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Korznikov, A. V.
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Publications (3/3 displayed)
- 2002Influence of long-ordering parameter and boron microalloying on mechanical properties of nanocrystalline intermetallic compound Ni <inf>3</inf> Al
- 2002Effect of severe plastic deformation on the structure and mechanical properties of the 25Kh15K hard magnetic alloy
- 2001Mechanism of nanocrystalline structure formation in Ni<inf>3</inf>Al during severe plastic deformationcitations
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article
Mechanism of nanocrystalline structure formation in Ni<inf>3</inf>Al during severe plastic deformation
Abstract
<p>The microstructure evolution of the intermetallic compound Ni<sub>3</sub>Al during severe deformation by torsion under high quasi-hydrostatic pressure, which eventually results in the formation of a disordered nanocrystalline structure with a high level of internal stresses, was investigated as a function of the amount of shear strain. At the microstructural level, the crystals were first fragmented by the propagation of twins, then nanosized equiaxed crystallites with high misorientations were formed. At the macroscopic level, there is evidence that the cold-worked structure first formed at the sample surface and then propagated into the whole volume.</p>