In situ observation of the formation of intragranular acicular ferrite at non-metallic inclusions in C–Mn steel / Di Zhang in Acta materialia, Vol. 58 N° 4 (Fevrier 2010)  

Public ISBD [article]  inActa materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1369–1378 Titre : In situ observation of the formation of intragranular acicular ferrite at non-metallic inclusions in C–Mn steel Type de document : texte imprimé Auteurs : Di Zhang, Auteur ; Hidenori Terasaki, Auteur ; Yu-ichi Komizo, Auteur Année de publication : 2011 Article en page(s) : pp. 1369–1378 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : In situ observation Nucleation and growth Intragranular acicular ferrite Phase transformation Steels Résumé : Intragranular acicular ferrite is regarded as a most desirable microstructure feature, in view of its strength and toughness, both in weld metals and in the heat-affected zone. This paper systematically investigated the effect of Ti addition on the evolution of intragranular acicular ferrite in the heat-affected zone of C–Mn steel. We also systematically studied the effects of austenite grain size, alloy content and the characteristic of inclusions on the formation of intragranular acicular ferrite. The nucleation and growth of intragranular acicular ferrite was directly observed by laser scanning confocal microscopy. Subsequently, microscopy analysis was used to quantitatively determine and distinguish the potent and inactive inclusions with respect to the nucleation of intragranular acicular ferrite. Finally, some possible reasons are given to explain the formation of intragranular acicular ferrite in the C–Mn steel. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007460#cor1 [article] In situ observation of the formation of intragranular acicular ferrite at non-metallic inclusions in C–Mn steel [texte imprimé] / Di Zhang, Auteur ; Hidenori Terasaki, Auteur ; Yu-ichi Komizo, Auteur . - 2011 . - pp. 1369–1378. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 4 (Fevrier 2010) . - pp. 1369–1378 Mots-clés : In situ observation Nucleation and growth Intragranular acicular ferrite Phase transformation Steels Résumé : Intragranular acicular ferrite is regarded as a most desirable microstructure feature, in view of its strength and toughness, both in weld metals and in the heat-affected zone. This paper systematically investigated the effect of Ti addition on the evolution of intragranular acicular ferrite in the heat-affected zone of C–Mn steel. We also systematically studied the effects of austenite grain size, alloy content and the characteristic of inclusions on the formation of intragranular acicular ferrite. The nucleation and growth of intragranular acicular ferrite was directly observed by laser scanning confocal microscopy. Subsequently, microscopy analysis was used to quantitatively determine and distinguish the potent and inactive inclusions with respect to the nucleation of intragranular acicular ferrite. Finally, some possible reasons are given to explain the formation of intragranular acicular ferrite in the C–Mn steel. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007460#cor1

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