摘要
研究了Mo添加对FeCoNiCrAl_(0.3)高熵合金组织的影响。分析了V元素对高熵合金FeCoNiCrMo_(0.5)Al_(0.3)Vx的组织和力学性能的影响。通过混合焓、混合熵、原子半径差、电负性、电子空位浓度以及晶格扭曲程度计算了FeCoNiCrMoVAl_(0.3)高熵合金相稳定性。结果表明:FeCoNiCrMo_(0.1)Al_(0.3)合金中Mo主要以固溶态的形式存在于合金中;而随Mo含量的增加,FCC基体中析出分布于枝晶间的(Cr,Mo)(Ni,Co)型σ相;V可进一步促进(Cr,V)型σ相的析出;高熵合金相稳定性的理论结果与试验结果吻合。
The effects of Mo addition on the microstructure of FeCoNiCrAl0.3 high entropy alloy were investigated. The cffccts of V clement on the microstructurc and properties of FcCoNiCrMo0.5Al0.3Vxhigh entropy alloy were analyzed .The phase stability of FeCoNiCrMoVAl0.3 high entropy alloy was calculated by mixing enthalpy, mixing entropy, atomic radius difference, clectronegativity, electron vacancy concentration and lattice distortion degree. The results show that Mo clement in FcCoNiCrMoo.iAlo.3 alloy exists in the form of solid solution. With Mo content increasing, σ phase- richcd in （Cr,Mo）（Ni,Co） appears in the interdcndrite separating out from FCC matrix. V clement can furtherly promote the precipitation of σ phase- richcd in （Cr,V）. The thcoretical results of the phase stability of FcCoNiCrMoVAIo.3 high entropy alloy agree well with the experiment results.
出处
《热加工工艺》
CSCD
北大核心
2017年第8期54-57,60,共5页
Hot Working Technology
基金
国家自然科学基金项目(51301063)
河南省教育厅自然科学指导性计划项目(12B430008)
河南理工大学引进人才基金项目(Y2009-1)
作者简介
钱天宝（1990-），男，河南信阳人，硕士，主要研究方向为高熵合金凝固技术：电话：15039153512；Email：715708751@qq．com
通讯作者：崔红保（1978-），副教授，博士，主要从事高性能金属结构材料和凝固技术的教学与研究工作：电话：0391-3986921；E-mail：cuihongbao@hpu．edu．cn．
