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Influence of microstructure on mechanical properties and corrosion behavior of 3%Cr steel in CO2 environment / L. N. Xu in Materials and corrosion, Vol. 63 N° 11 (Novembre 2012) 

Public ISBD [article]  in Materials and corrosion > Vol. 63 N° 11 (Novembre 2012) . - pp. 997–1003 Titre : Influence of microstructure on mechanical properties and corrosion behavior of 3%Cr steel in CO2 environment Type de document : texte imprimé Auteurs : L. N. Xu, Auteur ; S. Q. Guo, Auteur ; C. L. Gao, Auteur Année de publication : 2014 Article en page(s) : pp. 997–1003 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Chromium  bearing  steel;  CO2  corrosion;  corrosion  behavior;  mechanical  property;  microstructure Résumé : Corrosion behavior and mechanical properties of two 3%Cr pipeline steels were studied which have same chemical compositions but different microstructures, bainite-ferrite and ferrite-pearlite microstructures. Analysis of chemical compositions and surface morphology of the corrosion scale were performed using X-ray diffraction and scanning electron microscopy in conjunction with energy dispersive X-ray spectroscopy. The semi-passive character of corrosion scale was investigated using polarization curves measurements. The influence of microstructure on the chromium enrichment in the corrosion scale for different test periods was investigated. The microstructure was observed to affect the corrosion behavior even when the steel surface has been covered with corrosion scales and continue to have an effect until the corrosion scale possessing semi-passive character. Possessing both good strength and corrosion resistance, 3%Cr steel with bainite-ferrite microstructure was very promising for pipeline steel applications. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106389/abstract [article] Influence of microstructure on mechanical properties and corrosion behavior of 3%Cr steel in CO2 environment [texte imprimé] / L. N. Xu, Auteur ; S. Q. Guo, Auteur ; C. L. Gao, Auteur . - 2014 . - pp. 997–1003. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 63 N° 11 (Novembre 2012) . - pp. 997–1003 Mots-clés : Chromium  bearing  steel;  CO2  corrosion;  corrosion  behavior;  mechanical  property;  microstructure Résumé : Corrosion behavior and mechanical properties of two 3%Cr pipeline steels were studied which have same chemical compositions but different microstructures, bainite-ferrite and ferrite-pearlite microstructures. Analysis of chemical compositions and surface morphology of the corrosion scale were performed using X-ray diffraction and scanning electron microscopy in conjunction with energy dispersive X-ray spectroscopy. The semi-passive character of corrosion scale was investigated using polarization curves measurements. The influence of microstructure on the chromium enrichment in the corrosion scale for different test periods was investigated. The microstructure was observed to affect the corrosion behavior even when the steel surface has been covered with corrosion scales and continue to have an effect until the corrosion scale possessing semi-passive character. Possessing both good strength and corrosion resistance, 3%Cr steel with bainite-ferrite microstructure was very promising for pipeline steel applications. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.201106389/abstract