基于工业合金激光熔覆制备Fe基非晶涂层<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.016.020

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Abstract High-density amorphous coating with FeCoCrMoCBY bulk alloy as cladding material was fabricated by laser cladding on the surface of mild steel. The effect of different laser power on formation and microstructure of the coatings was discussed. The microhardness and corrosion resistance of the coating were tested by microhardness tester and electrochemical work station. The results show that the coatings of good formation and typically metallurgical bonding with the substrate is obtained,when laser power are changing from 17.6 W to 20.8 W with other parameter fixed. With the increase of laser power, the dilution rates go up, the tendency of cracks rise and the degree of amorphization decrease in the coating. When laser power is 17.6 W, the coating is mainly amorphous, the dilution rate is less than 24.2%, and the structure of the coating is dense, which includes heat affected zone, bon-ding zone and cladding zone. Moreover, the average microhardness of the coating is 1 330HV, which is about 9 times higher than the substrate. And the coating has more excellent corrosion resistance than 316L stainless steel in the 3.5% NaCl solution.

Key words： laser cladding industrial-grade alloy Fe-based amorphous coating laser power microstructure characterization

Published: 07 May 2018

CLC number:

TG174.4

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	Articles by authors
	GONG Yubing
	WANG Shanlin
	ZHANG Ziyang
	LI Hongxiang
	CHEN Yuhua

Cite this article:

GONG Yubing,WANG Shanlin,ZHANG Ziyang, et al. Fabrication of Amorphous Coating by Laser Cladding Using Industrial-grade Fe-based Alloy[J]. Materials Reports, 2017, 31(16): 98-102.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.016.020 OR http://www.mater-rep.com/EN/Y2017/V31/I16/98

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