Theoretical analysis of dislocation splittings in MoSi2

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Authors

PAIDAR Václav ČÁK Miroslav ŠOB Mojmír VÍTEK Václav

Year of publication 2010
Type Article in Proceedings
Conference 15TH INTERNATIONAL CONFERENCE ON THE STRENGTH OF MATERIALS (ICSMA-15)
MU Faculty or unit

Faculty of Science

Citation
Web https://iopscience.iop.org/article/10.1088/1742-6596/240/1/012007
Doi http://dx.doi.org/10.1088/1742-6596/240/1/012007
Field Solid matter physics and magnetism
Keywords dislocation splitting; MoSi2
Description Due to a lower symmetry of the tetragonal C11b structure when compared with the cubic BCC lattice, the 1/2[331] dislocation cores are split asymmetrically contrary to the 1/2[111]; BCC dislocations. This has essential impact on their behaviour and, consequently, on mechanical properties. Various types of dislocation dissociations are analyzed in the frame of anisotropic elasticity with the help of the data from ab initio calculations of gamma-surfaces for generalized stacking faults in intermetallic compound MoSi2.
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