The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings

doi:10.1016/j.jallcom.2018.05.230

	The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings
	Yin, Yan 1,2; Pan, Cunliang 1; Zhang, Ruihua 3,4; Zhao, Chao 1; Qu, Yuebo 3,4
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2018-10-15
卷号	765 页码:782-790
关键词	Laser cladding High chromium iron-based powders In-situ TiC Property
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2018.05.230
英文摘要	In this study, the coatings was fabricated on the 3Cr13 stainless steel substrate by laser cladding, and the high chromium iron-based powder mixed with different Ti content was used in the process. The effects of Ti additions on the microstructure, phase compositions, micro-hardness and corrosion resistance of the cladding layer were investigated systematically. The standard Gibbs free energy variation, phase composition, precipitation sequence and the two-dimensional lattice misfit were precisely calculated. The results show that the addition of titanium can not only changes the microstructure of the cladding layer, there is no difference in the phase composition of the coatings. However, there is a great change in the content of individual phase. But also reduces the thermal stress and prevents the occurrence of hot cracks. Due to the different temperature gradients, the microstructure near the fusion zone is mainly composed of flat crystals, cellular crystals and dendrites. The calculated results show that the in-situ TiC can refine the M7C3(M = Fe, Cr). Simultaneously, the M23C6 phase was not observed in the coatings contrasting with the equilibrium state, because the dynamics factors such as concentration and activity of solute atoms also determined the phase evolution process. With the Ti addition increases, there is no difference in the phase composition of the coatings. However, there is a great change in the content of individual phase. By contrast, when the proportion of added titanium is 3.0%, the coatings can obtain the desired properties and have a good metallurgical bond with the substrate. At the same time, the average micro-hardness of the coatings reaches 897 HV0.2, and the corrosion cracks are found. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	Laser Additive Manufacturing Technology and Industrialization of High-end Knives[2015B010123002]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000444341900096
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32393]
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	Pan, Cunliang
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 3.China Iron & Steel Res Inst Grp, Beijing 100081, Peoples R China 4.Hardware Knife Cut Ind Technol Res Inst Yangjiang, Yangjiang 529533, Peoples R China
推荐引用方式 GB/T 7714	Yin, Yan,Pan, Cunliang,Zhang, Ruihua,et al. The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,765:782-790.
APA	Yin, Yan,Pan, Cunliang,Zhang, Ruihua,Zhao, Chao,&Qu, Yuebo.(2018).The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings.JOURNAL OF ALLOYS AND COMPOUNDS,765,782-790.
MLA	Yin, Yan,et al."The effect of Ti addition on the microstructure and properties of high chromium iron-based coatings".JOURNAL OF ALLOYS AND COMPOUNDS 765(2018):782-790.