采用5kW CO2激光设备,在42CrMo基体上制备出原位合成Nb2 (C,N)及V8C7颗粒增强的铁基复合涂层,研究了熔覆层的组织及性能.结果表明:激光熔覆层主要组成相为α-Fe相、γ-Fe相、Nb2 (C,N)及V8C7；增强相颗粒弥散分布在铁基复合涂层中,与母材相比,其磨损失重约为母材的1/8,显著提高了熔覆层的硬度和耐磨性.进一步的抗氧化性实验结果表明,氧化层结构连续致密,与42CrMo基体相比,在750℃/120h恒温氧化后的氧化层的厚度约为基体氧化层厚度的1/8.
参考文献
| [1] | MONSON P J E;STEEN W M .Comparison of laser hardfacing with conventional processes[J].Surface Engineering,1990,6(03):185-193. |
| [2] | Pei YT.;Zuo TC. .Gradient microstructure in laser clad TiC-reinforced Ni-alloy composite coating[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):259-263. |
| [3] | YANG S;LIU W;ZHONG M L et al.TiC reinforced composite coating produced powder feeding laser cladding[J].Materials Letters,2004,58(24):2958-2962. |
| [4] | Anandkumar R;Almeida A;Colaco R;Vilar R;Ocelik V;De Hosson JTM .Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings[J].Surface & Coatings Technology,2007(24):9497-9505. |
| [5] | 孙海勤,晁明举,敬晓定,张现虎.原位生成VC颗粒增强镍基激光熔覆层研究[J].激光杂志,2008(05):69-71. |
| [6] | Baoshuai Du;Sameer R. Paital;Narendra B. Dahotre .Phase constituents and microstructure of laser synthesized TiB_2-TiC reinforced composite coating on steel[J].Scripta materialia,2008(10):1147-1150. |
| [7] | 张敏,王新洪,邹增大,曲仕尧.TiC-VC颗粒增强Fe基熔敷层组织与耐磨性能[J].中国机械工程,2006(04):417-421. |
| [8] | BAOSHUAI DU;ZENGDA ZOU;XINHONG WANG;QINGMING LI .IN SITU SYNTHESIS OF TiC–TiB_2 REINFORCED FeCrSiB COMPOSITE COATING BY LASER CLADDING[J].Surface review and letters,2007(2):315-319. |
| [9] | HUANG C C;LEE J T;TAAI W T .Laser cladding high chromium-nitrogen alloys on carbon steel[J].Journal of the Electrochemical Society,1995,142(04):194-198. |
| [10] | 杜宝帅,邹增大,王新洪,李清明.激光熔覆原位自生TiB2-TiC/ FeCrSiB复合涂层研究[J].应用激光,2007(04):269-272. |
| [11] | Chaofeng Wu;Mingxing Ma;Wenjin Liu;Minlin Zhong;Weiming Zhang;Hongjun Zhang .Laser producing Fe-based composite coatings reinforced by in situ synthesized multiple carbide particles[J].Materials Letters,2008(17/18):3077-3080. |
| [12] | 吴朝锋,马明星,刘文今,钟敏霖,张伟明,张红军.激光原位制备复合碳化物颗粒增强铁基复合涂层及其耐磨性的研究[J].金属学报,2009(08):1013-1018. |
| [13] | 杜宝帅,李清明,王新洪,邹增大.激光熔覆原位自生TiC-VC颗粒增强Fe基金属陶瓷涂层[J].焊接学报,2007(04):65-68. |
| [14] | 张现虎,晁明举,梁二军,袁斌.激光熔覆原位生成TiC-ZrC颗粒增强镍基复合涂层[J].中国激光,2009(04):998-1004. |
| [15] | 齐勇田,施瀚超.Ti（C、N）陶瓷颗粒对镍基激光熔覆层组织和性能影响[J].中国表面工程,2008(02):26-30. |
| [16] | 齐勇田,邹增大,曲仕尧,朱庆军.Ti（C0.3N0.7）/铁基复合耐磨熔覆层激光熔覆[J].焊接学报,2007(11):33-36. |
| [17] | QI Yong-tian,ZOU Zeng-da.Microstructure and Wear Properties of Laser Coating Reinforced by Ti(CxN1-x) on Adamite Roller[J].钢铁研究学报（英文版）,2009(03):78-82,88. |
| [18] | 杨玉玲,刘常升,张多,郑毅然.激光熔覆-激光气体氮化方法制取TiCN-TiN复合熔覆层[J].东北大学学报（自然科学版）,2007(09):1289-1292. |
| [19] | 张锦英,马明星,刘文今,钟敏霖,张伟明,张红军.钒、钛对激光熔覆铁基原位生成颗粒增强复合涂层组织的影响[J].金属热处理,2003(08):1-4. |
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