Disclinations, amorphization and microcrack generation at grain boundary junctions in polycrystalline solids
- 1 October 1994
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 70 (4) , 561-575
- https://doi.org/10.1080/01418619408242248
Abstract
Splitting of disclinations (decay of disclinations into small-power disclinations) at grain boundary junctions in polycrystalline solids is examined theoretically, and related to local amorphization. Energetic characteristics of the splitting process are revealed. It is shown that such a process competes effectively with microcrack generation at triple junctions of grain boundaries, causing a plastification of deformed polycrystalline materials.Keywords
This publication has 24 references indexed in Scilit:
- Intersection of dislocations with disclinations and flow stress in metallic glassesRadiation Effects and Defects in Solids, 1994
- Diffusion-induced decay of disclinations and solid state amorphization in mechanically alloyed materialsApplied Physics A, 1992
- Amorphization of the intermetallic compounds Co2Zr and Fe2Zr under mechanical grindingZeitschrift für Physik B Condensed Matter, 1992
- Crystal-to-glass transformation in metallic materialsMaterials Science and Engineering, 1988
- Formation and characterization of amorphous erbium-based alloys prepared by near-isothermal cold-rolling of elemental compositesJournal of Applied Physics, 1985
- Triple lines in polycrystalline aggregates as disclinationsPhilosophical Magazine A, 1984
- Liquids and Glasses in Spaces of Incommensurate CurvaturePhysical Review Letters, 1983
- Disclination-dislocation model of metallic glass structuresJournal of Applied Physics, 1979
- A tentative description of the crystallography of amorphous solidsJournal de Physique Lettres, 1979
- Microcrack nucleation and fracture in silver crystalsActa Metallurgica, 1975