Transport phenomena in laser surface alloying

Sarkar, S and Raj, Mohan P and Chakraborty, S and Phanikumar, G and Chattopadhyay, K and Dutta, P (2003) Transport phenomena in laser surface alloying. In: Journal of Materials Science, 38 (1). pp. 155-164.

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Abstract

A three dimensional, transient model is developed for studying heat transfer, fluid flow and mass transfer for the case of a single-pass laser surface alloying process. The numerical study is performed in a co-ordinate system fixed to the laser which moves with a constant scanning speed. The coupled momentum, energy and species conservation equations are solved using a finite volume technique. Phase change processes are modelled using a fixed-grid enthalpy-porosity technique, which is capable of predicting the continuously evolving solid-liquid interface. The three-dimensional model is able to predict the species concentration distribution inside the molten pool during alloying, as well as in the entire cross section of the solidified alloy. Corresponding experimental results show a good qualitative agreement with the numerical predictions with regard to pool shape and final composition distribution.

Item Type:	Journal Article
Publication:	Journal of Materials Science
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer Netherlands.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	02 Jun 2006
Last Modified:	19 Sep 2010 04:28
URI:	http://eprints.iisc.ac.in/id/eprint/7347

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