| Mg-Zn-Al合金的组织稳定性与力学性能 |
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| 引用本文： | 陈吉华,陈振华,严红革,刘强,陈劲松.Mg-Zn-Al合金的组织稳定性与力学性能[J].湖南大学学报(自然科学版),2007,34(1):47-51. |
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| 作者姓名： | 陈吉华 陈振华 严红革 刘强 陈劲松 |
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| 作者单位： | 湖南大学,材料科学与工程学院,湖南,长沙,410082 |
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| 基金项目： | 湖南省科技厅项目(05GK1006-1) |
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| 摘 要： | 采用金相分析、DSC分析和拉伸测试等手段研究了铝含量对Mg-6Zn合金显微组织、凝固特性和力学性能的影响.结果表明,Mg-6Zn-2Al合金晶粒相对细小,具有最佳的强度与塑性组合;Mg-6Zn-6Al合金中晶界处存在接近连续分布的粗大鱼骨状金属间化合物Mg17Al12相,导致合金抗拉强度和塑性下降.长时间退火试验表明,Mg-6Zn-2Al具有较高的组织稳定性.因此,Mg-6Zn-2Al合金是Mg-Zn-Al系合金的一个较佳成分组合.
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| 关 键 词： | 镁合金 凝固 组织稳定性 力学性能 |
| 文章编号： | 1000-2472（2007）01-0047-05 |
| 修稿时间： | 2005-10-22 |
Microstructural Stability and Mechanical Properties of Mg-Zn-Al Alloys |
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| CHEN Ji-hu,CHEN Zhen-hu,YAN Hong-ge,LIU Qiang,CHEN Jing-song.Microstructural Stability and Mechanical Properties of Mg-Zn-Al Alloys[J].Journal of Hunan University(Naturnal Science),2007,34(1):47-51. |
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| Authors: | CHEN Ji-hu CHEN Zhen-hu YAN Hong-ge LIU Qiang CHEN Jing-song |
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| Institution: | College of Materials Science and Engineering, Hunan Univ, Changsha, Hunan 410082, China |
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| Abstract: | The effects of the content of Al on the microstructure,solidification behavior and mechanical properties of the Mg-6Zn system were investigated by metallograph,DSC and tensile tests.The as-cast Mg-6Zn-2Al alloy was characteristic of the best balance between strength and ductility,while the Mg-6Zn-6Al alloy possessed inferior tensile strength and ductility due to the presence of the coarse,approximately continuously distributed Mg_(17)Al_(12).Moreover,the Mg-6Zn-2Al alloy exhibited higher microstructural stability.Therefore,magnesium alloy containing 6%Zn and 2%Al(in weight) is likely to be one of the best compositions of the Mg-Zn-Al system. |
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| Keywords: | magnesium alloy solidification microstructural stability mechanical property |
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