Dependence of martensite start temperature on fine austenite grain size

• DOI: 10.1016/j.scriptamat.2007.09.017
• Publication Date: 2007-11-27T15:45:00Z
• Authors: A. García-Junceda; C. Capdevila; F.G. Caballero; C. García de Andrés
• Keywords: Martensite start temperature; 0205 materials engineering; 0203 mechanical engineering; 02 engineering and technology; Austenite grain size

Peer reviewed<br/>The authors acknowledge financial support from the European Union through the European Coal and Steel Community program (ECSC-7210-PR-349) and from the Spanish Ministerio de Educacio´n y Ciencia (Special Action MAT 2002-10808-E).<br/>It has been broadly reported that determination of the martensite start temperature in steels, Ms, requires a complete description of their chemical composition. Recently, several neural networks models considering both chemical composition and austenite grain size (AGS) have been developed. Such models predict a moderate dependence of Ms with AGS. The present work examines the validity of existing neural network models, but focusing on fine AGS (below 5 m).<br/>