Transactions of Materials and Heat Treatment

Title：Microstructure and performance characteristics on laser cladding layer for Co-based alloy with different B contents

Authors： Zhang Zhibin1 Shu Fengyuan2 Wang Huipeng3 Zhu Penghua3

Unit： 1.Defense Innovation Institute Academy of Military Science 2.School of Chemical Engineering and Technology Sun Yat-sen University 3.School of Mechanical and Electrical Engineering Jiangxi University of Science and Technology

KeyWords： laser cladding Co-based alloy powder B content microstructure friction and wear

ClassificationCode：TG139；TH16

year,vol(issue):pagenumber：2022,47(9):218-223

Abstract：

To improve the surface properties of H13 die steel, a layer of Co-based alloy powder was clad on its surface by laser, and the microstructure and mechanical properties of the cladding layer were analyzed. The results show that the microstructure of the cladding layer is mainly composed of Cr2Ni3, Fe2B, γ-Co and Co3B components. With the increasing of B content the crystalline phases of Fe, Cr and Co elements decrease, B compound increases. And from the bottom to the top of the cladding layer, B compound increases. The surfaces of the cladding layer for the samples with the B content of 7% and 19% in the alloy powder have excellent wear resistance property. Under the same wear conditions, the wear rate is low, and the wear type is mainly abrasive wear. However, the cladding layers of the samples with the B content of 11% and 15% are severely worn, and the wear types are mainly adhesive wear + peeling wear + oxidation wear. Furthermore, a large number of pores appear in the cladding layer, which reduce the wear resistance property, increase the friction factor, and increase the wear loss. When the B content is 19%, the cladding layer has a lot of cracks. Thus, comprehensive consideration, when the B content is 7%, the microstructure and performance of the cladding layer are the best.

Funds：

国家自然科学基金青年基金资助项目（51905126）;北京市自然科学基金资助项目（2212055）

张志彬（1982-），男，博士，副研究员 E-mail：eacbia@163.com 通信作者：王慧鹏（1983-），男，博士，讲师 E-mail：wanghuipeng1983@126.com

Reference：

[1]Ryan D, Crawford C, Jim F, et al. Remanufacture of hot forging dies by LMD-p using a cobalt based hard-facing alloy[J]. BHM Berg-und Hüttenmnnische Monatshefte, 2021(prepublish).Doi:10.1007/S00501-021-01108-Z.

[2]陈再枝，蓝德年. 模具钢手册[M]. 北京: 冶金工业出版社，2002.

Chen Z Z, Lan D N. Handbook of Die Steel [M]. Beijing: Metallurgical Industry Press, 2002.

[3]姚迪，李晶，何新波，等. 国内热作模具材料发展现状[J]. 工程技术研究，2014,(4): 48-50.

Yao D, Li J, He X B, et al. Development situation of domestic hot working dies material[J]. Engineering and Technological Research，2014，(4):48-50.

[4]刘立君，刘大宇，崔元彪，等. 模具磨损表面激光熔覆修复层的数值模拟技术[J]. 电焊机，2020，50(7): 46-52,149.

Liu L J, Liu D Y, Cui Y B, et al. Numerical sim ulation technology of laser cladding repair layer on wear surface of die[J]. Electric Welding Machine, 2020, 50(7):46-52,149.

[5]Fu Y L，Guo N, Zhou C, et al. Investigation on in-situ laser cladding coating of the 304 stainless steel in water environment[J]. Journal of Materials Processing Tech., 2021，289 (prepublish).Doi:10.1016/j.jmatprotec.2020.116949.

[6]Heigel J, Michaleris P, Palmer T. In situ monitoring and characterization of distortion during laser cladding of Inconel 625[J]. Journal of Materials Processing Technology, 2015, 220:135-145.

[7]Jiang W, Li Y Y, Guo F L，et al. Optimization of laser repair parameters for precracked 304 stainless steel components with nanocomposites addition[J]. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2020，234(9):1280-1288.

[8]封亚明，何柏林，江明明，等. 表面技术在模具制造和修复中的应用[J]. 热加工工艺，2018，47(4): 30-34.

Feng Y M, He B L, Jiang M M, et al. Application of surface technology in manufacture and repair of die[J]. Hot Working Technology, 2018, 47(4):30-34.

[9]李绍宏，何文超，张旭，等. H13型热作模具钢表面改性技术研究进展[J]. 钢铁，2021，56(3): 13-22,40.

Li S H, He W C, Zhang X, et al. Research progress on surface treatment technologies of H13 hot work die steel[J]. Iron and Steel, 2021, 56(3):13-22,40.

[10]张津超，石世宏，龚燕琪，等. 激光熔覆技术研究进展[J]. 表面技术，2020，49(10): 1-11.

Zhang J C, Shi S H, Gong Y Q, et al. Research progress of laser cladding technology[J]. Surface Technology, 2020, 49(10):1-11.

[11]尹燕，潘存良，赵超，等. 激光熔覆高铬铁基合金的组织形成机制及对显微硬度的影响[J]. 焊接学报，2019, 40(7): 114-120,166.

Yin Y, Pan C L, Zhao C, et al. Formation mechanism of microstructure of laser cladding high chromium Fe-based alloy and its effect on microhardness[J]. Transactions of the China Welding Institution, 2019, 40(7):114-120,166.

[12]Su Y P, Yue T M. Microstructures of the bonding area in laser cladded Zr-based amorphous alloy coating on magnesium[J]. Materials Today Communications，2020, 25(prepublish).Doi:10.1016/j.mtcomm.2020.101715.

[13]Zhao J, Gao Q W, Wang H Q, et al. Microstructure and mechanical properties of Co-based alloy coatings fabricated by laser cladding and plasma arc spray welding[J]. Journal of Alloys and Compounds，2019，785:846-854.

[14]崔陆军，于计划，曹衍龙，等. 多道搭接钴基合金激光熔覆层的组织与性能[J]. 金属热处理，2020，45(3): 41-45.

Cui L J, Yu J H, Cao Y L, et al. Microstructure and properties of multi-track joint Co-based alloy laser clad layer[J]. Heat Treatment of Metals, 2020, 45(3): 41 - 45.

[15]余廷，张子翔，饶锡新，等. 激光熔覆Stellite 6涂层的高温摩擦行为[J]. 激光与光电子学进展，2019，56(14): 184-190.

Yu T, Zhang Z X, Rang X X, et al. High-temperature wear behavior of laser-cladding Stellite 6 coating[J].Laser & Optoelectronics Progress, 2019, 56(14): 184-190.

Service：

【This site has not yet opened Download Service】【Add Favorite】