Effect of powder feeding rate on mass fraction of WC particles , microstructure evolution and micro-hardness of WC-Ni composite coating by laser cladding

doi:10.1016/j.jallcom.2024.178432

IMECH-IR > 宽域飞行工程科学与应用中心

	Effect of powder feeding rate on mass fraction of WC particles , microstructure evolution and micro-hardness of WC-Ni composite coating by laser cladding
	Bian YH(边艳华)1,3; Li SX(李少霞)1,3 ; Tian CX(田崇鑫)1,3 ; Chen B(陈博)1,3 ; Dong BX(董斌鑫)1,3; Shu Z(舒壮)1,3; Guo, Jianhao 4; He XL(何秀丽)1,2,3 ; Yu G(虞钢)1,2,3
通讯作者	He, Xiuli([email protected]) ; Yu, Gang([email protected])
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
	2025-01-31
卷号	1013 页码:14
ISSN	0925-8388
摘要	WC particle reinforced Ni-based composite coatings have excellent properties and can be widely employed to enhance the surface performance of metals by laser cladding technology. In this paper, the Ni60-WC composite coatings under different powder feeding rates are manufactured on H13 steel substrate using laser cladding (LC) technology. The morphology of the molten pool, interface between WC particles and the metal matrix, and the distribution of WC in laser-cladded Ni60-WC composite coatings have been thoroughly investigated. Additionally, the microstructure and microhardness of these coatings have been deeply studied. Moreover, special attention is paid to investigate the thermal damage forms of WC particles and its influence mechanism on the microstructure evolution. Due to the mismatch between laser energy input and powder mass addition, the dilution ratio is too high under the powder feeding rate of 5 g/min, and the mass fraction of WC in the composite coating is only 0.9 %, which is far lower than that of the original powder. In the Ni60-WC composite coating, gamma-(Ni, Fe) solid solution with some new precipitated carbides and borides such as FeW3C, CoW2B2, Ni4B3, Fe3B, M 23 C 6 and M12C can be found through XRD. The combined effects of fine grain hardening, solid solution hardening, precipitation hardening and dispersion hardening are the main reasons for the increase in micro- hardness of the Ni60-WC composite coating. When the powder feeding rate is 25 g/min, the maximum micro- hardness is 936HV, which is 2.4 times that of the H13 steel substrate. The microstructure characteristic is one of the main factors affecting microhardness, which is closely related to the mass fraction of WC, the thermal damage type of WC particles, and the solidification time of the composite coating. This paper provides an in-depth discussion of two thermal damage forms of WC particles, as well as the related microstructure characteristics and evolution mechanisms.
关键词	Laser cladding Ni60-WC composite coating Mass fraction of WC particles Microstructure evolution Microhardness
DOI	10.1016/j.jallcom.2024.178432
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001400605500001
关键词[WOS]	WEAR-RESISTANCE ; BEHAVIOR ; STEEL ; MICROHARDNESS ; DEPOSITION ; KINETICS ; MODEL ; SIZE
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助项目	National Key R & D Program of China[2023YFB4603701] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0910203] ; National Natural Science Foun-dation of China[12472123] ; Research Project of Guangdong Aero-space Research Academy[GARA2022001000]
项目资助者	National Key R & D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foun-dation of China ; Research Project of Guangdong Aero-space Research Academy
论文分区	一类
力学所作者排名	1
RpAuthor	He, Xiuli ; Yu, Gang
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/98202
专题	宽域飞行工程科学与应用中心
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.China Railway 14TH Bur Groupment Shield Construct, Nanjing 210000, Peoples R China
推荐引用方式 GB/T 7714	Bian YH,Li SX,Tian CX,et al. Effect of powder feeding rate on mass fraction of WC particles , microstructure evolution and micro-hardness of WC-Ni composite coating by laser cladding[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1013:14.Rp_Au:He, Xiuli, Yu, Gang
APA	边艳华.,李少霞.,田崇鑫.,陈博.,董斌鑫.,...&虞钢.(2025).Effect of powder feeding rate on mass fraction of WC particles , microstructure evolution and micro-hardness of WC-Ni composite coating by laser cladding.JOURNAL OF ALLOYS AND COMPOUNDS,1013,14.
MLA	边艳华,et al."Effect of powder feeding rate on mass fraction of WC particles , microstructure evolution and micro-hardness of WC-Ni composite coating by laser cladding".JOURNAL OF ALLOYS AND COMPOUNDS 1013(2025):14.