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Characteristic of dislocations in TiB2 particles associated with hypervelocity impact craters in 65vol.% TiB2/Al composite were investigated by transmission electron microscopy (TEM). Two kinds of dislocation networks in as-impacted TiB2 particles were identified. One is hexagonal dislocation networks including 1/3〈1¯ 2 1¯ 0〉, 〈0001〉, 1/3〈1¯ 2 1¯ 3〉 type dislocations on {0001}, {1 0 1¯ 0}, and {1...
Interfacial structure in 55%TiB 2 /Al composite before and after high speed impact was investigated in detail. It is found that there is no stacking fault in original TiB 2 particle before fabrication or in TiB 2 particle in composite. However, after the composite is impacted by 1.2mm projectile with the velocity of 2.5km/s, stacking fault forms along the (0001) plane around...
In this paper, TC4 m /5A06Al composite was hypervelocity impacted by 2024 aluminium projectile with the diameter of 2mm and with the impact velocity of 3.5km/s. The residual microstructure was observed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HREM). The TC4–Al interface before impact was composed of...
Residual microstructures associated with hypervelocity impact craters in 55vol.% TiB 2 /2024Al composite were investigated by transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). TiB 2 –Al interface, TiB 2 particles and Al matrix before and after hypervelocity impact were compared to discuss the effect of hypervelocity impact...
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