| SiC对等温热处理AZ91D镁合金组织的影响 |
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| 引用本文： | 王瑞权,姜向东. SiC对等温热处理AZ91D镁合金组织的影响[J]. 广东有色金属学报, 2009, 0(4) |
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| 作者姓名： | 王瑞权 姜向东 |
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| 作者单位： | 兰州理工大学材料科学与工程学院; |
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| 摘 要： | 对经SiC变质处理的AZ91D镁合金的铸态组织及其在半固态等温热处理过程中组织的变化进行了研究.结果表明:该合金的微观组织在等温热处理过程中经历了四个阶段,初期的快速粗化阶段、组织分离阶段、晶粒球状化阶段和最后的粗化阶段;随着等温时间的延长,未变质处理的镁合金的组织由树枝晶状变成近球状,经变质处理的镁合金组织由等轴晶变成细小的球状,继续延长等温时间,二者的组织均逐渐地合并长大.
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| 关 键 词： | AZ91D合金 SiC 变质处理 等温热处理 |
Effects of SiC on microstructure of AZ91D alloy during isothermal heat treatment |
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| WANG Rui-quan,JIANG Xiang-dong. Effects of SiC on microstructure of AZ91D alloy during isothermal heat treatment[J]. Journal of Guangdong Non-Ferrous Metals, 2009, 0(4) |
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| Authors: | WANG Rui-quan JIANG Xiang-dong |
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| Affiliation: | WANG Rui-quan,JIANG Xiang-dong (School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | The as-cast structure of Mg-alloy AZ91D treated with modifier SiC and the structural evolution during semisolid isothermal heat treatment were investigated.The results show that the microstructure of AZ91D alloy experienced four stages during isothermal heat treatment process:the initial rapid coarsening, structure separation,grain spheroidization and the final coarsening.With the extension of isothermal heat treatment,the microstructure of non-modified magnesium alloy will change from dendrite to quasi-sph... |
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| Keywords: | AZ91D alloy SiC modification isothermal heat treatment |
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