Orientation Relationships and Lattice Misfit between a Nb Matrix and γ-Silicide in a Nb–Si Composite
- Authors: Zavodov A.V.1, Zaytsev D.V.1, Kuzmina N.A.1, Svetlov I.L.1
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Affiliations:
- All-Russian Scientific Research Institute of Aviation Materials
- Issue: Vol 64, No 5 (2019)
- Pages: 724-730
- Section: Real Structure of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/194180
- DOI: https://doi.org/10.1134/S1063774519050250
- ID: 194180
Cite item
Abstract
Orientation relationships {110}Nb||{100}γ and 〈111〉Nb||〈001〉γ between the crystal lattices of the Nb solid solution and particles of γ-silicide Nb5Si3 were determined by transmission electron microscopy. The following two types of matching planes were found: {110}Nb||{100}γ and {111}Nb||{001}γ. The former planes form steps at an angle of 120°. The correctness of the calculated orientation relationships was confirmed and these relationships were compared with experimental electron diffraction patterns using methods of mathematical modeling, which enable one to obtain superimposed electron diffraction patterns of several phases and tilt the model crystal. An interface model in two sections was constructed. The morphology of the interface between the particle and the matrix was explained in terms of structural features. The lattice misfit between the matrix and γ-silicide was calculated.
About the authors
A. V. Zavodov
All-Russian Scientific Research Institute of Aviation Materials
Author for correspondence.
Email: zavodovad@gmail.com
Russian Federation, Moscow, 105005
D. V. Zaytsev
All-Russian Scientific Research Institute of Aviation Materials
Email: zavodovad@gmail.com
Russian Federation, Moscow, 105005
N. A. Kuzmina
All-Russian Scientific Research Institute of Aviation Materials
Email: zavodovad@gmail.com
Russian Federation, Moscow, 105005
I. L. Svetlov
All-Russian Scientific Research Institute of Aviation Materials
Email: zavodovad@gmail.com
Russian Federation, Moscow, 105005