Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13660
Title: Solidification behaviour and the evolution of microstructure in the laser cladding of aluminium on magnesium substrate
Authors: Yue, TM 
Li, T
Keywords: Cellular structure
Equiaxed crystal
Interface stability
Laser cladding
Solidification
Issue Date: 2007
Publisher: Japan Institute of Metals
Source: Materials transactions, 2007, v. 48, no. 5, p. 1064-1069 How to cite?
Journal: Materials transactions 
Abstract: Laser cladding of aluminium powders was performed on pure magnesium substrates using the blown powder method. The microstructure across the laser-clad track was studied. Starting from the bottom of the laser-clad to the top surface of the track, a series of microstructures was observed: a planar growth interface of the substrate, a narrow band of (β + γ) eutectic, a narrow band of β cellular structure, and finally a relatively thick layer of α-Al and (α + β) eutectic structure. The evolution of the various phases and microstructures is discussed in terms of the distribution of solute in conjunction with the Al-Mg phase diagram, temperature gradient and solidification rate, constitutional supercooling theory, and the condition for columnar-to-equiaxed crystal transition.
URI: http://hdl.handle.net/10397/13660
ISSN: 1345-9678
EISSN: 1347-5320
DOI: 10.2320/matertrans.48.1064
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