赫国强,董晟全,梁艳峰,何子博,徐景,李娟

• 1:西安工业大学材料与化工学院

摘要(Abstract)：

采用光学显微镜(OM)、扫描电镜(SEM)和能谱分析(EDS)、X射线衍射仪(XRD)等研究了稀土元素Y、Ce加入量对铸造Mg-Al-Zn合金组织和力学性能的影响,以期制备具有较高综合力学性能的稀土镁合金。结果表明:稀土元素Y和Ce的添加能够有效地细化镁合金的组织,β-Mg_(17)Al_(12)相由连续或半连续网状分布转变为弥散分布,生成的新稀土相Al_2Ce和Al_2Y有效地提高了铸造Mg-Al-Zn合金的力学性能,当合金中稀土加入量为0.6 mass%Y+1.2 mass%Ce时,其抗拉强度和断后伸长率分别为234 MPa和7.2%。

关键词(KeyWords)： 稀土元素;铸造Mg-Al-Zn合金;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 镁合金研制与开发(0103204040002)

作者(Author): 赫国强,董晟全,梁艳峰,何子博,徐景,李娟

DOI: 10.13289/j.issn.1009-6264.2018-0430

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