The aim of the present work is to develop a model within Qform, a Lagrangian FE Code environment to predict the grain evolution of 6XXX aluminum alloys during deformation and subsequent static recrystallization. Experimental data were obtained from backward extrusion campaigns (AA6060-O and AA6082-O) that were performed at different conditions of temperature and strain rate. All the specimens were subjected to microstructural analysis in terms of grain size: before extrusion (initial grain size), immediately quenched after extrusion (evaluation of dynamic recrystallization) and after a full annealing heat treatment (evaluation of a fully static recrystallization). The regression between experimental data and FEM computation allowed to validate a theoretical model for the grain size and shape evolution during dynamic recrystallization of 6060 and 6082 alloys previously developed on a different experimental campaign and to implement and evaluate a static recrystallization model proposed in literature (by considering 100% of recrystallization only) on AA6060 alloy.
Bandini, C., Reggiani, B., Donati, L., Tomesani, L. (2016). Development and Validation of a Dynamic and Static Recrystallization Model for Microstructural Prediction of AA6060 Aluminum Alloy with Qform. Madison, Wisconsin : Omnipress.
Development and Validation of a Dynamic and Static Recrystallization Model for Microstructural Prediction of AA6060 Aluminum Alloy with Qform
BANDINI, CLAUDIA;REGGIANI, BARBARA;DONATI, LORENZO;TOMESANI, LUCA
2016
Abstract
The aim of the present work is to develop a model within Qform, a Lagrangian FE Code environment to predict the grain evolution of 6XXX aluminum alloys during deformation and subsequent static recrystallization. Experimental data were obtained from backward extrusion campaigns (AA6060-O and AA6082-O) that were performed at different conditions of temperature and strain rate. All the specimens were subjected to microstructural analysis in terms of grain size: before extrusion (initial grain size), immediately quenched after extrusion (evaluation of dynamic recrystallization) and after a full annealing heat treatment (evaluation of a fully static recrystallization). The regression between experimental data and FEM computation allowed to validate a theoretical model for the grain size and shape evolution during dynamic recrystallization of 6060 and 6082 alloys previously developed on a different experimental campaign and to implement and evaluate a static recrystallization model proposed in literature (by considering 100% of recrystallization only) on AA6060 alloy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
