Detalle Publicación

Effect of the strain reversal on austenite-ferrite phase transformation in a Nb-microalloyed steel

Autores: Lanzagorta, J.L.; Jorge Badiola, Denis; Gutiérrez Sanz, Isabel
Título de la revista: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN: 0921-5093
Volumen: 527
Número: 42494
Páginas: 934 - 940
Fecha de publicación: 2010
Resumen:
Multipass torsion tests were performed on an Nb-microalloyed steel at decreasing temperatures so as to analyze the effect of strain reversal - in the strain accumulation region - on the gamma -> alpha transformation kinetics. Strain reversal involved a significant delay in the start of the transformation as well as a microstructural transient compared to monotonic strain conditions. However, after several passes with no reversal performed within the inter-critical temperature region, both types of tests led to similar microstructures. (C) 2009 Elsevier B.V. All rights reserved.