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Title: Mesoscale Modeling and Validation of Texture Evolution during Asymmetric Rooling and Static Recrystallization of Magnesium Alloy AZ31B

Journal Article · · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
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  1. ORNL
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The focus of the present research is to develop an integrated deformation and recrystallization model for magnesium alloys at the microstructural length scale. It is known that in magnesium alloys nucleation of recrystallized grains occurs at various microstructural inhomogeneities such as twins and localized deformation bands. However, there is a need to develop models that can predict the evolution of the grain structure and texture developed during recrystallization and grain growth, especially when the deformation process follows a complicated deformation path such as in asymmetric rolling. The deformation model is based on a crystal plasticity approach implemented at the length scale of the microstructure that includes deformation mechanisms based on dislocation slip and twinning. The recrystallization simulation is based on a Monte Carlo technique that operates on the output of the deformation simulations. The nucleation criterion during recrystallization is based on the local stored energy and the Monte Carlo technique is used to simulate the growth of the nuclei due to local stored energy differences and curvature. The model predictions are compared with experimental data obtained through electron backscatter analysis and neutron diffraction.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Center for Computational Sciences (NCCS)
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program
DOE Contract Number:
DE-AC05-00OR22725
OSTI ID:
1049775
Journal Information:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Vol. 43A, Issue 5; ISSN 1073-5623
Country of Publication:
United States
Language:
English

References (21)

Effect of Texture on the Mechanical Properties and Formability of Magnesium Wrought Materials [マグネシウム合金展伸材の機械的性質と成形性に及ぼす集合組織の影響] journal January 2000
The origin of “rare earth” texture development in extruded Mg-based alloys and its effect on tensile ductility journal November 2008
Alleviation of basal texture in twin-roll cast Mg–3Al–1Zn alloy journal June 2010
Microstructure and mechanical properties of Mg–Al–Zn alloy sheets severely deformed by asymmetrical rolling journal February 2007
Microstructure evolution in magnesium alloy AZ31 during cyclic extrusion compression journal August 2008
Enhancement of ductility in Mg–3Al–1Zn alloy with tilted basal texture by electropulsing journal December 2009
A model for texture development dominated by deformation twinning: Application to zirconium alloys journal November 1991
Modeling the strain hardening response of low SFE FCC alloys journal December 1998
A probabilistic twin nucleation model for HCP polycrystalline metals journal March 2010
Finite element simulations of cold deformation at the mesoscale journal September 1998
Modeling the effect of microstructural features on the nucleation of creep cavities journal October 2008
Modeling the kinetics and microstructural evolution during static recrystallization—Monte Carlo simulation of recrystallization journal July 1998
Monte Carlo simulation of deformation substructure evolution during recrystallization∗∗The submitted manuscript has been authored by a contractor of the U.S. Government under contract No. DE-AC05-96OR22464. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. journal November 1998
Simulations of deformation and recrystallization of single crystals of aluminium containing hard particles journal August 2000
Coupled simulations of texture evolution during deformation and recrystallization of fcc and bcc metals journal October 2008
Texture predictions using a polycrystal plasticity model incorporating neighbor interactions journal January 1996
Simulation of stress concentration in Mg alloys using the crystal plasticity finite element method journal January 2010
VULCAN—The engineering diffractometer at the SNS journal November 2006
First Results from the VULCAN Diffractometer at the SNS journal May 2010
Pulsed Neutron Scattering for the 21st Century journal May 2006
Texture of AZ31 Magnesium Alloy Sheet Heavily Rolled by High Speed Warm Rolling journal March 2007

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Related Subjects

36 MATERIALS SCIENCE
DEFORMATION
DISLOCATIONS
ELECTRONS
GRAIN GROWTH
MAGNESIUM ALLOY-AZ31B
MAGNESIUM ALLOYS
MICROSTRUCTURE
NEUTRON DIFFRACTION
NUCLEATION
NUCLEI
PLASTICITY
RECRYSTALLIZATION
ROLLING
SIMULATION
SLIP
STORED ENERGY
TEXTURE
TWINNING
VALIDATION
neutron diffraction
texture
recrystallization
magnesium