冯正中,顾晨曦,王欣可,杨林,王璐,乙姣姣

• 1:江苏理工学院机械工程学院先进多组元材料实验室
• 2:江苏理工学院材料工程学院

摘要(Abstract)：

采用真空电弧炉熔炼和铜模吸铸法制备了CoFeNiVTi高熵合金柱状试样，并对其在氩气保护条件下进行了800℃退火20 h的处理。利用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱仪(EDS)和压缩实验等研究了铸态和退火态CoFeNiVTi合金的显微组织和力学性能。结果表明：铸态合金为单相BCC固溶体结构，显微组织呈现典型的柱状晶特征，合金元素均匀分布；退火态合金由BCC基体和金属间化合物Ni_2V_3型的σ析出相构成，σ析出相具有明显的取向特征，呈粗大板条状和细小针状。与铸态合金相比，由于σ析出相的存在，退火后合金的断裂强度有所下降，但仍高达2.5 GPa,硬度则显著提高至800 HV0.2。

关键词(KeyWords)： 高熵合金;退火;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 常州市科技项目应用基础研究计划(CJ20220057,CJ20210065,CQ20210086);; 江苏理工学院研究生实践创新计划项目(XSJCX22＿03);江苏理工学院大学生创新训练计划项目(KYX22028);; 江苏省研究生科研与实践创新计划项目(SJCX22＿1464)

作者(Author): 冯正中,顾晨曦,王欣可,杨林,王璐,乙姣姣

DOI: 10.13289/j.issn.1009-6264.2023-0101

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