding-qian, LI Hong.Effect of Mg-AI-C master alloy on the microstructure and mechanical properties of AZ91 Magnesium alloy[J].Transactions of Materials and Heat Treatment,2007,28(B08):25-28. |
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| Authors: | LI Ye-sheng FU Qun-qiang DONG Ding-qian LI Hong |
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| Affiliation: | School of Materials and Chemical Engineering, Jiangxi University of Science and Technology, Gangzhou 341000, China |
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| Abstract: | A special Mg-Al-C master alloy was prepared by vacuum sintering to refine the grains of Mg-Al alloys. The results show that the Mg-Al-C master alloy has a remarkable refining effect on the grain size of AZ91 alloy. The mechanical properties of AZ91 alloy enhanced greatly after the addition of Mg-Al-C master alloy, coarse and easy-assembling Mg17Al12 phase disappeared. The refinement mechanism attributes to be the formation of large amount of nucleus of AhC3 or Al-C-O compounds in the solution of magnesium alloy. |
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| Keywords: | magnesium alloys grain refiner Mg-Al-C master alloy refinement mechanism |
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