Precipitation in Fe–15Cr–1Nb alloys after oxygenation / A. Malfliet in Acta materialia, Vol. 58 N° 11 (Juin 2010)  

Public ISBD [article]  inActa materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 3832–3841 Titre : Precipitation in Fe–15Cr–1Nb alloys after oxygenation Type de document : texte imprimé Auteurs : A. Malfliet, Auteur ; F. Verhaeghe, Auteur ; F. Chassagne, Auteur Année de publication : 2011 Article en page(s) : pp. 3832–3841 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Stainless steels Ferritic Non-binary oxides Wavelength dispersive X-ray spectroscopy Résumé : The effect of O on the phase relations at 950 °C in Fe–15Cr–1Nb alloys is experimentally investigated. Fe–15Cr–1Nb alloys are oxygenated by subjecting high-purity Fe–15Cr–1Nb to an O atmosphere at 600 °C. Both the high-purity and the oxygenated Fe–15Cr–1Nb alloys are heat treated for up to 500 h at 950 °C, quenched and investigated by scanning electron microscopy, transmission electron microscopy and electron probe microanalysis. The results show that Fe2Nb is in equilibrium with α (Fe, Cr) with 0.29 at.% Nb in solid solution in the pure Fe–15Cr–1Nb alloy. The presence of a small amount of O induces the precipitation of a Fe6Nb6Ox phase with a cubic crystal structure and lattice parameter 1.13 nm, thereby decreasing the Nb in solid solution in α (Fe, Cr) with increasing O content. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410002089 [article] Precipitation in Fe–15Cr–1Nb alloys after oxygenation [texte imprimé] / A. Malfliet, Auteur ; F. Verhaeghe, Auteur ; F. Chassagne, Auteur . - 2011 . - pp. 3832–3841. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 11 (Juin 2010) . - pp. 3832–3841 Mots-clés : Stainless steels Ferritic Non-binary oxides Wavelength dispersive X-ray spectroscopy Résumé : The effect of O on the phase relations at 950 °C in Fe–15Cr–1Nb alloys is experimentally investigated. Fe–15Cr–1Nb alloys are oxygenated by subjecting high-purity Fe–15Cr–1Nb to an O atmosphere at 600 °C. Both the high-purity and the oxygenated Fe–15Cr–1Nb alloys are heat treated for up to 500 h at 950 °C, quenched and investigated by scanning electron microscopy, transmission electron microscopy and electron probe microanalysis. The results show that Fe2Nb is in equilibrium with α (Fe, Cr) with 0.29 at.% Nb in solid solution in the pure Fe–15Cr–1Nb alloy. The presence of a small amount of O induces the precipitation of a Fe6Nb6Ox phase with a cubic crystal structure and lattice parameter 1.13 nm, thereby decreasing the Nb in solid solution in α (Fe, Cr) with increasing O content. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410002089

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