机械合金化制备CoCrFeNiTiCuMoxVx高熵合金粉末的显微组织
Microstructure of CoCrFeNiTiCuMoxVx High Entropy Alloy PowderPrepared by Mechanical Alloying
摘 要
采用高能行星式球磨机对CoCrFeNiTiCuMoxVx（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。
高熵合金粉末
物相组成
晶粒尺寸
晶格应变
mechanical alloying
high entropy alloy powder
phase composition
grain size
lattice strain
Abstract
CoCrFeNiTiCuMoxVx(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 phase decreased with the increase of molybdenum and vanadium content. The alloy powder particle size was between 100-200 nm, and the particles were flat. The grain size of the alloy powder decreased and the lattice strain increased as the content of molybdenum and vanadium increased.
中图分类号 TB31 DOI 10.11973/jxgccl202010005
所属栏目 试验研究
基金项目 湖南省自然科学基金资助项目（2019JJ50524）；金属矿山安全与健康国家重点实验室开放基金资助项目（2019-JSKSSYS-009）；衡阳市科技局项目（2017KJ293）；湖南省大学生研究性学习和创新性实验计划项目
收稿日期 2019/8/14
修改稿日期 2020/7/22
网络出版日期
作者单位点击查看
备注周娟(1982-),女,湖南湘乡人,讲师,博士
引用该论文: ZHOU Juan,FAN Xiangfang,CHEN Yong,GOU Yi,LI Yongqiao. Microstructure of CoCrFeNiTiCuMoxVx High Entropy Alloy PowderPrepared by Mechanical Alloying[J]. Materials for mechancial engineering, 2020, 44(10): 22～27
周娟,樊湘芳,陈勇,苟毅,李永峭. 机械合金化制备CoCrFeNiTiCuMoxVx高熵合金粉末的显微组织[J]. 机械工程材料, 2020, 44(10): 22～27
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【2】CHUANG M H,TSAI M H,WANG W R,et al.Microstructure and wear behavior of AlxCo1.5CrFeNi1.5Ti<i>y high-entropy alloys[J].Acta Materialia,2011,59(16):6308-6317.
【3】ZOU Y,MA H,SPOLENAK R.Ultrastrong ductile and stable high-entropy alloys at small scales[J].Nature Communications, 2015,6:7748.
【4】WU Y D,CAI Y H,WANG T,et al.A refractory Hf25Nb25Ti25Zr25 high-entropy alloy with excellent structural stability and tensile properties[J].Materials Letters, 2014,130:277-280.
【5】DENG Y,TASAN C C,PRADEEP K G,et al.Design of a twinning-induced plasticity high entropy alloy[J].Acta Materialia, 2015,94:124-133.
【6】LI D Y,LI C X,FENG T,et al.High-entropy Al0.3CoCrFeNi alloy fibers with high tensile strength and ductility at ambient and cryogenic temperatures[J].Acta Materialia, 2017,123:285-294.
【7】GLUDOVATZ B,HOHENWARTER A,CATOOR D,et al.A fracture-resistant high-entropy alloy for cryogenic applications[J].Science, 2014,345(6201):1153-1158.
【8】TANG Z,YUAN T,TSAI C W,et al.Fatigue behavior of a wrought Al0.5CoCrCuFeNi two-phase high-entropy alloy[J].Acta Materialia, 2015,99:247-258.
【9】HEMPHILL M A,YUAN T,WANG G Y,et al.Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys[J].Acta Materialia, 2012,60(16):5723-5734.
【10】WANG X F,ZHANG Y,QIAO Y,et al.Novel microstructure and properties of multicomponent CoCrCuFeNiTix alloys[J].Intermetallics, 2007,15(3):357-362.
【11】WANG F J,ZHANG Y.Effect of Co addition on crystal structure and mechanical properties of Ti0.5CrFeNiAlCo high entropy alloy[J].Materials Science and Engineering:A, 2008,496(1/2):214-216.
【12】ZHOU Y J,ZHANG Y,WANG Y L,et al.Solid solution alloys of AlCoCrFeNiTix with excellent room-temperature mechanical properties[J].Applied Physics Letters, 2007,90(18):181904.
【13】LIU Y,WANG J S,FANG Q H,et al.Preparation of superfine-grained high entropy alloy by spark plasma sintering gas atomized powder[J].Intermetallics, 2016,68:16-22.
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【23】ZHANG Y,ZHOU Y,LIN J,et al.Solid-solution phase formation rules for multi-component alloys[J].Advanced Engineering Materials, 2008,10(6):534-538.
【24】POLETTI M G,FIORE G,SZOST B A,et al.Search for high entropy alloys in the X-NbTaTiZr systems (X=Al,Cr,V,Sn)[J].Journal of Alloys and Compounds, 2015,620:283-288.
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【26】ZHANG Y,ZUO T T,TANG Z,et al.Microstructures and properties of high-entropy alloys[J].Progress in Materials Science, 2014,61:1-93.
【27】TIAN L H,FU M,XIONG W.Microstructural evolution of AlCoCrFeNiSi high-entropy alloy powder during mechanical alloying and its coating performance[J].Materials, 2018,11(2):320.
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