TY - JOUR

T1 - Investigation and prediction of grain texture evolution in AA6082

AU - Segatori, A.

AU - Foydl, Annika

AU - Lorenzo, Donati

AU - Khalifa, N. Ben

AU - Brosius, A.

AU - Tomesani, Luca

AU - Tekkaya, A. Erman

N1 - The 14th International Conference on Material Forming, ESAFORM 2011, Belfast (UK)

PY - 2011

Y1 - 2011

N2 - Extrusion applications require a strict control of the mechanical proprieties of the extrudates, in particular when undergoing severe loading conditions like in the transportation sector. Profile mechanical properties directly depend on its microstructure and texture, which are the result of multiple mechanisms based on precipitation mechanism or on grain shape evolution (grain refinement, recrystallizations, recovery and grain growth). In this direction, predicting the final profile microstructure under specific process parameters in the die design stage is of great relevance. The present study involved experimental activity on grain size measurements of profile and butt during interrupted direct extrusion of an AA6082 round profile. The grain size measurements were coupled with simulation results in order to regress analytical models based on effective strain, strain rate and temperature. Finally, the developed model was implemented in the numerical code by means of a subroutine that can be used as microstructure prediction tool.

AB - Extrusion applications require a strict control of the mechanical proprieties of the extrudates, in particular when undergoing severe loading conditions like in the transportation sector. Profile mechanical properties directly depend on its microstructure and texture, which are the result of multiple mechanisms based on precipitation mechanism or on grain shape evolution (grain refinement, recrystallizations, recovery and grain growth). In this direction, predicting the final profile microstructure under specific process parameters in the die design stage is of great relevance. The present study involved experimental activity on grain size measurements of profile and butt during interrupted direct extrusion of an AA6082 round profile. The grain size measurements were coupled with simulation results in order to regress analytical models based on effective strain, strain rate and temperature. Finally, the developed model was implemented in the numerical code by means of a subroutine that can be used as microstructure prediction tool.

KW - Engineering

KW - Aluminum

KW - Extrusion

KW - Microstructure Evolution

KW - Microstructure Prediction

UR - http://www.scopus.com/inward/record.url?scp=84882801360&partnerID=8YFLogxK

U2 - 10.1063/1.3589556

DO - 10.1063/1.3589556

M3 - Journal articles

AN - SCOPUS:84882801360

VL - 1353

SP - 449

EP - 454

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

ER -