付朝政,毛一点,何焱,刘茵莱,王书亮

• 1:贵州航天新力科技有限公司
• 2:西南石油大学新能源与材料学院
• 3:四川长宁天然气开发有限责任公司

摘要(Abstract)：

在各元素成相作用和降低成本的基础上，利用机械球磨与放电等离子烧结的方法首先制备了非等原子比Fe_(38)Cr_(15)Co_7Ni_(30)V_(10)高熵合金，随后添加Mo元素制备了(Fe_(38)Cr_(15)Co_7Ni_(30)V_(10))_(100-x)Mo_x(x=2、4、6、8 at%)高熵合金，研究了Mo元素添加对Fe_(38)Cr_(15)Co_7Ni_(30)V_(10)高熵合金组织与力学性能的影响。结果表明：Fe_(38)Cr_(15)Co_7Ni_(30)V_(10)高熵合金由单相FCC固溶体组成，在FCC基体相中存在部分富V的FCC相，显微硬度为(184.8±24.3) HV0.3,屈服强度为(712±5) MPa,压缩应变率大于50%;随着Mo元素的添加，(Fe_(38)Cr_(15)Co_7Ni_(30)V_(10))_(100-x)Mo_x高熵合金的相组成仍主要为FCC相，但析出了富Cr的σ相和富Mo的μ相，σ相和μ相作为硬脆相，显著提高了合金的硬度及强度，但延展性有所降低；当Mo元素为8 at%时，合金的综合性能较佳，其硬度、屈服强度、抗拉强度和应变率分别为(269.2±7.1) HV0.3、(1019±5) MPa、(1904±2) MPa和(37.0±0.6)%。

关键词(KeyWords)： 高熵合金;Mo;机械球磨;放电等离子烧结;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 付朝政,毛一点,何焱,刘茵莱,王书亮

DOI: 10.13289/j.issn.1009-6264.2025-zt11

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