A diffusion driven carburisation combined with a multiaxial continuum creep model to predict random multiple cracking in engineering alloys

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Title: A diffusion driven carburisation combined with a multiaxial continuum creep model to predict random multiple cracking in engineering alloys
Author(s): Biglari, FR
Nikbin, KM
Item Type: Journal Article
Abstract: A diffusion-based coupled oxidation, intergranular damage and multisite randomised crack growth model for environmentally assisted oxidation/carburisation and creep time dependent material is proposed. A combined grain boundary and grain mesh structure is employed for simulating surface hardening and intergranular cracking resulting from a surface gas/solid carbon diffusion and bulk creep interaction by assuming variations in their strength ratios. Using 316H properties at 550° C the predicted surface intergranular cracks, due to both carburisation and creep, and subsequent crack growth are analysed in terms of their rupture and failure strains are compared to as received 316H data to validate the model.
Publication Date: 31-Jul-2015
Date of Acceptance: 25-Jul-2015
URI: http://hdl.handle.net/10044/1/53358
DOI: https://dx.doi.org/10.1016/j.engfracmech.2015.07.057
ISSN: 0013-7944
Publisher: Elsevier
Start Page: 89
End Page: 108
Journal / Book Title: Engineering Fracture Mechanics
Volume: 146
Copyright Statement: © 2015 Published by Elsevier Ltd. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Royal Academy Of Engineering
Innovate UK
British Energy PLC
Funder's Grant Number: N/A
101435
Agreement 4600075322
Keywords: MD Multidisciplinary
Mechanical Engineering & Transports
Publication Status: Published
Appears in Collections:Faculty of Engineering
Mechanical Engineering



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