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Deformation of oxide scales on Fe-20Cr alloy under compressive stress / C. H. Zhou in Materials and corrosion, Vol. 61 N° 8 (Août 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 8 (Août 2010) . - pp. 676–680 Titre : Deformation of oxide scales on Fe-20Cr alloy under compressive stress Type de document : texte imprimé Auteurs : C. H. Zhou, Auteur ; H. T. Ma, Auteur ; L. Wang, Auteur Année de publication : 2010 Article en page(s) : pp. 676–680 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Compressive  stress;  deformation;  gain  boundary  sliding;  oxide  scale;  slip Résumé : The behavior of oxide scales on Fe-20Cr alloy was investigated in constant load at 1173 K in air. The objective was to understand the effect of mechanical loading on the deformation of oxide scales. It was carried out mainly by comparison of surface morphologies of oxidized specimens observed by scanning electronic microscope (SEM). In all cases, the oxide scales formed on specimens without stress showed a flat surface. However, oxide scales formed on specimens after 20 h of oxidation under a stress of 8 MPa (strain 3.07%) showed slip band characteristics. Furthermore, for longer oxidation time up to 65 h, slip bands formed under a low stress of 2 MPa (strain 1.19%), and grain boundary sliding became the main surface feature for the specimens subjected to a stress of 5 MPa (strain 2.53%). Two typical deformation forms are illustrated in the work. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905292/abstract [article] Deformation of oxide scales on Fe-20Cr alloy under compressive stress [texte imprimé] / C. H. Zhou, Auteur ; H. T. Ma, Auteur ; L. Wang, Auteur . - 2010 . - pp. 676–680. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 8 (Août 2010) . - pp. 676–680 Mots-clés : Compressive  stress;  deformation;  gain  boundary  sliding;  oxide  scale;  slip Résumé : The behavior of oxide scales on Fe-20Cr alloy was investigated in constant load at 1173 K in air. The objective was to understand the effect of mechanical loading on the deformation of oxide scales. It was carried out mainly by comparison of surface morphologies of oxidized specimens observed by scanning electronic microscope (SEM). In all cases, the oxide scales formed on specimens without stress showed a flat surface. However, oxide scales formed on specimens after 20 h of oxidation under a stress of 8 MPa (strain 3.07%) showed slip band characteristics. Furthermore, for longer oxidation time up to 65 h, slip bands formed under a low stress of 2 MPa (strain 1.19%), and grain boundary sliding became the main surface feature for the specimens subjected to a stress of 5 MPa (strain 2.53%). Two typical deformation forms are illustrated in the work. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905292/abstract