On the elastic and creep stress analysis modeling in the oxide scale/metal substrate system due to oxidation growth strain

• Published in: Corrosion science 2013-01, Vol.66, p.315-323
• Main Authors: Ruan, J.L., Pei, Yongmao, Fang, Daining
• Format: Article
• Language: English
• Subjects: A. Alloy; A. Intermetallics; Applied sciences; B. Modeling studies; C. Effects of strain; C. Oxidation; Corrosion; Corrosion environments; Creep; Creep (materials); Curvature; Exact sciences and technology; Mathematical analysis; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Oxidation; Oxides; Scale (corrosion); Strain; Stresses
• ISSN: 0010-938X; 1879-0496
• DOI: 10.1016/j.corsci.2012.09.035

► The elastic analysis model results confirm the Clarke model. ► A novel simple determination method of growth parameter is proposed and validated. ► The creep analysis model can precisely describe the realistic stress evolutions. ► We find Clarke model can be applied to case considering creep relaxation phenomena. ► The work serves as a basis for experimental work on stress measurement. Considering the case of asymmetric oxidation, new elastic and creep analysis models are developed to elucidate the stress evolutions in an oxide scale/metal substrate system during isothermal oxidation, due to the oxidation growth strain in oxide scale. The theoretical works allow for the experimental inference of growth strain and stresses from the curvature measurements during oxidation. Moreover, they provide ways to explore and identify the main mechanisms for oxidation. Two sets of published experimental data are employed and analyzed by the elastic and creep analytical approaches. A novel simple determination method of the growth parameter is proposed and validated.