Impact toughness and wear property of WC/H13-Inconel625 composites by laser cladding
ZHANG Hang1, LU Yuan-yuan2, WANG Tao1, LU Ya-ran1, LIU De-jian1
1. State Key Laboratory of Material Processing and Die Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
2. School of Engineering Technology, Hubei University of Technology, Wuhan 430068, China
Abstract：To improve the poor toughness of traditional particulate reinforced composites, microstructurally toughened composites with WC/H13 as reinforced region and Inconel625 as toughened region were prepared by laser cladding. The microstructure of composites and impact fracture were analysed by optical microscopy, ultra-depth 3D microscope and scanning electron microscopy. The impact toughness and wear property of composites were investigated by Charpy impact testing machine and friction-abrasion testing machine. The results show that the reinforced region of 20% (volume fraction,the same below)WC/H13 is reinforced by WC particles and M6C carbides while the toughened region of Inconel625 alloy is mainly composed of columnar dendrite crystals and precipitated phases. The average hardness of Inconel625 is 230.5HV, while the hardness of WC/H13 is gradually increased to 402HV from the interface to the center area. The average impact energy of microstructurally toughened composites is 13.8J/cm2, which is 5.5 times of traditional 10% WC/H13. In the condition of dry sliding wear at room temperature, the wear resistance of microstructurally toughened composites is comparable to traditional 10% WC/H13 and 5 times of quenched H13 steel. The average friction coefficient of microstructurally toughened composites is 81% of traditional 10% WC/H13 and 80% of quenched H13 steel, which indicates excellent anti-wear and wear resistant property. By microstructurally toughening, the impact toughness of particulate reinforced composites can be substantially improved with excellent wear resistant property ensured.
张航, 路媛媛, 王涛, 鲁亚冉, 刘德健. 激光熔覆WC/H13-Inconel625复合材料的冲击韧性与磨损性能[J]. 材料工程, 2019, 47(4): 127-134.
ZHANG Hang, LU Yuan-yuan, WANG Tao, LU Ya-ran, LIU De-jian. Impact toughness and wear property of WC/H13-Inconel625 composites by laser cladding. Journal of Materials Engineering, 2019, 47(4): 127-134.
[1] 王成彪.摩擦学材料及表面工程[M].北京:国防工业出版社,2012:156-157. WANG C B.Tribological materials and surface engineering[M].Beijing:National Defense Industry Press,2012:156-157.
[2] 杨胶溪,张健全,常万庆,等.激光熔覆WC/Ni基复合涂层高温滑动干摩擦磨损性能[J].材料工程,2016,44(6):110-116. YANG J X,ZHANG J Q,CHANG W Q,et al.High temperature dry sliding friction and wear performance of laser cladding WC/Ni composite coating[J].Journal of Materials Engineering,2016,44(6):110-116.
[3] LEE Y T R,ASHRAFIZADE H,FISHER G,et al.Effect of type of reinforcing particles on the deposition efficiency and wear resistance of low-pressure cold-sprayed metal matrix composite coatings[J].Surface & Coatings Technology,2017,324:190-200.
[4] MIRACLE D B.Metal matrix composites-from science to techn-ological significance[J].Composites Science & Technology,2005,65(15/16):2526-2540.
[5] 张玉波,郭荣鑫,夏海廷,等.WCp含量对粉末冶金Cu/WCp复合材料疲劳裂纹扩展行为的影响[J].材料工程,2017,45(1):85-92. ZHANG Y B,GUO R X,XIA H T,et al.Effect of WCp content on fatigue crack growth behavior of powder metallurgy Cu/WCp composites[J].Journal of Materials Engineering,2017,45(1):85-92.
[6] YE F X,HOJAMBERDIEY M,XU Y H,et al.Volume fraction effect of V8C7 particulates on impact toughness and wear performance of V8C7/Fe monolithic composites[J].Journal of Materials Engineering & Performance,2014,23(4):1402-1407.
[7] 张宁.WC颗粒增强钢基复合材料的组织及性能研究[D].徐州:中国矿业大学,2015. ZHANG N.Study on the microstructure and property of WC particulates reinforced steel matrix composites[D].Xuzhou:China University of Mining and Technology,2015.
[8] NARDONE V C,STRIFE J R,PREWO K M.Microstructurally toughened particulate-reinforced aluminum matrix composites[J].Metallurgical Transactions A,1991,22(1):171-182.
[9] 杨少锋,张炎,蔡云杰,等.三维网络结构Al2O3陶瓷/高铬铸铁复合材料干摩擦磨损性能[J].复合材料学报,2014,31(3):683-691. YANG S F, ZHANG Y,CAI Y J,et al.Dry friction and wear properties of 3D-meshy Al2O3 ceramic reinforced high chromium iron composites[J].Acta Materiae Compositae Sinica,2014,31(3):683-691.
[10] QING S Y,ZHANG G D.Preparation of high fracture perfo-rmance SiCp-6061A1/6061A1 composite[J].Materials Science & Engineering:A,2000,279(1/2):231-236.
[11] 赵馨月.陶瓷颗粒增强钢基复合材料/钢三维互穿网络结构材料的制备及性能初探[D].昆明:昆明理工大学,2016. ZHAO X Y.Preparation and investigation of 3D-MMCs/steel composites with interpenetrating Bi-continuous structure[D].Kunming:Kunming University of Science and Technology,2016.
[12] CURREY J D,KOHN A J.Fracture in the crossed-lamellar structure of conus shells[J].Journal of Material Science,1976,11(9):1615-1623.
[13] 刘德建,陈彦宾,李福泉,等.激光熔注法制备WC颗粒增强金属基复合材料层[J].中国激光,2008,35(7):1083-1086. LIU D J,CHEN Y B,LI F Q,et al.WC particulate reinforced metal matrix composites layers produced by laser melt injection[J].Chinese Journal of Lasers,2008,35(7):1083-1086.
[14] 郭龙龙,郑华林,李悦钦,等.热丝脉冲TIG堆焊Inconel625的组织及性能[J].中国表面工程,2016,29(2):77-84. GUO L L,ZHENG H L,LI Y Q,et al.Microstructure and performance of Inconel625 cladding deposited by hot wire pulsed TIG[J].China Surface Engineering,2016,29(2):77-84.
[15] 邓守军,孙乐民,张永振.磨损机理的变迁与现状[J].机械研究与应用,2004,17(6):10-11. DENG S J,SUN Y M,ZHANG Y Z.The changes and present status of wear mechanism[J].Mechanical Research and Application, 2004,17(6):10-11.
[16] HUANG S W,SAMANDI M,BRANDT M.Abrasive wear performance and microstructure of laser clad WC/Ni layers[J].Wear,2004,256(11/12):1095-1105.
2019, Vol. 47 
