Philosophical Magazine Letters · 2004 · 154 citations · 12 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsPhase TransformationsSolid State PhysicsAmorphous MaterialsAmorphous SolidsDeformation MechanismsDislocation MechanicsGrain Structure AnalysisMicrostructure EvolutionAmorphizationAmorphous DefectsAmorphous Solid FormationAmorphous-to-crystalline TransformationAmorphous-to-crystalline TransitionsDislocation Core StructureGrain BoundariesHigh-temperature Deformation Mechanisms
Abstract Using high-resolution electron microscopy, we investigated the initial stages of high-pressure-torsion-induced crystalline-to-amorphous transformation of TiNi. It is found that the deformation-induced amorphization initiated from dislocation core regions in the interior of grains and from grain boundaries. It is believed that both the energy stored in the dislocations and the energy stored in the grain boundaries contribute significantly to driving the crystalline-to-amorphous transformation. Acknowledgement This work is supported by the US Department of Energy IPP project.
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Deformation behavior and plastic instabilities of ultrafine-grained titanium
Di Jia, Y. M. Wang, K.T. Ramesh et al. · Applied Physics Letters · 2001 · 449 citations
Natural Sciences, Materials Engineering, Materials Science +17