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High-temperature deformation was investigated in a Ta–2.5wt% W commercially available tantalum alloy, at temperatures in the range of 1523–1723K and at a stress range extending from 35MPa to 210MPa. The experimental data, which cover several orders of magnitude of strain rate, show that the stress dependence of creep rate is high and that the temperature dependence of creep rate is higher than that...
A micromechanics study is carried out for the high strain rate deformation of ceramic particle reinforced metal matrix composites. The ceramic particles are taken to be elastic, equal-sized, spherical and uniformly distributed in the matrix. The stress-strain behavior of the matrix material is assumed to be elastic-perfectly plastic or power-law strain hardening of the Ramberg-Osgood type, coupled...
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