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Integral approach and numerical improvement to calculate carbon concentration profiles in carburising

Gao, W. M., Kong, L. X. and Hodgson, P. D. 2011, Integral approach and numerical improvement to calculate carbon concentration profiles in carburising, Advanced materials research, vol. 264-265, pp. 1494-1499.

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Title Integral approach and numerical improvement to calculate carbon concentration profiles in carburising
Author(s) Gao, W. M.
Kong, L. X.ORCID iD for Kong, L. X. orcid.org/0000-0001-6219-3897
Hodgson, P. D.
Journal name Advanced materials research
Volume number 264-265
Start page 1494
End page 1499
Total pages 7
Publisher Trans Tech Publications
Place of publication Lausanne, Switzerland
Publication date 2011
ISSN 1022-6680
Keyword(s) carburising
diffusion
diffusivity
integral method
numerical simulation
Summary The carbon diffusion in steel, where the carbon diffusivity varies with the carbon content, was solved with the integral methods under the third boundary condition. The variation of carbon diffusivity in steel with the carbon content was described with two different functions, linear dependence and exponential dependence. The integral approximation for both cases was improved with the numerical computation to more accurately predict the carbon profiles. The integral solution is more accurate than the formulation based on the assumption of a constant diffusivity or those based on the assumption of a constant diffusivity and/or constant carbon content at part surface. It is also more easily used in practice than the numerical method to describe the carburising process and predict the carbon content at steel surface and carbon profiles in treated layer.
Language eng
Field of Research 091207 Metals and Alloy Materials
091505 Heat and Mass Transfer Operations
091006 Manufacturing Processes and Technologies (excl Textiles)
Socio Economic Objective 861201 Coated Metal and Metal-Coated Products
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044386

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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