刘钰鑫,蒲永亮,刘丛,丁静,朱胜利

• 1:兰州交通大学材料科学与工程学院
• 2:天津大学材料科学与工程学院
• 3:天津市材料复合与功能化重点实验室

摘要(Abstract)：

采用电弧熔炼-铜辊甩带法制备Zr_(50)Al_5Ni_(15-x)Cu_(15)Co_(15+x)(x=2、4和6 at%)非晶合金条带，使用X射线衍射(XRD)、差示扫描量热仪(DSC)、扫描电镜(SEM)、透射电镜(TEM)及万能力学试验机等研究了样品厚度、合金成分以及热处理工艺对其微观结构、相组成、热稳定性和拉伸力学性能的影响。结果表明：Zr_(50)Al_5Ni_(15-x)Cu_(15)Co_(15+x)(x=2,4,6 at%)合金条带为非晶态，退火后非晶基体上析出简单立方结构的CoZr和CuZr纳米晶。在相同样品厚度下，随着Ni含量的减小，合金的室温拉伸塑性增加；随着条带厚度的增加，合金的室温拉伸塑性逐渐增加。其中，51μm厚的Zr_(50)Al_5Ni_9Cu_(15)Co_(21)合金条带经513℃退火1800 s后，室温拉伸塑性最高可达7.3%,抗拉强度为370.6 MPa。

关键词(KeyWords)： Zr基非晶合金;组织;热稳定性;力学性能

Abstract:

Keywords:

基金项目(Foundation): 甘肃省自然科学基金(20JR10RA256);; 兰州交通大学-天津大学联合创新基金(2021051);; 兰州交通大学青年科学基金(220278)

作者(Author): 刘钰鑫,蒲永亮,刘丛,丁静,朱胜利

DOI: 10.13289/j.issn.1009-6264.2022-0515

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