The role of dynamic recrystallization in [001] single-crystal W and W-Ta alloy ballistic rod penetration into steel targets
作者： C. Pizaña , E. V. Esquivel , L. E. Murr , C. Y. Piña , M. T. Baquera
DOI: 10.1007/S10853-005-2021-9
关键词: Microstructure 、 Equiaxed crystals 、 Metallurgy 、 Tube formation 、 Penetration (firestop) 、 Dynamic recrystallization 、 Shear band 、 Grain growth 、 Materials science 、 Adiabatic shear band
摘要: The microstructures of long rod [001] single-crystal penetrators W grown by CVD and zone melt processing, W-5% Ta (ZM) were examined before after penetration into RHA steel targets, optical metallography transmission electron microscopy. initial Vickers microhardness values for the CVD-W rods was 417 VHN in contrast to 485 ZM-W as a consequence an order magnitude larger dislocation density. Both exhibited less dense head flow associated with adiabatic shear bands dynamic recrystallization (DRX) than ZM-W-5% Ta, but all erosion tube formation channel. These debris particles dense, overlapping composed DRX grains or areas larger, equiaxed resulting from residual grain growth. observations suggest that controlling penetrator solute-induced may control penetration.
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