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EnglishThe 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.
| Titolo: | Development and Validation of a Dynamic and Static Recrystallization Model for Microstructural Prediction of AA6060 Aluminum Alloy with Qform |
| Autore/i: | BANDINI, CLAUDIA; REGGIANI, BARBARA; DONATI, LORENZO; TOMESANI, LUCA |
| Autore/i Unibo: | |
| Anno: | 2016 |
| Titolo del libro: | Proceedings of the Eleventh International Aluminum Extrusion Technology Seminar & Exposition – ET ’16 |
| Pagina iniziale: | 789 |
| Pagina finale: | 800 |
| 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. |
| Data stato definitivo: | 19-mag-2017 |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
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