通过性能测试和SEM、TEM形貌观察,研究了Sb对AZ31合金组织和力学性能的影响.结果表明:AZ31合金中加入Sb,能有效地改善合金的组织形貌,使析出相体积分数达到约20%,可显著提高合金的室温和高温强度.合金的组织结构是由富Al的α-Mg基体和高体积分数且弥散分布的细小析出相所组成,其中含Sb合金中析出的高熔点、弥散分布的Mg3Sb2 相具有颗粒细小、热稳定性好等特点,可有效阻碍位错的运动,是改善AZ31合金高温力学性能的主要原因.
参考文献
| [1] | MordikeL;Ebert T .Magnesiumproperties-applications-potential[J].Materials Science and Engineering,2001,302:37-45. |
| [2] | NinomiyaR.Smithells metals reference Book[M].London:Butterworths,1983:453. |
| [3] | YuanGY;Liu Z L;Wang Q D et al.MicrostruturerefinementofMg-Al-Zn-Sialloys[J].Materials Letters,2002,56:53-58. |
| [4] | Yuan Guangyin;Sun Yangshan .EFFECTS OF Sb ADDITION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AZ91 MAGNESIUM ALLOY[J].Scripta materialia,2000(11):1009-1013. |
| [5] | Yuan Guangyin;Sun Yangshan;Ding Wenjiang .Effects of bismuth and antimony additions on the microstructure and mechanical properties of AZ91 magnesium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(1/2):38-44. |
| [6] | ourgeoisL;Muddle B C;Nie J F .StudyofprecipiattioninagedbinaryMg-AlandternaryMg-Al-ZnAlloysusingALNMRspectroscopy[J].Acta Materialia,2001,49:2701. |
| [7] | HiroakiOkamoto.Phase Diagrams for Binary Alloys[M].USA:PublishedbyASMInternational,2000:553. |
| [8] | RAYNORGV.The physical metallurgy of magnesium and its alloys[M].UK:PergamonPress,1959:103. |
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