We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Mechanisms of plastic deformation in microcrystalline and nanocrystalline TiNi-based alloys.
- Authors
Surikova, N.; Klopotov, A.; Korznikova, E.
- Abstract
Mechanisms of plastic deformation of a high-temperature B2 phase that act upon tension, compression, and high-pressure torsion in TiNi-based single crystals have been studied depending on the crystal orientation. For the crystals with orientations located near the [ $$ \bar 1 $$11] and [ $$ \bar 1 $$12] poles in the standard stereographic triangle, multiple dislocation slip prevails upon both compression and tension. In 'hard' crystals with the deformation axis close to the [001] direction, in which the Schmid factors for dislocation slip are close to zero, the main deformation mechanisms are the mechanical twinning in the B2 phase and the stress-assisted B2 → B19′ martensitic transformation. All the above listed mechanisms take part in the formation of the {111}〈 hkl〉 texture. The mechanism of the change in the orientation of 'hard' polycrystalline grains upon the formation of a nanocrystalline and amorphous-crystalline state has been demonstrated on the example of the evolution of the structure of [001] crystals upon severe plastic deformation in a Bridgman cell.
- Publication
Physics of Metals & Metallography, 2010, Vol 110, Issue 3, p269
- ISSN
0031-918X
- Publication type
Article
- DOI
10.1134/S0031918X10090103