Corrosion and slurry erosion properties of FeCrNiCoCuAlx high-entropy alloy coatings prepared by laser cladding
BAO Ya-yun1, JI Xiu-lin1,2, JI Cui-cui1, ZHAO Jian-hua1,3, CHENG Jiang-bo3, XU Lin4
1. College of Mechanical&Electrical Engineering, Hohai University, Changzhou 213022, Jiangsu, China;
2. Engineering Research Center of Dredging Technology(Ministry of Education), Hohai University, Changzhou 213022, Jiangsu, China;
3. College of Mechanics&Materials, Hohai University, Nanjing 210098, China;
4. Changshu Pufa No. 2 Thermal Power Co., Ltd., Suzhou 215513, Jiangsu, China
Abstract：FeCrNiCoCuAlx (x=0, 1, 2, 3) high-entropy alloy (HEA) coatings were prepared on Q345 steel by laser cladding. The effects of Al content on microstructure and properties of FeCrNiCoCuAlx HEA coatings were studied by XRD, SEM and erosion wear tests. The results show that the HEA coatings are mainly composed by simple FCC and BCC solid-solution phases. With the increase of Al addition, the microstructure is evolved gradually from FCC to BCC. And the hardness of the HEA coatings improves significantly and the maximum value is 580HV. In 3.5%NaCl solution, the corrosion current density of FeCrNiCoCuAlx HEA coatings decreases firstly and then increases with the increase of Al addition. And the HEA coating has the best corrosion resistance at x=1. Meanwhile, the mass loss rate of HEA coating decreases in the erosion test when the impact angle is changed from 90° to 30°, exhibiting an erosion characteristic of ductile materials. The slurry erosion properties of the HEA coating increase with the increase of Al content, and the erosion wear mechanism is evolved from forging extrusion to ploughing and micro-cutting.
[1] SINGH S,WANDERKA N,MURTY B S,et al.Decomposition in multi-component AlCoCrCuFeNi high-entropy alloy[J].Acta Materialia,2011,59:182-190.
[2] 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.
[3] 梁秀兵,魏敏,程江波,等.高熵合金新材料的研究进展[J].材料工程,2009(12):75-79. LIANG X B,WEI M,CHENG J B,et al.Research progress in advanced materials of laser cladding[J].Journal of Materials Engineering,2009(12):75-79.
[4] 高家诚,李锐.高熵合金研究的新进展[J].功能材料,2008,39(7):1059-1061. GAO J C,LI R.The development of studies in high-entropy alloy[J].Journal of Functional Materials,2008,39(7):1059-1061.
[5] WU W H,YANG C C,YEH J W.Industrial development of high-entropy alloys[J].European Journal of Control,2006,31(6):737-747.
[6] 刘宁,朱智轩,金云学,等.激光熔覆技术制备高熵合金涂层的研究进展[J].材料导报,2014,28(3):133-134. LIU N,ZHU Z X,JIN Y X,et al.Research progress of laser cladding technology to prepare high-entropy alloy coating[J].Materials Review,2014,28(3):133-134.
[7] ZHANG H,PAN Y,HE L Z.Microstructural control and properties of 6FeNiCoSiCrAlTi high-entropy alloy coating prepared by laser cladding[J].Applied Surface Science,2011,257:2259-2263.
[8] 马明星,柳元汛,谷雨,等.激光制备AlxCoCrNiMo高熵合金涂层的研究[J].应用激光,2010,30(6):433-437. MA M X,LIU Y X,GU Y,et al.Synthesis of AlxCoCrNiMo high entropy alloy coatings by laser cladding[J].Applied Laser,2010,30(6):433-437.
[9] 黄祖凤,张冲,唐群华,等.WC颗粒对激光熔覆FeCoCrNiCu高熵合金涂层组织与硬度的影响[J].中国表面工程,2013,26(1):13-19. HUANG Z F,ZHANG C,TANG Q H,et al.Effects of WC particles on the microstructure and hardness of FeCoCrNiCu high entropy alloy coating prepared by laser cladding[J].China Surface Engineering,2013,26(1):13-19.
[10] 刘永长,薛玉芳,宋广生.激光熔覆技术的研究现状[J].粉末冶金技术,1998,16(3):209-212. LIU Y C,XUE Y F,SONG G S,et al.Research progress of laser cladding[J].Powder Metallurgy Technology,1998,16(3):209-212.
[11] 张晖,何宜柱,潘冶,等.激光熔覆BCC结构高硬度高断裂韧性高熵合金涂层[C]//中国机械工程学会热处理分会.第十次全国热处理大会论文集.天津:中国机械工程学会热处理分会,2011:676-679. ZHANG H,HE Y Z,PAN Y,et al.Laser clad high hardness fracture toughness high entropy alloy coating with BCC structure[C]//CMES.10th National Heat Treatment Conference.Tianjin:CMES,2011:676-679.
[12] 翁子清,董刚,张群莉,等.退火对激光熔覆FeCrNiCoMn高熵合金涂层组织与性能的影响[J].中国激光,2014,41(3):59-64. WENG Z Q,DONG G,ZHANG Q L,et al.Effect of annealing on microstructure and properties of FeCrNiCoMn high-entropy alloy coating prepared by laser cladding[J].Chinese Journal of Lasers,2014,41(3):59-64.
[13] YEH J W,CHEN S K,LIN S J,et al.Nanostructured high-entropy alloys with multiple principal elements:novel alloy design concepts and outcomes[J].Advanced Engineering Materials,2004,6(5):299-303.
[14] ZHUANG Y X,LIU W J,CHEN Z Y,et al.Effect of elemental interaction on microstructure and mechanical properties of FeCoNiCuAl alloys[J].Materials Science & Engineering:A,2012,556:395-399.
[15] RAGHAVAN R,HARIKUMAR K C,MURTY B S.Analysis of phase formation in multi-component alloys[J].Journal of Alloys and Compounds,2012,544:152-158.
[16] PI J H,PAN Y.Thermodynamic analysis for microstructure of high-entropy alloys[J].Rare Metal Materials and Engineering,2013,42(2):0232-0237.
[17] 安旭龙,刘其斌,郑波,等.碳化钨对激光熔覆高熵合金的影响[J].强激光与粒子束,2014,26(12):129001. AN X L,LIU Q B,ZHENG B,et al.Effect of wolfram carbide particles on high entropy alloy coating prepared by laser cladding[J].High Power Laser and Particle Beams,2014,26(12):129001.
[18] 邱星武,张云鹏,刘春阁.激光熔覆法制Al2CrFeCoxCuNiTi高熵合金涂层的组织与性能[J].粉末冶金材料科学与工程,2013,18(5):735-740. QIU X W,ZHANG Y P,LIU C G.Microstructure and properties of Al2CrFeCoxCuNiTi high-entropy alloy coating prepared by laser cladding[J].Materials Science and Engineering of Powder Metallurgy,2013,18(5):735-740.
[19] 王艳苹.AlCrFeCoNiCu系多主元合金及其复合材料的组织与性能[D].哈尔滨:哈尔滨工业大学,2009. WANG Y P.Microstructure and properties of AlCrFeCoNiCu multi-principal-element alloys and its composites[D].Harbin:Harbin Institute of Technology,2009.
[20] FLEISCHER R L.Statistics of stabilities of ternary elements in intermetallic compounds[J].Journal of Material Science Letter,1988,7(5):525-526.
[21] TAKEUCHI A,AKIHISA I.Classification of bulk metallic glasses by atomic size difference,heat of mixing and period of constituent elements and its application to characterization of the main alloying element[J].Materials Transactions,2005,46(12):2817-2829.
[22] 刘德飘,刘贵仲,郭景杰.Ni元素对AlFeCoCrCuNix高熵合金组织及电化学腐蚀性能的影响[J].稀有金属与硬质合金,2015,43(5):49-53. LIU D P,LIU G Z,GUO J J.Effects of Ni addition on the microstructure and electrochemical corrosion property of AlFeCoCrCuNix high-entropy alloys[J].Rare Metals and Cemented Carbides,2015,43(5):49-53.
[23] 牛雪莲,王立久,孙丹,等.AlxFeCoCrNiCu(x=0.25, 0.5, 1.0)高熵合金的组织结构和电化学性能研究[J].功能材料,2013,44(4):532-535. NIU X L,WANG L J,SUN D,et al.Research on microstructure and electrochemical properties of AlxFeCoCrNiCu(x=0.25,0.5,1.0)high-entropy alloys[J].Journal of Functional Materials,2013,44(4):532-535.
[24] 吴小盼,张伟强,李哲.CuCoCrFeNi高熵合金的电化学腐蚀性能和抗菌性能研究[J].沈阳理工大学学报,2016,35(6):1-6. WU X P,ZHANG W Q,LI Z.Electrochemical corrosion performance and antimicrobial property of CuCoCrFeNi high entropy alloy[J].Journal of Shenyang Ligong University,2016,35(6):1-6.
[25] 潘牧,罗志平.材料的冲蚀问题[J].材料科学与工程,1999,17(3):92-96. PAN M,LUO Z P.Erosion of materials[J].Materials Science & Engineering,1999,17(3):92-96.
[26] 马颖,任峻,李元东,等.冲蚀磨损研究的进展[J].兰州理工大学学报,2005,31(1):21-25. MA Y,REN J,LI Y D,et al.Development of research on erosion of materials[J].Journal of Lanzhou University of Technology,2005,31(1):21-25.
[27] HUTCHINGS I M.A model for the erosion of metals by spherical particles at normal incidence[J].Wear,1981,70(3):269-281.
[28] 牟军,郦剑,郭绍义,等.金属及陶瓷材料冲蚀研究的进展[J].材料科学与工程,1994,12(2):9-15. MOU J,LI J,GUO S Y,et al.Development of researches on erosion of metallic and ceramic materials[J].Materials Science & Engineering,1994,12(2):9-15.
2019, Vol. 47 
