Physical Based Microstructure Modelling Coupled with Nucleation Theory during and after Hot Forming of AA5083

Pavel Sherstnev; Christof Sommitsch; Stefan Mitsche; Carsten Melzer

doi:10.4028/www.scientific.net/AMR.89-91.509

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 89-91Physical Based Microstructure Modelling Coupled...

Physical Based Microstructure Modelling Coupled with Nucleation Theory during and after Hot Forming of AA5083

Abstract:

A physical model based on three types of dislocations and three nucleation sites for recrystallized grain is applied to hot rolling simulation. This model was implemented into a commercial Finite Element (FE) analysis package FORGE 2008 to calculate both the structure evolution during and the recrystallized volume fraction after hot working of aluminium alloy 5083. It is shown that the main nucleation mechanisms in the aluminium alloy are the particle stimulated nucleation (PSN) and nucleation at grain boundaries. Hence the precipitation kinetics during homogenisation was investigated by use of the thermodynamic calculation software MatCalc. To validate the simulation results hot rolling experiments were performed by means of a laboratory mill. The grain structure evolution was analysed by electron backscatter diffraction (EBSD).

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Periodical:

Advanced Materials Research (Volumes 89-91)

Pages:

509-514

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.89-91.509

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Online since:

January 2010

Authors:

Pavel Sherstnev, Christof Sommitsch, Stefan Mitsche, Carsten Melzer

Keywords:

Aluminum (Al), Dislocation, Finite Element Model (FEM), FORGE, Hot-Forming, Microstructure Modeling, Nucleation

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