Effect of inclusion arrangement structure on strength of dual ceramics composites
Ceramic composites based on a ZrB2 matrix with inclusions of SiC and MoSi2 particles are considered. The volume fraction of both types of inclusions, their size and location in space varied. To study the effect of the structure of composites on their compressive strength, a computer model of the unit cell of the corresponding composites was developed based on the method of movable cellular automata. As a result of modeling, the features of the mechanical behavior of composites ZrB2 - X(SiC) - Y(MoSi2) with different designs of the structural-phase hierarchy were revealed. It is shown that ceramics with a dual composite structure, where inclusions of MoSi2 form mesoscopic granules, have better mechanical characteristics due to the inhibition of microcrack propagation compared to a material with a uniform arrangement of both types of inclusions in the bulk of the composite.
Keywords
ceramic composite,
hierarchical structure,
strength,
crack growth retardation,
simulation,
movable cellular automaton methodAuthors
| Eremina G.M. | Institute of Strength Physics and Materials Science SB RAS | anikeeva@ispms.tsc.ru |
| Smolin A.Y. | Institute of Strength Physics and Materials Science SB RAS | asmolin@ispms.tsc.ru |
| Martyshina I.P. | Institute of Strength Physics and Materials Science SB RAS | mira@ispms.ru |
Всего: 3
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