向硕,张雷,刘学,乐国敏,戴晓军,李强,李晋锋

• 1:新疆大学物理科学与技术学院
• 2:中国工程物理研究院材料研究所
• 3:中国工程物理研究院化工材料研究所

摘要(Abstract)：

为了研究激光熔化沉积工艺对CrMnFeCoNi高熵合金微观组织与力学性能的影响,采用单向扫描和双向扫描两种沉积路线,分别在1000、1200和1400 W功率下制备出CrMnFeCoNi高熵合金。通过X射线衍射(XRD)、光学显微镜和力学拉伸实验等分析手段对CrMnFeCoNi高熵合金相组成、微观组织及力学性能进行了研究。研究结果表明:不同工艺参数条件下制备得到的CrMnFeCoNi高熵合金均为FCC单相固溶体结构;通过控制激光沉积功率,可调控CrMnFeCoNi高熵合金组织结构中柱状晶与等轴晶的比例;双向扫描工艺条件下制备得到的CrMnFeCoNi高熵合金具有更加均匀的组织以及更为优异的力学性能。

关键词(KeyWords)： 高熵合金;激光熔化沉积;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 四川省科技计划项目(2018G20146);; 攀枝花财政科技专项资金项目(2017CY-G-21)

作者(Author): 向硕,张雷,刘学,乐国敏,戴晓军,李强,李晋锋

DOI: 10.13289/j.issn.1009-6264.2018-0259

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