杨行,王华,徐峰,李江华,张雷

• 1:陕西理工大学材料科学与工程学院
• 2:陕西理工大学矿渣综合利用环保技术国家与地方联合工程实验室

摘要(Abstract)：

为了探究激光功率对熔覆层组织与性能的影响，采用6种激光功率在42CrMo钢表面制备了FeCoNiCrMo高熵合金熔覆层。通过X射线衍射仪(XRD)、扫描电镜(SEM)、能谱仪(EDS)、维氏显微硬度计、应力分析仪、摩擦磨损试验机和电化学工作站对熔覆层的显微组织、物相、力学性能及耐蚀性能进行了研究。结果表明：激光熔覆制备的FeCoNiCrMo涂层的组织主要为FCC固溶体相，当激光功率大于1.6 kW时，涂层出现BCC相(α-Fe)结构，组织为树枝晶，枝晶内为马氏体，枝晶间为含Cr、Mo元素的铁素体；随着激光功率增大，涂层硬度先增大后减小，1.6 kW时达最大值522 HV0.3;激光功率1.8 kW时涂层的耐磨性与耐腐蚀性最好，磨损率与自腐蚀电流密度分别为0.71×10~(-5) g·N~(-1)·m~(-1)和1.69×10~(-9) A·cm~(-2)。激光功率是影响FeCoNiCrMo高熵合金涂层组织与性能的重要因素，提高激光功率有利于促进BCC相的生成，显著提高涂层力学性能及腐蚀性能。

关键词(KeyWords)： 激光熔覆;FeCoNiCrMo高熵合金涂层;摩擦性能;电化学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51901120)

作者(Author): 杨行,王华,徐峰,李江华,张雷

DOI: 10.13289/j.issn.1009-6264.2022-0437

参考文献(References)：

• [1] Cantor B,Chang I T H,Knight P,et al.Microstructural development in equiatomic multicomponent alloys[J].Materials Science and Engineering A,2004,375:213-218.
• [2] 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.
• [3] 赵海朝，梁秀兵，乔玉林，等.激光熔覆高熵合金涂层的研究进展[J].材料工程，2019,47(10):33-43.ZHAO Hai-chao,LIANG Xiu-bing,QIAO Yu-lin,et al.Research progress in high-entropy alloy coatings by laser cladding[J].Journal of Materials Engineering,2019,47(10):33-43.
• [4] 姜明明，孙树峰，王津，等.激光熔覆制备高熵合金涂层耐磨性研究进展[J].材料工程，2022,50(3):18-32.JIANG Ming-ming,SUN Shu-feng,WANG Jin,et al.Research progress in wearre sistance of high entropy alloy coatings prepared by laser cladding[J].Journal of Materials Engineering,2022,50(3):18-32.
• [5] 张航，陈子豪，何垚垚，等.增材制造高熵合金的研究进展[J].特种铸造及有色合金，2020,40(12):1314-1322.ZHANG Hang,CHEN Zi-hao,HE Yao-yao,et al.Research progress in additive manufacturing high-entropy alloy[J].Special Casting and Nonferrous Alloys,2020,40(12):1314-1322.
• [6] Naveena B E,Keshavamurthy R,Sekhar N.Dry sliding wear behaviour of plasma sprayed flyash-Al2O3 and flyash-SiC coatings on the Al6061 aluminum alloy[J].Silicon,2019,11(3):1575-1584.
• [7] 黄标，张冲，程虎，等.激光熔覆FeCoCrxNiB高熵合金涂层的组织结构与耐磨性[J].中国表面工程，2014,27(6):82-88.HUANG Biao,ZHANG Chong,CHENG Hu,et al.Microstructure and wear resistance of FeCoCrxNiB high-entropy alloy coatings prepared by laser cladding[J].China Surface Engineering,2014,27(6):82-88.
• [8] 郝文俊，孙荣禄，牛伟，等.激光熔覆CoCrFeNiSix高熵合金涂层组织及耐蚀性能研究[J].表面技术，2021,50(8):343-348.HAO Wen-jun,SUN Rong-lu,NIU Wei,et al.Study on microstructure and corrosion resistance of CoCrFeNiSix high-entropy alloy coating by laser cladding[J].Surface Technology,2021,50(8):343-348.
• [9] 邱星武，张云鹏，刘春阁.激光熔覆法制备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 Xing-wu,ZHANG Yun-peng,LIU Chun-ge.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.
• [10] 左润燕，孙荣禄，牛伟，等.激光熔覆CoCrFeNiTix高熵合金涂层的组织与性能[J].表面技术，2022,51(3):363-370.ZUO Run-yan,SUN Rong-lu,NIU Wei,et al.Microstructure and properties of CoCrFeNiTix high entropy alloy coated by laser cladding[J].Surface Technology,2022,51(3):363-370.
• [11] 张世一，韩彬，李美艳，等.激光熔覆AlxCoCrCuFeNi高熵合金涂层组织与耐磨性[J].表面工程与再制造，2021,21(2):35-39.ZHANG Shi-yi,HAN Bin,LI Mei-yan,et al.Microstructure and wear resistance of laser cladding AlxCoCrCuFeNi high entropy alloy coating[J].Surface Engineering and Remanufacturing,2021,21(2):35-39.
• [12] 于克东，赵伟，张辉.离焦量对激光熔覆TiCoNiCrFe高熵合金涂层组织与性能的影响研究[J].齐鲁工业大学学报，2021,35(5):55-59.YU Ke-dong,ZHAO Wei,ZHANG Hui.Defocusing amount on microstructure and properties of laser cladding TiCoNiCrFe high entropy alloy coating[J].Journal of Qilu University of Technology,2021,35(5):55-59.
• [13] 汪震，尚晓娟，田兴强，等.激光熔覆工艺参数对MoFeCrTiWAlNb高熔点高熵合金涂层组织和性能的影响[J].材料保护，2021,54(4):94-101.WANG Zhen,SHANG Xiao-juan,TIAN Xing-qiang,et al.Effects of laser cladding process parameters on microstructure and properties of MoFeCrTiWAlNb high-melting-point and high-entropy alloy coating[J].Material Protection,2021,54(4):94-101.
• [14] 冯凯，郭彦兵，冯育磊，等.激光熔覆高强韧铁基涂层精细组织调控与性能研究[J].金属学报，2022,58(4):513-528.FENG Kai,GUO Yan-bing,FENG Yu-lei,et al.Microstructure controlling and properties of laser cladded high strength and high toughness Fe-based coatings[J].Acta Mtallurgica Sinica,2022,58(4):513-528.
• [15] 张国松，侯怀志，殷强浩，等.功率对激光熔覆(Fe0.25Co0.25Ni0.25Cr0.125Mo0.125)86B14涂层组织均质性及磨损性能的影响[J].中国表面工程，2022,35(3):214-225.HANG Guo-song,HOU Huai-zhi,YIN Qiang-hao,et al.Effect of power on microstructure homogeneity and wear performance of lser cladding (Fe0.25Co0.25Ni0.25Cr0.125Mo0.125)86B14 coating[J].China Surface Engineering,2022,35(3):214-225.
• [16] Zhang L,Wang C,Han L,et al.Influence of laser power on microstructure and properties of laser clad Co-based amorphous composite coatings[J].Surfaces and Interfaces,2017,6:18-23.
• [17] 赵万新，周正，黄杰，等.FeCrNiMo激光熔覆层组织与摩擦磨损行为[J].金属学报，2021,57(10):1291-1298.ZHAO Wan-xin,ZHOU Zheng,HUANG Jie,et al.Microstructure and frictional wear behavior of FeCrNiMo alloy layer fabricated by laser cladding[J].Acta Metallurgica Sinica,2021,57(10):1291-1298.
• [18] 王强，李洋洋，杨洪波，等.激光功率对17-4PH丝材激光熔覆组织及硬度的影响[J].表面技术，2021,50(3):191-197.WANG Qiang LI Yang-yang,YANG Hong-bo,et al.Effect of laser power on laser cladding structure and hardness of 17-4PH wire[J].Surface Technology,2021,50(3):191-197.
• [19] 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 Zu-feng,ZHANG Chong,TANG Qun-hua,et al.Effects of WC particleson the microstructure and hardness of FeCoCrNiCu high entropy alloy coating prepared by laser cladding[J].China Surface Engineering,2013,26(1):13-19.
• [20] Takeuchi A,Inoue A.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.
• [21] 马清，张艳梅，卢冰文，等.激光功率对激光熔覆FeCoNiCr高熵合金涂层组织结构及腐蚀性能的影响[J].中国表面工程，2022,35(1):116-124.MA Qing,ZHANG Yan-mei,LU Bing-wen,et al.Effects of laser power on microstructure and corrosion property of laser cladding FeCoNiCr high entropy alloy coatings[J].China Surface Engineering,2022,35(1):116-124.
• [22] 李林起，姚成武，黄坚，等.激光熔覆高硬度铁基涂层枝晶间残余奥氏体相特征[J].中国激光，2017,44(3):136-142.LI Lin-qi,YAO Cheng-wu,HUANG Jian,et al.Characteristics of interdendritic residual austenite in laser cladding of high hardness iron-based coating[J].Chinese Journal of Lasers,2017,44(3):136-142.
• [23] 时晓宇，温道胜，王守仁，等.激光熔覆灰铸铁制动盘Fe-Ni-Cr梯度复合涂层微观组织及高温摩擦磨损性能研究[J].中国激光，2022,49(2):188-199.SHI Xiao-yu,WEN Dao-sheng,WANG Shou-ren,et al.Microstructure and high temperature friction and wear properties of laser cladding Fe-Ni-Cr composite coating for brake disc[J].Chinese Journal of Lasers,2022,49(2):188-199.
• [24] 魏子豪，朱春东，汪黎明，等.P20模具钢TD盐浴渗铬覆层摩擦磨损性能研究[J].热加工工艺，2021,50(8):72-76.WEI Zi-hao,ZHU Chun-dong,WANG Li-ming,et al.Study on friction and wear properties of P20 die steel coating TD salt bath chrome[J].Hot Working Technology,2021,50(8):72-76.
• [25] 瓦伦丁·波波夫.接触力学与摩擦学的原理及其应用[M].李强，雒建斌，译.北京：清华大学出版社，2011:239-241.POPOV V L.Contact Mechanics and Friction Physical Principles and Applications[M].LI Qiang,LUO Jian-bin,translated.Beijing:Tsinghua University Press,2011:239-241.
• [26] 李文娟.激光熔覆高熵合金涂层的研究进展[J].现代制造技术与装备，2022,58(3):64-66.LI Wen-juan.Research status and prospects of laser cladding high-entropy alloy coatings[J].Modern Manufacturing Technology and Equipment,2022,58(3):64-66.
• [27] 韩晨阳，孙耀宁，徐一飞，等.激光熔覆纳米TiC增强AlCoCrFeNi高熵合金磨损及腐蚀性能[J].稀有金属材料与工程，2022,51(2):607-614.HAN Chen-yang,SUN Yao-ning,XU Yi-fei,et al.Wear and corrosion properties of nano-tic reinforced AlCoCrFeNi high entropy alloy prepared by laser cladding[J].Rare Metal Materials and Engineering,2022,51(2):607-614.

文章评论(Comment)：