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

Gao, Weimin, Kong, Lingxue and Hodgson, Peter 2009, Integral approach and numerical improvement to calculate the carbon concentration profiles in carburising process, in AMPT 2009 : Forging a better future, AMPT Committees, Kuala Lumpur, Malaysia, pp. 1 (ID332)-14.

Document type: Conference Paper
Collection: Centre for Material and Fibre Innovation
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Title Integral approach and numerical improvement to calculate the carbon concentration profiles in carburising process
Author(s) Gao, Weimin
Kong, Lingxue
Hodgson, Peter
Conference name Advances in Materials and Processing Technologies Conference (2009 : Kuala Lumpur, Malyasia)
Conference location Kuala Lumpur, Malaysia
Conference dates 26-29 October 2009
Title of proceedings AMPT 2009 : Forging a better future
Publication date 2009
Start page 1 (ID332)
End page 14
Publisher AMPT Committees
Place of publication Kuala Lumpur, Malaysia
Keyword(s) carburising
diffusion
integral method
diffusivity
mass transfer coefficient
Summary In the present work, 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 ie. 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.
Notes Original work
Language eng
Field of Research 091207 Metals and Alloy Materials
091505 Heat and Mass Transfer Operations
080110 Simulation and Modelling
Socio Economic Objective 869999 Manufacturing not elsewhere classified
HERDC Research category E2 Full written paper - non-refereed / Abstract reviewed
HERDC collection year 2009
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021403
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Created: Tue, 15 Dec 2009, 13:08:08 EST by Weimin Gao