EBSD study of a hot deformed austenitic stainless steel

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.contributor	Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.contributor.author	Mirzadeh, H.
dc.contributor.author	Cabrera Marrero, José M.
dc.contributor.author	Najafizadeh, A.
dc.contributor.author	Rodríguez Calvillo, Pablo
dc.date	2012-01-18
dc.identifier.citation	Mirzadeh, H. [et al.]. EBSD study of a hot deformed austenitic stainless steel. "Materials science and engineering A. Structural materials properties microstructure and processing", 18 Gener 2012, vol. 538, p. 236-245.
dc.identifier.citation	0921-5093
dc.identifier.citation	10.1016/j.msea.2012.01.037
dc.identifier.uri	http://hdl.handle.net/2117/15681
dc.language.iso	eng
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials
dc.subject	Stainless steel
dc.subject	Hot working Electron back-scattered diffraction JMAK analysis Dynamic recrystallization Sigma3 annealing twin boundary Grain average misorientation
dc.subject	Acer inoxidable
dc.title	EBSD study of a hot deformed austenitic stainless steel
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The microstructural evolution of a 304 H austenitic stainless steel subjected to hot compression was studied by the electron backscattered diffraction (EBSD) technique. Detailed data about the boundaries, coincidence site lattice (CSL) relationships and grain size were acquired from the orientation imaging microscopy (OIM) maps. It was found that twins play an important role in the nucleation and growth of dynamic recrystallization (DRX) during hot deformation. Moreover, the conventional discontinuous DRX (DDRX) was found to be in charge of grain refinement reached under the testing conditions studied. Furthermore, the recrystallized fraction (X) was determined from the grain average misorientation (GAM) distribution based on the threshold value of 1.55°. The frequency of high angle boundaries showed a direct relationship with X. A time exponent of 1.11 was determined from Avrami analysis, which was related to the observed single-peak behavior in the stress–strain flow curves.
dc.description.abstract	Peer Reviewed

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