液氮强制冷却对Ti6Al4V表面激光熔覆制备WC/Ni60A涂层微观组织和性能的影响
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摘要
为改善Ti6Al4V钛合金的表面硬度和耐磨性能,采用液氮强制冷却辅助激光熔覆制备35%WC/Ni60A (质量分数,下同)复合涂层,研究液氮强制冷却对熔覆层微观组织和力学性能的影响。利用XRD、OM、EM和EDS分析液氮强制冷却熔覆层的显微组织和物相组成;通过硬度试验,磨损试验探究液氮强制冷却熔覆层的硬度及抗磨损性能。结果表明,液氮强制冷却熔覆层由α(Ti),WC,W_2C,TiC,TiNi,Ti_2Ni,TiNi_3,NiB相构成。液氮强制冷却熔覆层的平均显微硬度HV_(0.2)达到13.63 GPa,硬度较基体和空冷熔覆层分别提高4倍和1.61倍。此外,液氮强制冷却熔覆层耐磨性分别为基体和空冷熔覆层的5.39倍和1.77倍。
To improve the hardness and wear resistance of Ti6 Al4 V alloy, composite coatings were prepared on Ti6 Al4 V substrate by laser cladding 35 wt%WC/Ni60 A under liquid nitrogen cooling. The microstructural evolution and mechanical properties of the coating under liquid nitrogen cooling were investigated. The phase composition and microstructure were investigated by XRD, OM, SEM, EDS. Besides, the hardness and the wear resistance were analyzed by hardness testing and wear testing, respectively. The results indicate that the coating under liquid nitrogen cooling is mainly composed of α(Ti), WC, W_2 C, TiC, TiNi, Ti_2 Ni, TiNi_3 and NiB. The average microhardness of the coating under liquid nitrogen cooling is about 13.63 GPa, which is 4 times higher than that of the Ti6 Al4 V substrate and 1.61 times higher than that of the coating under air cooling. The wear resistance of the coating under liquid nitrogen cooling is 5.39 times higher than that of the Ti6 Al4 V substrate and 1.77 times higher than that of the coating under air cooling.
To improve the hardness and wear resistance of Ti6 Al4 V alloy, composite coatings were prepared on Ti6 Al4 V substrate by laser cladding 35 wt%WC/Ni60 A under liquid nitrogen cooling. The microstructural evolution and mechanical properties of the coating under liquid nitrogen cooling were investigated. The phase composition and microstructure were investigated by XRD, OM, SEM, EDS. Besides, the hardness and the wear resistance were analyzed by hardness testing and wear testing, respectively. The results indicate that the coating under liquid nitrogen cooling is mainly composed of α(Ti), WC, W_2 C, TiC, TiNi, Ti_2 Ni, TiNi_3 and NiB. The average microhardness of the coating under liquid nitrogen cooling is about 13.63 GPa, which is 4 times higher than that of the Ti6 Al4 V substrate and 1.61 times higher than that of the coating under air cooling. The wear resistance of the coating under liquid nitrogen cooling is 5.39 times higher than that of the Ti6 Al4 V substrate and 1.77 times higher than that of the coating under air cooling.
引文
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[2]Das D K,Trivedi S P.Mater Sci Eng A[J],2004,367(1-2):225
[3]Zhang Xiaowei(张晓伟),Liu Hongxi(刘洪喜),Jiang Yehua(蒋业华)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2012,41(1):178
[4]Ganesh B,Sha W,Ramanaiah N et al.Materials&Design[J],2014,56(4):480
[5]Zhu Y,Liu D,Tian X et al.Materials&Design[J],2014,56(7):445
[6]?sterle W,Klaffke D,Griepentrog M et al.Wear[J],2008,264(7-8):505
[7]Luo X,Li J,Li G J.Journal of Alloys&Compounds[J],2015,626:102
[8]Weng Z,Wang A,Wu X et al.Surface&Coatings Technology[J],2016,304:283
[9]Zang Chuncheng(臧春城),Wang Yanzhong(王延忠),Zhang Yidu(张以都)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(5):385
[10]Li Fuquan(李福泉),Feng Xinyou(冯鑫友),Chen Yanbin(陈彦宾)et al.Chinese Journal of Lasers(中国激光)[J],2016,43(4):111
[11]Fernández M R,García A,Cuetos J M et al.Wear[J],2014,324-325:80
[12]Wang Kaiming(王开明),Lei Yongping(雷永平),Wei Shizhong(魏世忠)et al.Transactions of Materials and Heat Treatment(材料热处理学报)[J],2016(7):172
[13]Wu Ping(吴萍),Zhou Changchi(周昌炽),Tang Xinan(唐西南)et al.Acta Metallurgica Sinica(金属学报)[J],2002,38(12):1257
[14]Zhang K M,Zou J X,Jun L I et al.Transactions of Nonferrous Metals Society of China[J],2012,22(8):1817
[15]Yu Benhai(余本海),Hu Xuehui(胡雪惠),Wu Yu’e(吴玉娥)et al.Chinese Journal of Lasers(中国激光)[J],2010,37(10):2672
[16]Weng Z,Wang A,Wu X et al.Surface&Coatings Technology[J],2016,304:283
[17]Tan C,Zhu H,Kuang T et al.Journal of Alloys&Compounds[J],2017,690:108
[18]Cui Z Q,Shi H X,Wang W X et al.Transactions of Nonferrous Metals Society of China[J],2015,25(5):1446
[19]Ge Y,Wang W,Su G et al.Rare Metal Materials&Engineering[J],2016,45(8):1949
[20]Wang Pengchun(王鹏春),Lu Yang(路阳),Yang Xiaotian(杨效田)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2016,26(2):375
[21]Zhu Hongmei(朱红梅),Tan Chaolin(谭超林),Kuang Tongchun(匡同春)et al.Chinese Journal of Lasers(中国激光)[J],2015,42(10):89
[22]Zhang Xue(张雪).Dissertation for Master(硕士论文)[D].Anshan:Liaoning University of Science and Technology,2014
[23]Sun Ronglu(孙荣禄),Niu Wei(牛伟),Wang Chengyang(王成扬)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2007,36(1):7
[24]Ma Q,Li Y,Wang J et al.Materials&Design[J],2016,92:897
[25]Wang Wenxian(王文先),Cheng Jianhua(陈建华),Zhang Hongxia(张红霞)et al.Chinese Journal of Lasers(中国激光)[J],2011,38(7):113
[26]Li Fuquan(李福泉),Gao Zhenzeng(高振增),Li Liqun(李俐群)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2017,46(1):177
[27]Shang Zhao(商昭).Thesis for Doctorate(博士论文)[D].Xian:Northwestern Polytechnical University,2015
[28]Shang Z,Shen J,Zhang J F et al.JOM[J],2014,66(9):1877
[29]Shang Z,Shen J,Wang L et al.Intermetallics[J],2015,57:25
[30]Liu Dan(刘丹),Chen Zhiyong(陈志勇),Chen Kepei(陈科培)et al.Heat Treatment of Metals(金属热处理)[J],2015,40(3):58
[31]Farshidianfar M H,Khajepour A,Gerlich A P.Journal of Materials Processing Technology[J],2016,231:468
[32]Ahmad R,Bakar M A.Materials&Design[J],2011,32(10):5120
[33]Brandl E,Schoberth A,Leyens C.Materials Science&Engineering A[J],2012,532(3):295
[34]Wang Wen(王文),Li Yao(李瑶),Hao Yaxin(郝亚鑫)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(11):2842
[35]Gao Y,Wang C,Lin Q et al.Surface&Coatings Technology[J],2006,201(6):2701
[36]Chen C J,Wang M C,Wang D S et al.Corrosion Engineering Science&Technology[J],2007,42(2):130
[37]Zhou S,Zeng X,Hu Q et al.Applied Surface Science[J],2008,255(5):1646
[38]Rong Lei(戎磊).Thesis for Doctorate(博士论文)[D].Shanghai:Shanghai Jiaotong University,2011
[39]Ren Jia(任佳),Liu Xiubo(刘秀波),Yu Pengcheng(余鹏程)et al.Tribology(摩擦学学报)[J],2015,35(4):407