Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding

doi:10.1155/2019/9308294

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	Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding
	Liu H(刘昊); Chen PJ(陈培见); Yang HF ; Hao JB ; Tian XH ; He XL(何秀丽); Yu G(虞钢)
发表期刊	JOURNAL OF SPECTROSCOPY
	2019-02-17
页码	AR9308294
ISSN	2314-4920
摘要	Cast iron is an iron-carbon alloy widely used in mechanical engineering. Nickel-base or cobalt-base alloy coatings prepared by laser cladding can improve the surface properties of cast iron, thereby increasing the service life of the components; however, due to the poor weldability and high carbon content of cast iron, the use of laser cladding to prepare alloy coatings faces many difficulties. To reduce the brittleness of the bonded interface, laser cladding was applied to the surface of cast iron using a multilayer deposition strategy. Through testing of the single-track laser cladding, the causes of defects in the coating are analysed, including poor bonding, slag inclusions, and pores. An analytical model based on mass and heat conservation is developed, and a processing window of laser tracks without defects is determined thereby. NiCoCrAlY alloy coating prepared by overlapping laser tracks mainly consists of -(Fe, Ni) dendrites and interdendritic M7C3 and M23C6 carbides. Although there are no cracks in a single laser track, cracks are detected when laser tracks are overlapped under the same process parameters. The increase in laser power helps to reduce cracking susceptibility on this occasion. The morphology of the grain in NiCoCrAlY alloy coating is mainly epitaxially grown columnar crystals. The increase in microhardness of the coating is mainly attributed to ductile dendrites, precipitated carbides, and grain refinement.
DOI	10.1155/2019/9308294
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000460252700001
关键词[WOS]	DUCTILE IRON ; WEAR-RESISTANCE ; BEHAVIOR ; ALLOY ; STRESS
WOS研究方向	Biochemical Research Methods ; Spectroscopy
WOS类目	Biochemistry & Molecular Biology ; Spectroscopy
项目资助者	Natural Science Foundation of Jiangsu Province [BK20160258] ; China Postdoctoral Science Foundation [2015M581881] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
论文分区	Q3
力学所作者排名	5+
RpAuthor	Liu, H ; Liu, H
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/78496
专题	先进制造工艺力学实验室
作者单位	1.{Liu, Hao、Yang, Haifeng、Hao, Jingbin、Tian, Xianhua} China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou, Jiangsu, Peoples R China 2.{Liu, Hao} China Univ Min & Technol, Jiangsu Key Lab Mine Mech & Elect Equipment, Xuzhou, Jiangsu, Peoples R China 3.{Chen, Peijian} China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou, Jiangsu, Peoples R China 4.{He, Xiuli、Yu, Gang} Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing, Peoples R China 5.{He, Xiuli、Yu, Gang} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu H,Chen PJ,Yang HF,et al. Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding[J]. JOURNAL OF SPECTROSCOPY,2019:AR9308294.
APA	刘昊.,陈培见.,Yang HF.,Hao JB.,Tian XH.,...&虞钢.(2019).Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding.JOURNAL OF SPECTROSCOPY,AR9308294.
MLA	刘昊,et al."Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding".JOURNAL OF SPECTROSCOPY (2019):AR9308294.

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