Laser shock-induced spalling and fragmentation in vanadium

Jarmakani, H.; Maddox, Brian; Wei, C.T.; Kalantar, D. H.; Meyers, Marc A.

doi:10.1016/j.actamat.2010.04.027

Cited by 63 publications

(21 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This recrystallization is probably related to the microstructure formation reported in Mo under HP laser heating at temperatures below its melting curve [9]. The phenomenon is very rapid and would produce movements that the laser speckle method would signify as melting [1], and consequently lead to an underestimation of the melting T. This observation 9 is consistent with the spalling and fragmentation induced in laser-shocked V, causing damage to the surface that resembled melting [42].…”

Section: Resultssupporting

confidence: 64%

Melting curve and phase diagram of vanadium under high-pressure and high-temperature conditions

et al. 2019

View full text Add to dashboard Cite

We report a combined experimental and theoretical study of the melting curve and the structural behavior of vanadium under extreme pressure and temperature. We performed powder x-ray diffraction experiments up to 120 GPa and 4000 K, determining the phase boundary of the bcc-to-rhombohedral transition and melting temperatures at different pressures. Melting temperatures have also been established from the observation of temperature plateaus during laser heating, and the results from the density-functional theory calculations. Results obtained from our experiments and calculations are fully consistent and lead to an accurate determination of the melting curve of vanadium. These results are discussed in comparison with previous studies. The melting temperatures determined in this study are higher than those previously obtained using the speckle method, but also considerably lower than those obtained from shock-wave experiments and linear muffin-tin orbital calculations. Finally, a high-pressure high-temperature equation of state up to 120 GPa and 2800 K has also been determined.

show abstract

Section: Resultssupporting

confidence: 64%

Melting curve and phase diagram of vanadium under high-pressure and high-temperature conditions

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Experimental data for large single and nanocrystalline samples (and thus lower strain rate) are absent from the literature. References as follows: Cuq-Lelandias et al [24,67,68]; Abrosimov et al [46]; Ashitkov et al [25]; Zhao et al [66] citing unpublished results from C. Wehrenberg; Razorenov et al [23]; T. Remington's thesis [69]; Q. An et al [70]; Gray et al [37];…”

Section: Discussionmentioning

confidence: 99%

Spall strength dependence on grain size and strain rate in tantalum

et al. 2018

Self Cite

View full text Add to dashboard Cite

We examine the effect of grain size on the dynamic failure tantalum during laser-shock compression and release and identify a significant effect of grain size on spall strength,which is opposite the prediction of the Hall-Petch relationship: monocrystals have a higher spall strength than polycrystals, which, in turn, are stronger in tension than ultrafine grain sized specimens. Post-shock characterization reveals ductile failure which evolves by void nucleation, growth, and coalescence. Whereas in the monocrystal the voids grow in the interior, nucleation is both intra and intergranular in the poly and UFG crystals. The fact that spall is primarily intergranular in both poly and nanocrystalline samples is strong evidence for higher growth rates of intergranular voids, which have a distinctly oblate spheroid shape in contrast with intragranular voids, which are more spherical. Consistent with prior literature and theory we also identify an increase with spall strength with strain rate from 6x10 6 to 5x10 7 s-1. Molecular dynamics calculations agree with the experimental results and also predict grain-boundary separation in the spalling of polycrystals as well as an increase in spall strength with strain rate. An analytical model based on the kinetics of nucleation and growth of intra and intergranular voids and extending the

show abstract

“…How ever, systematic experimental investigations of high rate deformation and fracture of vanadium have not been performed until quite recently [5,6]. In the present work, we have studied vanadium of VnM 1 grade.…”

mentioning

confidence: 96%

Peculiarities of the elastic-plastic transition and failure in polycrystalline vanadium under shock-wave loading conditions

et al. 2015

View full text Add to dashboard Cite

Specific features in the deformation of polycrystalline vanadium under shock wave loading con ditions have been studied by experimental and theoretical methods. Analysis of the full wave profiles was used to determine the dynamic elastic limit and spall fracture stress in a range of stain rates of 10 5 -10 7 s -1 . The laws of elastic-plastic transition at the shock wave front, mechanisms of elastic precursor relaxation, and spall fracture development are discussed.

show abstract

Laser shock-induced spalling and fragmentation in vanadium

Cited by 63 publications

References 59 publications

Melting curve and phase diagram of vanadium under high-pressure and high-temperature conditions

Melting curve and phase diagram of vanadium under high-pressure and high-temperature conditions

Spall strength dependence on grain size and strain rate in tantalum

Peculiarities of the elastic-plastic transition and failure in polycrystalline vanadium under shock-wave loading conditions

Contact Info

Product

Resources

About