周勇,康凯祥,董会,郭鹏飞,姚宇琦

• 1:西安石油大学材料科学与工程学院西安市高性能油气田材料重点实验室

摘要(Abstract)：

采用激光熔覆技术在Q235钢表面制备了AlCoCrFeNi高熵合金涂层和AlCoCrFeNi-TiC复合涂层，采用X射线衍射仪(XRD)、扫描电镜(SEM)和能谱分析仪(EDS)表征了两种涂层的相结构和显微组织，采用维氏硬度计以及摩擦磨损试验测试了涂层的硬度和摩擦磨损性能，研究了TiC对AlCoCrFeNi高熵合金涂层耐磨性的影响。结果表明：AlCoCrFeNi涂层由BCC相组成，AlCoCrFeNi-TiC复合涂层由BCC相和双尺度TiC颗粒组成。与AlCoCrFeNi涂层相比，AlCoCrFeNi-TiC复合涂层的硬度提高了近1倍(从443 HV0.3提高到862 HV0.3),摩擦系数降低了33%,体积磨损率下降了64%,耐磨性提升了近200%。

关键词(KeyWords)： 高熵合金涂层;TiC增强涂层;激光熔覆;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 陕西省自然科学基金(2020JM540);; 西安石油大学“材料科学与工程”省级优势学科(YS37020203);西安石油大学研究生创新基金(YCS20211039)

作者(Author): 周勇,康凯祥,董会,郭鹏飞,姚宇琦

DOI: 10.13289/j.issn.1009-6264.2021-0452

参考文献(References)：

• [1] Yeh J W,Chen Y L,Lin S J,et al.High-entropy alloys-a new era of exploitation[J].Materials Science Forum,2007,560:1-9.
• [2] Dca B,Ss A,Paj C,et al.Characterization of as-cast microstructural heterogeneities and damage mechanisms in eutectic AlCoCrFeNi2.1 high entropy alloy[J].Materials Characterization,2019,158:109955.
• [3] 赵雪柔，吕煜坤，石拓.高熵合金相形成理论研究进展[J].材料导报，2019,33(7):1174-1181.ZHAO Xue-rou,Lü Yu-kun,SHI Tuo.Advances in the study of phase formation theory of high entropy alloys[J].Materials Reports,2019,33(7):1174-1181.
• [4] 冯力，胡昱轩，李文生，等.冷喷涂辅助原位合成CuFeCrAlNiTi高熵合金涂层的组织性能研究[J].表面技术，2021,50(7):194-202.FENG Li,HU Yu-xuan,LI Wen-sheng,et al.Microstructure and properties of CuFeCrAlNiTi high entropy alloy coating prepared by cold spray assisted in-situ synthesis[J].Surface Technology,2021,50(7):194-202.
• [5] Chen Y,Xu Z,Wang M,et al.A single-phase V0.5Nb0.5ZrTi refractory high-entropy alloy with outstanding tensile properties[J].Materials Science and Engineering A,2020,792:139774.
• [6] 姚昆达，刘亮，商剑，等.Al0.8CrFe2Nix高熵合金的组织与力学性能[J].特种铸造及有色合金，2020,40(8):880-883.YAO Kun-da,LIU Liang,SHANG Jian,et al.Microstructure and mechanical properties of Al0.8CrFe2Nixhigh entropy alloys[J].Special Casting and Nonferrous Alloys,2020,40(8):880-883.
• [7] Batchelor T,Pedersen J K,Winther S H,et al.High-entropy alloys as a discovery platform for electrocatalysis[J].Joule,2019,3(3):834-845.
• [8] Deluigi O R,Pasianot R C,Valencia F J,et al.Simulations of primary damage in a high entropy alloy:Probing enhanced radiation resistance[J].Acta Materialia,2021,213:116951.
• [9] 谈淑咏，刘晓东，霍文燚，等.磁控溅射CoCrFeNi高熵合金薄膜的硬度和电阻率研究[J].表面技术，2019,48(10):157-162.TAN Shu-yong,LIU Xiao-dong,HUO Wen-yi,et al.Hardness and electrical resistivity of magnetron sputtered CoCrFeNi high entropy alloy films[J].Surface Technology,2019,48(10):157-162.
• [10] 李涵，马玲玲，位超群，等.钛合金表面激光熔覆AlBxCoCrNiTi高熵合金涂层的组织与性能[J].表面技术，2017,46(6):226-231.LI Han,MA Ling-ling,WEI Chao-qun,et al.Microstructure and properties of laser cladding AlBxCoCrNiTi high-entropy alloy coating on titanium alloys[J].Surface Technology,2017,46(6):226-231.
• [11] 吕莎莎，祖宇飞，陈国清，等.陶瓷颗粒增强Cr0.5MoNbWTi难熔高熵合金复合材料的制备及其力学性能[J].无机材料学报，2021,36(4):386-392.Lü Sha-sha,ZU Yu-fei,CHEN Guo-qing,et al.Preparation and mechanical properties of the ceramic-reinforced Cr0.5MoNbWTi refractory high-entropy alloy matrix composites[J].Journal of Inorganic Materials,2021,36(4):386-392.
• [12] Shen Q,Kong X,Chen X,et al.Powder plasma arc additive manufactured CoCrFeNi(SiC)x high-entropy alloys:Microstructure and mechanical properties[J].Materials Letters,2021,282:128736.
• [13] 李云峰，石岩.WC对激光熔覆层组织及耐磨耐冲击性的影响[J].中国表面工程，2021,34(2):104-113.LI Yun-feng,SHI Yan.Effect of WC on microstructure,wear resistance and impact resistance of laser cladding layer[J].China Surface Engineering,2021,34(2):104-113.
• [14] Cai Y,Zhu L,Cui Y,et al.Fracture and wear mechanisms of FeMnCrNiCo+x(TiC) composite high-entropy alloy cladding layers[J].Applied Surface Science,2021,543:148794.
• [15] 李鹏德，吴有智，张爱军，等.Al0.2Co1.5CrFe1.2Ni1.5TiC0.4高熵合金的微观组织、力学与高温摩擦学性能[J].摩擦学学报，2017,37(4):457-464.LI Peng-de,WU You-zhi,ZHANG Ai-jun,et al.Microstructure,mechanical and tribological properties of Al0.2Co1.5CrFe1.2Ni1.5TiC0.4 high entropy alloy[J].Tribology,2017,37(4):457-464.
• [16] 李洪超，王军，袁睿豪，等.AlCoCrFeNi系高熵合金的强化方法研究[J].材料导报，2021,35(17):17010-17018.LI Hong-chao,WANG Jun,YUAN Rui-hao,et al.Study on strengthening methods of AlCoCrFeNi high-entropy alloys[J].Materials Reports,2021,35(17):17010-17018.
• [17] Jiang P F,Zhang C H,Zhan S,et al.Fabrication and wear behavior of TiC reinforced FeCoCrAlCu-based high entropy alloy coatings by laser surface alloying[J].Materials Chemistry and Physics,2020,255(5):123571.

文章评论(Comment)：