| Titre : | Precipitation in Fe–15Cr–1Nb alloys after oxygenation (2011) |
| Auteurs : | A. Malfliet, Auteur ; F. Verhaeghe, Auteur ; F. Chassagne, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 11, Juin 2010) |
| Article en page(s) : | pp. 3832–3841 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | 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 |
