| Al4C3对AM60A镁合金组织和性能的影响 |
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| 引用本文： | 陈欣,秦建军,欧耀辉,陈阳,孙伟.Al4C3对AM60A镁合金组织和性能的影响[J].铸造,2012,61(2):203-207. |
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| 作者姓名： | 陈欣 秦建军 欧耀辉 陈阳 孙伟 |
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| 作者单位： | 1. 三一重工股份有限公司,湖南长沙,410100
2. 武汉理工大学材料学院,湖北武汉,430070 |
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| 摘 要： | 采用光学显微镜(OM)、扫描电镜(SEM)及能谱分析(EDS)等测试手段研究了不同含量的Al4C3对AM60A镁合金组织和性能的影响.结果表明,Al4C3的加入可以显著细化AM60A镁合金的晶粒；当其含量为0.5％时,晶粒最为细小,合金的强韧性与耐腐蚀性能得到最大改善.通过能谱分析及面错配度的计算证实:Al4C3可作为初生α-Mg的良好异质核心,但当Al4C3的加入量超过一定范围(大于0.5％～0.7％)时,大量的Al4C3生团聚和沉淀,造成晶粒细化效果下降.
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| 关 键 词： | AM60A镁合金 Al4C3 晶粒细化 |
Effect of Al4C3 on Microstructure and Properties of AM60A Magnesium Alloy |
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| CHEN Xin
,
QIN Jian-jun
,
OU Yao-hui
,
CHEN Yang
,
SUN Wei.Effect of Al4C3 on Microstructure and Properties of AM60A Magnesium Alloy[J].Foundry,2012,61(2):203-207. |
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| Authors: | CHEN Xin QIN Jian-jun OU Yao-hui CHEN Yang SUN Wei |
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| Affiliation: | 1.Sany Heavy Industry Co.,Ltd.,Changsha 410100,Hunan,China; 2.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China) |
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| Abstract: | The microstructures and properties of AM60A magnesium alloy with different content of Al4C3 were studied using the optical microscope(OM),scanning electron microscope(SEM) and energy-dispersive X-ray spectroscopy(EDS).It was found that the addition of Al4C3 can promote the refinement of AM60A magnesium alloy.A best refining result can be gained when 0.5 wt% Al4C3 was added,and the best mechanical properties and corrosion resistance of the alloy can be reached.Based on the calculation of the planar disregistry between Al4C3 and α-Mg,Al4C3 particles can act as the heterogeneous nucleus of primary α-Mg phase.But when the addition amount of Al4C3 is over the range of 0.5% to 0.7%,the agglomeration and precipitation of Al4C3 can decrease the grain refinement effect. |
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| Keywords: | AM60A magnesium alloy Al4C3 grain refinement |
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