张丽,沙明红,张峻巍,陈子尚,李胜利

• 1:辽宁科技大学激光先进制造技术研发中心
• 2:辽宁科技大学材料与冶金学院

摘要(Abstract)：

采用激光熔覆法制备Al_xCoCrFeNiTi_(0.5)(x=0.2,0.5,1.0,1.5)高熵合金涂层,研究Al含量对涂层组织、硬度及耐磨性的影响。结果表明,随铝含量x变化,相结构由FCC变成BCC结构,并且生成Al_(80_Cr_(13)Co_7和Al95Fe4Cr复杂相。当Al含量增加到1.0时,出现典型调幅分解组织,枝晶和枝晶间成分分布较均匀。随Al含量增加,硬度值提高,最高达到989HV0.5。Al1.0CoCrFeNiTi_(0.5)的耐磨性与U75V相比,磨损量减少了25%,摩擦系数减小了29%。

关键词(KeyWords)： 高熵合金;耐磨性;激光熔覆;微观结构

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201085);; 辽宁省科学技术计划资助项目(2012415026);; 全国大学生创新创业训练计划(201310146014);; 辽宁科技大学创新团队项目(2104TD02)

作者(Author): 张丽,沙明红,张峻巍,陈子尚,李胜利

DOI: 10.13289/j.issn.1009-6264.2015.12.032

参考文献(References)：

• [1]Lu Y P,Dong Y,Li J,et al.A criterion for topological close-packed phase formation in high entropy alloys[J].Entropy,2015,17(4):2355-2366.
• [2]邱星武,张云鹏.高熵合金的特点及研究现状[J].稀有金属与硬质合金,2012,40(1):44-47.QIU Xing-wu,ZHANG Yun-peng.The characteristics of high—entropy alloys and their latest development[J].Rare Metals and Cemented Carbides,2012,40(1):44-47.
• [3]Fan Y H,Zhang Y P,Guan H Y,et al.AINi Cr Fex Mo0.2Co Cu high entropy alloys prepared by powder metallurgy[J].Rare Metal Materials and Engineering,2013,42(6):1127-1129.
• [4]Ren B,Zhao R,Liu Z,et al.Microstructure and properties of Al0.3Cr Fe1.5Mn Ni0.5Tixand Al0.3Cr Fe1.5Mn Ni0.5Sixhigh-entropy alloys[J].Rare Metals,2014,33(2):149-154.
• [5]霍文燚,时海芳,张竞元.熔覆电流对Al Cr Fe Co Ni Cu高熵合金涂层显微组织的影响[J].金属热处理,2014,39(8):24-27.HUO Wen-yi,SHI Hai-fang,ZHANG Jing-yuan.Effect of cladding current on microstructure of Al Cr Fe Co Ni Cu high-entropy coating by argon arc cladding[J].Heat Treatment of Metals,2014,39(8):24-27.
• [6]Zhou Y J,Zhang Y,Wang X F,et al.Effect of component substitution on the microstructure and mechanical properties of MCo Cr Fe Ni Tix(M=Cu,Al)solid-solution alloys[J].Rare Metals,2008,27(6):627-631.
• [7]Cheng J B,Liu D,Liang X B,et al.Microstructure and electrochemical properties of Co Cr Cu Fe Ni Nb high-entropy alloys coatings[J].Acta Metallurgica Sinica(English Letter),2014,27(6):1031-1037.
• [8]Li B Y,Peng K,Hu A P,et al.Structure and properties of Fe Co Ni Cr Cu0.5Alx high-entropy alloy[J].Transaction of Nonferrous Metals Society of China,2013,(23):735-741.
• [9]Qiu X W,Liu C G.Microstructure and properties of Al2Cr Fe Co Cu Ti Nix high-entropy alloys prepared by laser cladding[J].Journal of Alloys and Compounds,2013,553:216-220.
• [10]陈大钦,李世晨,郑子樵,等.应力场对相分解过程影响的计算机模拟研究(I)——模型描述及对称成分下的相分离模拟[J].稀有材料与工程,2005,34(8):1200-1204.CHEN Da-qin,LI Shi-chen,ZHENG Zi-qiao,et al.Effect of stress field on phase separation process by computer simulation(I):model description and simulation of symmetrical composition phase separation Process[J].Rare Metal Materials and Engineering,2005,34(8):1200-1204.
• [11]Ren M X,Li B S,Fu H Z,et al.Formation condition of solid solution type high-entropy alloy[J].Transaction of Nonferrous Metals Society of China,2013,23(4):991-995.
• [12]农智升,李殿生,朱景川,等.Al含量对Cu Cr Fe Mn Ti Al高熵合金组织及摩擦磨损行为的影响[J].稀有金属材料与工程,2011,40(2):550-554.NONG Zhi-sheng,LI Dian-sheng,ZHU Jing-chuan,et al.Effect of aluminum content on microstructure and wear resistance of Cu Cr Fe Mn Ti Alx highentropy alloy[J].Rare Metal Materials and Engineering,2011,40(2):550-554.
• [13]Zhang K B,Fu Z Y.Effects of annealing treatment on phase composition and microstructure of Co Cr Fe Ni Ti Alx high-entropy alloys[J].Intermetallics,2012,22(3):24-32
• [14]阳隽觎,周云军,张勇,等.无基元高混合熵合金形成固溶体结构三原则[J].中国材料科技与设备,2007(5):61-63.YANG Juan-yu,ZHOU Yun-jun,ZHANG Yong,et al.The three principles of no primitive high entropy alloys forming solid solution[J].Material Technology and Equipment China,2007(5):61-63.
• [15]Ye X Y,Ma M X,Liu W J,et al.The property research on high-entropy alloy Alx Fe Co Ni Cu Cr coating by laser cladding[J].Physics Procedia,2011(12):303-312.

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