徐玉棱,韩福年,王文礼,顾军,张明,张以胜

• 1:宝玛克(合肥)科技有限公司
• 2:西安建筑科技大学冶金工程学院

摘要(Abstract)：

研究了不同含量的稀土元素铈(Ce)对含钙(Ca)的镁铝锌合金(Mg-3Al-Zn-0.2Ca)显微组织与力学性能的影响。结果表明:铸态Mg-3Al-Zn-0.2Ca合金显微组织由α-Mg基体、β-Mg_(17)Al_(12)相和Al_2Ca相组成;加入Ce元素后,合金中的β-Mg_(17)Al_(12)相数量减少,组织细化,并形成Al_(11)Ce_3新相,同时Al_2Ca相在晶界处以片层状分布,Al_(11)Ce_3相在α-Mg基体和晶界处均有析出并呈针状;随着Ce元素含量的增加,Al_2Ca相减少,由较粗的片层状变为短条状;含0.12mass%Ce的合金在室温下表现出最优的综合力学性能,极限抗拉强度为152MPa,抗压强度为335MPa,伸长率为7.8%,硬度为83.86HV0.1。

关键词(KeyWords)： Mg-3Al-Zn-0.2Ca合金;Ce元素;Ca元素;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 徐玉棱,韩福年,王文礼,顾军,张明,张以胜

DOI: 10.13289/j.issn.1009-6264.2024-0514

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