Thermodynamic dislocation theory: Bauschinger effect

Abstract

The thermodynamic dislocation theory developed for non-uniform plastic deformations is used here to simulate the stress-strain curves for crystals subjected to anti-plane shear-controlled load reversal. We show that the presence of the positive back stress during the load reversal reduces the magnitude of shear stress required to pull excess dislocations back to the center of the specimen. There, the excess dislocations of opposite signs meet and annihilate each other leading to the Bauschinger effect.

arXiv comment7 pages, 9 figures. arXiv admin note: text overlap with arXiv:1701.08336 by other authors

References in corpus (5)

• Shear-transformation-zone theory of plastic deformation near the glass transition
• Statistical Thermodynamics of Strain Hardening in Polycrystalline Solids
• Thermodynamic dislocation theory of high-temperature deformation in aluminum and steel
• Thermal Effects in Dislocation Theory
• Yielding Transitions and Grain-Size Effects in Dislocation Theory

Cited by in corpus (5)

• Thermodynamic theory of dislocation/grain boundary interaction
• Thermodynamic dislocation theory: torsion of bars
• Plane constrained shear of single crystals
• Dislocation impediment by the grain boundaries in polycrystals
• Thermodynamic dislocation theory: Size effect in torsion