QQ客服 官方微博 反馈留言

	STUDY ON WEAR RESISTANCE OF LASER CALDDING Fe-BASED COMPOSITE COATINGS REINFORCED BY IN-SITU MULTIPLE CARBIDE PARTICLES
	Wu Chaofeng ; Ma Mingxing ; Liu Wenjin ; Zhong Minlin ; Zhang Weiming ; Zhang Hongjun
	2010-10-12 ; 2010-10-12
关键词	laser cladding particle reinforced multiple carbide Fe-based composite coating wear resistance CAST-IRON MICROSTRUCTURE Metallurgy & Metallurgical Engineering
中文摘要	Particle reinforced metal matrix composites (PR-MMCs) have attracted extensive investigation in material science and engineering. They combine both strength and toughness and show excellent properties such as good wear resistance, corrosion resistance and high temperature properties. Laser depositing of metal matrix composite coatings containing in-situ carbide particles is a research focus in laser surface processing. The essential advantage of the in-situ synthesis technology is that the reinforcements are much more compatible with the matrix and the interface between the reinforcements and the matrix is much cleaner. It has a special advantage in high distribution density and dimension uniformity to in-situ synthesize particles by laser melting precursor powders containing several strong carbide-forming elements (SCFEs) rather than one. Each SCFE has significant effects on the precipitation and distribution of the carbide particles. To investigate the microstructure and properties of the cladded layers, in this paper, the coatings were produced by laser cladding powders containing 2%Ti, 1%Ti+1%Zr and 1%Ti+1%Zr+10%WC (mass fraction) respectively on the surface of a medium carbon steel. The microstructure of the coatings and the carbide particles were studied by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the microstructure of the coatings is typically hypo-eutectic. The in-situ particles have a TiC structure with high content of Zr or W when 1%Ti+1%Zr and 1%Ti+1%Zr+10%WC are added into the cladded powders. Therefore, they are multiple carbides. The interface between the particle and the base material is strong. The optimized distribution of the particles with high distribution density (2x10(4) mm(-2)) and high dimension uniformity (about 1 mu m) are obtained when 1%Ti+1%Zr+10%WC are added. The wear resistance of the coating was tested through ring-on-block wear experiment. It is indicated that laser cladding Fe-based composite coating reinforced by in-situ multiple carbide particles presents excellent wear resistance.
语种	中文 ; 中文
出版者	SCIENCE PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80602]
专题	清华大学
推荐引用方式 GB/T 7714	Wu Chaofeng,Ma Mingxing,Liu Wenjin,et al. STUDY ON WEAR RESISTANCE OF LASER CALDDING Fe-BASED COMPOSITE COATINGS REINFORCED BY IN-SITU MULTIPLE CARBIDE PARTICLES[J],2010, 2010.
APA	Wu Chaofeng,Ma Mingxing,Liu Wenjin,Zhong Minlin,Zhang Weiming,&Zhang Hongjun.(2010).STUDY ON WEAR RESISTANCE OF LASER CALDDING Fe-BASED COMPOSITE COATINGS REINFORCED BY IN-SITU MULTIPLE CARBIDE PARTICLES..
MLA	Wu Chaofeng,et al."STUDY ON WEAR RESISTANCE OF LASER CALDDING Fe-BASED COMPOSITE COATINGS REINFORCED BY IN-SITU MULTIPLE CARBIDE PARTICLES".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。