Abstract
The microstructures of long rod [001] single-crystal penetrators of W grown by CVD and zone melt processing, and W-5% Ta grown by zone melt (ZM) processing, were examined before and after penetration into RHA steel targets, by optical metallography and transmission electron microscopy. The initial Vickers microhardness values for the CVD-W rods was 417 VHN in contrast to 485 VHN for the ZM-W and W-5% Ta rods as a consequence of an order of magnitude larger dislocation density. Both the CVD-W and ZM-W exhibited less dense head flow associated with adiabatic shear bands and dynamic recrystallization (DRX) than the ZM-W-5% Ta, but all penetrators exhibited erosion tube formation in the penetration channel. These tube and erosion debris particles exhibited dense, overlapping shear bands composed of DRX grains or areas with larger, equiaxed grains resulting from residual grain growth. These observations suggest that controlling the penetrator head flow by solute-induced DRX may control penetration.
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L. E. MURR, H. K. SHIH and C-S. NIOU, Mater. Charact. 33 (1994) 65.
L. E. MURR, Y. LI, R. D. FLORES, E. A. TRILLO and J. C. MC CLURE, Mater. Res. Innov. 2(3) (1998) 150.
S. A. QUINONES and L. E. MURR, Phys. Stat. Sol. (a) 166 (1998) 763.
S. PAPPU, S. SEN, L. E. MURR, D. KAPOOR and L. S. MAGNESS, Mater. Sci. Engng. A298 (2001) 144.
E. A. TRILLO, E. V. ESQUIVEL, L. E. MURR and L. S. MAGNESS, Mater. Character. 48 (2002) 407.
L. E. MURR, E. A. TRILLO, S. PAPPU and C. KENNEDY, J. Mater. Sci. 37 (2002) 3337.
L. E. MURR and E. V. ESQUIVEL, J. Mater. Sci. 39 (2004) 1153.
E. V. ESQUIVEL, L. E. MURR, E. A. TRILLO and D. A. MARTINEZ, Powder Met. 46(2) (2003) 137.
C. KENNEDY and L. E. MURR, Mater. Sci. Engng. A325 (2002) 131.
L. E. MURR, E. FERREYRA, S. PAPPU, E. P. GARCIA, J. C. SANCHEZ, W. HUANG, J. M. RIVAS, C. KENNEDY, A. AYALA and C-S. NIOU, Mater. Character. 37 (1996) 245.
L. S. MAGNESS, JR., Mech. Mater. 17 (1994) 147.
W. J. BRUCHEY, E. J. HORWATH and P. W. KINGMAN, in “Tungsten and Tungsten Alloys—Recent Advances,” edited by A. Crowson and E. Chen (TMS, Warrendale, PA, 1991) p. 121.
P. W. KINGMAN and R. A. HERRING, Ballistic penetration phenomenology of high symmetry single crystals. Report ARL-TR-700 (U.S. Army Research Laboratory, Aberdeen Proving Ground, MD, 1995).
W. LEONARD, L. S. MAGNESS, JR., R. W. DOWDING, J. TROGOLO, M. CHUNG and D. KAPOOR, in “Tungsten and Refractory Metals,” edited by A. Bose and R. Dowding (TMS, Warrendale, PA, 1995) p. 149.
F. I. GRACE, in “Metallurgical and Materials Applications of Shock-Wave and High-Strain-Rate Phenomena,” edited by L. E. Murr, K. P. Staudhammer and M. A. Meyers (Elsevier Science, B.V., Amsterdam, 1995) chap. 62, p. 521.
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Pizaña, C., Esquivel, E.V., Murr, L.E. et al. The role of dynamic recrystallization in [001] single-crystal W and W-Ta alloy ballistic rod penetration into steel targets. J Mater Sci 40, 4849–4857 (2005). https://doi.org/10.1007/s10853-005-2021-9
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DOI: https://doi.org/10.1007/s10853-005-2021-9