Energy of planar defects in the Ni3Al phase: Theory and experiment |
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Authors: | E. V. Kozlov E. L. Nikonenko N. A. Koneva |
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Affiliation: | (1) Tomsk State University of Architecture and Building, Solyanaya pl. 2, Tomsk, 634003, Russia |
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Abstract: | The Ni3Al phase with an L12 surperstructure exhibits a clearly pronounced positive temperature dependence of the yield stress. The nature of this phenomenon is still not clearly understood. The temperature dependence of the yield stress under consideration is determined, in many respects, by the structure of glide superdislocations and planar defects of these superdislocations involved in the L12 superstructure. A critical analysis is made of the current state of the art in the solution of the problem regarding the energy of antiphase boundaries in planes of an octahedron and a cube, as well as the energy of stacking faults in the Ni3Al phase. |
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