Modeling of grain subdivision during severe plastic deformation by VPSC method combined with disclination analysis

被引：1
作者：
Nazarov, AA
Enikeev, NA [1 ]
Romanov, AE
Orlova, TS
Alexandrov, IV
Beyerlein, IJ
机构：
[1] Ufa State Aviat Tech, Ufa 450000, Russia
[2] Russian Acad Sci, Inst Metals Superplast Prob, Ufa 450001, Russia
[3] Russian Acad Sci, Ioffe Phys Tech Inst, Politekhnicheskaya 26, St Petersburg 194021, Russia
[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
NANOSTRUCTURED MATERIALS BY HIGH-PRESSURE SEVERE PLASTIC DEFORMATION | 2006年 / 212卷
关键词：
D O I：
10.1007/1-4020-3923-9_8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Microstructure development during severe plastic deformation by simple shear is modeled using a combination of the visco-plastic self consistent (VPSC) method and a disclination model. Strain incompatibilities between a homogeneous effective medium and a grain are calculated by VPSC. These are assumed to result in an accumulation of disclinations in the junctions of a grain that are relaxed by a growth of low-angle dislocation boundaries from the junctions. Predicted misorientation distributions between subgrains and their parent grains agree semi-quantitatively with experimental misorientation distributions for geometrically necessary boundaries. The texture after 100% simple shear was found to be insensitive to the presence of subgrains with misorientations less than 15 degrees.
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页码：61 / +
页数：2
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