Deformation and fracture, during cooling, of the alumina scale developed on Fe3Al

Griffin, D., Daadbin, Ali and Datta, Psantu (2000) Deformation and fracture, during cooling, of the alumina scale developed on Fe3Al. Surface and Coatings Technology, 126 (2-3). pp. 142-151. ISSN 0257 8972

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Official URL: http://dx.doi.org/10.1016/S0257-8972(00)00528-4

Abstract

The deformation and fracture, during cooling, of oxide scales developed on Fe3Al has been modelled using finite element analysis (FEA). Embedded defects were introduced at the oxide surface and at the oxide/substrate interface; the propagation of these defects and the influence of such propagation on scale spallation was analysed under both elastic and elastic plastic conditions. Stress relaxation associated with the plastic deformation of the substrate delayed scale spallation as indicated by the greater temperature drop required to cause spallation. In this situation, the presence of the oxide surface crack influenced scale spallation in a complex manner. The oxide surface crack did not influence the scale spallation process for the linear elastic analysis, which was solely controlled by the interfacial defect.

Item Type: Article
Uncontrolled Keywords: Deformation, finite element analysis, scale fracture, spallation
Subjects: F200 Materials Science
J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Becky Skoyles
Date Deposited: 13 Feb 2015 16:18
Last Modified: 10 Aug 2015 11:39
URI: http://nrl.northumbria.ac.uk/id/eprint/19178

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