Shock-induced phase transformation in tantalum

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چکیده

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Shock-induced phase transformation in tantalum.

A TEM study of pure tantalum and tantalum-tungsten alloys explosively shocked at a peak pressure of 30 GPa is presented. While no omega phase was found in shock-recovered pure Ta and Ta-5W which mainly contain a cellular dislocation structure, a shock-induced omega phase was found in Ta-10W which contains evenly distributed dislocations with a density higher than 1 × 10(12) cm( - 2). The shock-...

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Gray body temperatures and emittances of silica glass under shock compression between 10 and 30 GPa are determined. Observed radiative temperatures are higher than computed continuum temperatures for shockcompressed silica glass; however, below -26 GPa observed emittances are <0.02. This suggests that fused quartz deforms heterogeneously in this shock pressure range as has been observed in othe...

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ژورنال

عنوان ژورنال: Journal of Physics: Condensed Matter

سال: 2010

ISSN: 0953-8984,1361-648X

DOI: 10.1088/0953-8984/22/38/385702