Chakraborty, Suman and Dutta, Pradip (2002) Numerical modeling of heat and mass transfer in laser surface alloying: Non-equilibrium solidification effects. In: Materials and Manufacturing Processes, 17 (4). 455-468 .
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A transient macroscopic model is developed for studying heat and mass transfer in a single-pass laser surface alloying process, with particular emphasis on non-equilibrium solidification considerations. The solution for species concentration distribution requires suitable treatment of non-equilibrium mass transfer conditions. In this context, microscopic features pertaining to non-equilibrium effects on account of solutal undercooling are incorporated through the formulation of a modified partition-coefficient. The effective partition-coefficient is numerically modeled by Means of a number of macroscopically observable parameters related to the solidifying domain. The numerical model is so developed that the modifications on account of non-equilibrium solidification considerations can be conveniently implemented in existing numerical codes based on equilibrium solidification considerations.
| Item Type: | Journal Article |
|---|---|
| Publication: | Materials and Manufacturing Processes |
| Publisher: | Taylor and Francis Group |
| Additional Information: | Copyright of this article belongs to Taylor and Francis Group. |
| Keywords: | Modeling;Laser;Surface alloying;Single-pass;Non-equilibrium; Solutal undercooling;Solidification;Heat and mass transfer |
| Department/Centre: | Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 21 Jul 2011 06:07 |
| Last Modified: | 21 Jul 2011 06:07 |
| URI: | http://eprints.iisc.ac.in/id/eprint/39311 |
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