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.

引用

页码：61 / +

页数：2

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