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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/50788
Record Status
Checked
Record Id
50788
Title
Investigation of deformation mechanisms involved in the plasticity of AZ31 Mg alloy: In situ neutron diffraction and EPSC modelling
Contributors
O Muranskya (ANSTO)
,
DG Carr (ANSTO)
,
MR Barnett (Deakin U.)
,
EC Oliver (STFC Rutherford Appleton Lab.)
,
P Sittner (Institute of Physics v.v.i.)
Abstract
In situ neutron diffraction and Elasto-Plastic Self-Consistent (EPSC) polycrystal modelling have been employed to investigate which deformation mechanisms are involved in the plasticity of extruded AZ31 Mg alloy during the tensile loading along the extrusion direction. On the basis of this study we were able to determine the relative activity of the slip and twinning deformation modes. By tuning the parameters of the EPSC model (i.e. the critical resolved shear strengths and hardening parameters), excellent agreement with the experimental data has been achieved. It is shown that the strain in the crystallographic c direction is accommodated mainly by c + a dislocation slip on second-order pyramidal planes. The results further indicate that either slip of a dislocations occurs on {10.1} pyramidal planes or cross-slip from basal and prismatic planes takes place.
Organisation
ISIS
,
ISIS-ENGIN-X
,
STFC
Keywords
SSTD 2008-2009
,
Magnesium
,
EPSC modelling
,
Deformation mechanisms
,
Neutron diffraction
,
Plasticity
,
Engineering
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
Mater Sci Eng A
496, no. 1-2 (2008): 14-24.
doi:10.1016/j.msea.2008.07.031
2008
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