胡勇,饶丽,黎秋萍

• 1:华东交通大学载运工具与装备教育部重点实验室

摘要(Abstract)：

研究了稀土Ce对AZ91D镁合金的显微组织、力学性能、腐蚀性能和磨损性能的影响。结果表明,向AZ91D镁合金中加入稀土Ce,出现了杆状化合物Al4Ce相,并提高了合金的室温力学性能。当稀土加入量为0.7%时,合金的抗拉强度和伸长率由117.4 MPa和4.0%提高至138.87 MPa和6.5%。进一步提高稀土含量,杆状化合物Al4Ce变得粗大,合金力学性能下降。AZ91D镁合金中加入稀土Ce可提高其耐蚀性,加入0.7%Ce的AZ91D镁合金的耐蚀性能提高了87%,当稀土Ce含量进一步提高时,AZ91D镁合金中的耐蚀性又变差。向AZ91D镁合金中加入稀土Ce,其耐磨性能也得到提高,当稀土Ce含量为1.0%时,合金耐磨性能最优,但只是略高于稀土Ce含量为0.7%时合金的耐磨性。综合本研究结果,稀土Ce的最佳加入量为0.7%。

关键词(KeyWords)： 稀土Ce;镁合金;微观组织;腐蚀性能;磨损性能

Abstract:

Keywords:

基金项目(Foundation): 载运工具与装备省部共建教育部重点实验室项目(华东交通大学);; 江西省教育厅项目(GJJ11094);; 江西省钨铜新材料重点实验室开放基金项目(2010-Wt-06)

作者(Author): 胡勇,饶丽,黎秋萍

DOI: 10.13289/j.issn.1009-6264.2014.04.023

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