Physical based microstructure modelling coupled with nucleation theory during and after hot forming of AA5083

被引：0
|
作者：
Sherstnev, P. [1 ]
Sommitsch, C. [1 ,2 ]
Mitsche, S. [3 ]
Melzer, C. [4 ]
机构：
[1] Univ Min & Met Leoben, Christian Doppler Lab Mat Modelling & Simulat, Franz Josef Str 18, A-8700 Leoben, Austria
[2] Graz Techol Univ, Inst Mat Sci & Welding, A-8010 Graz, Austria
[3] Graz Techol Univ, Inst Electron Microscopy, A-8010 Graz, Austria
[4] AMAG Rolling GmbH, A-5282 Ranshofen, Austria
来源：
THERMEC 2009 SUPPLEMENT: 6TH INTERNATIONAL CONFERENCE ON PROCESSING & MANUFACTURING OF ADVANCED MATERIALS | 2010年 / 89-91卷
关键词：
aluminium; microstructure modelling; FEM; FORGE; dislocation; nucleation; hot forming; RECRYSTALLIZATION; ALLOYS; DEFORMATION; ALUMINUM; KINETICS;
D O I：
10.4028/www.scientific.net/AMR.89-91.509
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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).
引用
收藏
页码：509 / +
页数：7
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