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Title: Amorphous structure in laser clad Ni-Cr-Al coating on Al-Si alloy
Authors: Liang, GY
Wong, TT
Su, JY
Woo, CH 
Issue Date: 2000
Publisher: Kluwer Academic Publishers, Dordrecht, Netherlands
Source: Journal of materials science letters, 2000, v. 19, no. 13, p. 1193-1196 How to cite?
Journal: Journal of Materials Science Letters 
Abstract: The morphologies and properties of amorphous structure in the laser clad Ni-Cr-Al coating are studied. Some Ni-rich amorphous structures exist in the laser clad Ni-Cr-Al coating on aluminum alloys. They exist in the net-like structure around granular structure and coexist with Ni 3Al phase in the granules. This amorphous structure exhibited a high crystallizing temperature. The hardness of the amorphous mixture region is between HV 600-800. Some amorphous structures exist in the laser cladding reduced the peeling of the granular phase from matrix and improve its wear resistance. The Ni-Cr-Al coating after laser cladding has higher microhardness and better surface quality on Al-Si alloys, and less cracks are found in the coatings.
ISSN: 0261-8028
DOI: 10.1023/A:1006727730339
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