期刊论文

Microstructure of CoCrFeNiTiCuMo_xV_x High Entropy Alloy Powder Prepared by Mechanical Alloying

中文

机械工程材料

1000-3738

2020

44

10

22-27

10.11973/jxgccl202010005

2019JJ50524:湖南省自然科学基金 2019-JSKSSYS-009:金属矿山安全与健康国家重点实验室开放基金 2017KJ293:衡阳市科技局项目 :湖南省大学生研究性学习和创新性实验计划

本校为第一机构

采用高能行星式球磨机对CoCrFeNiTiCuMo_xV_x(x=0.5,1.0,1.5,2.0,原子比)粉末进行机械合金化制备高熵合金粉末,利用X射线衍射、扫描电镜、透射电镜研究了钼和钒含量对合金粉末物相组成、晶粒尺寸、晶格应变的影响。结果表明:高能球磨后,纯金属相的衍射峰消失,得到了BCC+FCC双相结构的合金粉末;随着钼和钒含量的增加,BCC相含量增加,FCC相减少;合金粉末颗粒的尺寸在100~200 nm,颗粒呈扁平片状,随着钼和钒含量的增加,合金粉末的晶粒尺寸减小,晶格应变增大。

CoCrFeNiTiCuMo_xV_x(x=0.5,1.0,1.5,2.0,atomic ratio)powder was mechanically alloyed in a high-energy planetary ball mill to prepare high entropy alloy powder,and influence of molybdenum and vanadium content on the phase composition,grain size and lattice strain of the alloy powder was studied by X-ray diffraction, scanning electron microscopy and transmission electron microscopy.The results show that the diffraction peaks of pure metal phases disappeared,and the alloy powder with a dual-phase structure of BCC+FCC was obtained after high-energy ball milling.The content of BCC phase increased,FCC...