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Microstructural Evolution During Hot Rolling of an AZ31 Mg Alloy

AutorValle, Jorge del; Pérez Prado, María Teresa; Ruano, Oscar Antonio
Palabras claveAZ31 Mg Alloy
Cross rolling
Recrystallization
Texture
Twinning
Unidirectional rolling
Fecha de publicaciónago-2003
EditorTrans Tech Publications
CitaciónMaterials Science Forum 426-432 : 637-642 (2003)
ResumenThe microstructural evolution of a AZ31 Mg alloy during hot rolling has been investigated using optical microscopy and texture (macro and micro) analysis as the main characterization tools. In particular, the differences between the microstructure obtained by unidirectional rolling (UR) and cross rolling (CR) are studied. Significant twinning activity is observed in both cases. Additionally, after cross rolling, a rather heterogeneous microstructure develops, with scattered regions populated by very fine grains. The strong basal fiber texture of the as-received material remains present after both hot rolling schemes. The imposibility to obtain accurate EBSD measurements within the twinned regions suggests that significant localized deformation takes place in those areas. Thus, due to the increase in the local strain energy, these regions become preferential sites for nucleation of recrystallization.
Versión del editorhttp://dx.doi.org/10.4028/www.scientific.net/MSF.426-432.637
URIhttp://hdl.handle.net/10261/45020
DOI10.4028/www.scientific.net/MSF.426-432.637
ISSN0255-5476
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