Localized Grain-Boundary Electronic States and Intergranular Fracture
- 5 January 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 58 (1), 61-64
- https://doi.org/10.1103/physrevlett.58.61
Abstract
The appearance of localized grain-boundary electronic states is shown to provide a reliable indication of intergranular fracture in polycrystalline materials. Representative densities of states are presented for some intermetallic compounds by use of polyhedral models of grain-boundary structure. The role of certain segregated impurities as inhibitors of intergranular brittleness is briefly discussed and suggestions are made for direct experimental verification of our model.
Keywords
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