Features of bicrystal growth during the directional crystallization of metal melts
- Authors: Gubernatorov V.V.1, Sycheva T.S.1, Gundyrev V.M.1, Akshentsev Y.N.1
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Affiliations:
- M.N. Mikheev Institute of Metal Physics, Ural Branch
- Issue: Vol 62, No 2 (2017)
- Pages: 336-341
- Section: Crystal Growth
- URL: https://journals.rcsi.science/1063-7745/article/view/190927
- DOI: https://doi.org/10.1134/S1063774517020134
- ID: 190927
Cite item
Abstract
The factors responsible for the formation of different configurations of boundaries between adjacent crystallites during their growth from melt by Bridgman and Czochralski methods have been considered by an of example Fe–20 wt % Ga alloy and Ni bicrystals. It is found that the configuration of intercrystallite boundary is related to the features of crystallite growth, caused by the strained state of intercrystallite and interphase (crystal–melt) boundaries, the difference in the linear thermal expansion coefficients of the crystallite boundaries and bulk, and the shape (geometry) of the bicrystal cross section. It is suggested that the strained state of boundaries and the formation of substructure in crystallites during directional crystallization from metal melt are significantly affected by their deformation under the melt weight.
About the authors
V. V. Gubernatorov
M.N. Mikheev Institute of Metal Physics, Ural Branch
Email: sych@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
T. S. Sycheva
M.N. Mikheev Institute of Metal Physics, Ural Branch
Author for correspondence.
Email: sych@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
V. M. Gundyrev
M.N. Mikheev Institute of Metal Physics, Ural Branch
Email: sych@imp.uran.ru
Russian Federation, Yekaterinburg, 620137
Yu. N. Akshentsev
M.N. Mikheev Institute of Metal Physics, Ural Branch
Email: sych@imp.uran.ru
Russian Federation, Yekaterinburg, 620137