Influence of Y2O3 Content on Microstructure and Properties of Laser Cladding 0.3C-18Cr Alloy Coating

	Influence of Y2O3 Content on Microstructure and Properties of Laser Cladding 0.3C-18Cr Alloy Coating
	Guo Tieming 2; Pu Yabo 2; Zhang Ruihua 1; Li Zilin 1; Li Qiang 2
刊名	RARE METAL MATERIALS AND ENGINEERING
	2019-11
卷号	48 期号:11 页码:3643-3650
关键词	laser cladding Y2O3 content microstructure properties
ISSN号	1002-185X
英文摘要	0.3C18Cr composite coatings were prepared with different Y2O3 contents on 3Cr14 stainless steel substrate by laser cladding. The effects of different Y2O3 contents on the microstructure, phase composition and hardness of the cladding layer were studied by metallographic microscope (OM), scanning electron microscope (SEM), X-ray diffraction (XRD) and microhardness tester. The results show that there are many pores in the cladding layer without Y2O3 addition, and the microstructure of the cladding layer consists of intragranular ferrite, bainite distributed on grain boundary and a small amount of martensite; After Y2O3 addition, the dendrite length of the cladding layer decreases and the number decreases, the dendrite tip is passivated and radially roughened, the length to diameter ratio decreases, meanwhile the pores of the cladding layer decrease, and the cladding layer is purified. The microstructure of the cladding layer is composed of lath martensite and a small amount of bainite in the grain boundary. With the increase of Y2O3, the lath martensite is slightly coarsened, the number of bainite decreases obviously, the carbon concentration of bainite carbide increases, and the type of lamellar carbides transforms from low carbon carbide to high carbon carbide. After Y2O3 addition, the microhardness of the clad layer is significantly improved; When 2wt% Y2O3 is added, the hardening effect of the cladding layer comes up to the best; the hardness is 1600 MPa higher than that of the cladding layer without Y2O3.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	中文
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000500083600032
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/64130]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Guo Tieming
作者单位	1.Hardware Knife Cut Ind Technol Res Inst Yangjiang, Yangjiang 529533, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Guo Tieming,Pu Yabo,Zhang Ruihua,et al. Influence of Y2O3 Content on Microstructure and Properties of Laser Cladding 0.3C-18Cr Alloy Coating[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(11):3643-3650.
APA	Guo Tieming,Pu Yabo,Zhang Ruihua,Li Zilin,&Li Qiang.(2019).Influence of Y2O3 Content on Microstructure and Properties of Laser Cladding 0.3C-18Cr Alloy Coating.RARE METAL MATERIALS AND ENGINEERING,48(11),3643-3650.
MLA	Guo Tieming,et al."Influence of Y2O3 Content on Microstructure and Properties of Laser Cladding 0.3C-18Cr Alloy Coating".RARE METAL MATERIALS AND ENGINEERING 48.11(2019):3643-3650.