Lateral stress evolution in Chromium Sulfide

Petel, Oren E.; Appleby-Thomas, Gareth; Hameed, Amer; Capozzi, Alexander; Goroshin, Samuel; Frost, David L.; Hazell, Paul J.

doi:10.1088/1742-6596/500/18/182031

Cited by 1 publication

(1 citation statement)

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“…The quasi-static material properties have been investigated by Nabavi et al [36] and the planar shock response has been investigated by Petel et al [37], however the high-strain rate response of the material has not been extensively studied to date. On the basis of the low-strain rate properties reported by Nabavi and summarized in Table 1, and the low dynamic shear strength of &1 GPa reported by Petel [37], Cr/CrS cermets are not an ideal candidate material for high-performance armor inserts as they possess higher density, much lower hardness, and broadly similar toughness compared to traditional ceramic armor materials. However, the Cr/CrS cermet is an ideal model material to examine the influence of microstructure and functional grading on ballistic response due to the simplicity of synthesizing the material using modest laboratory facilities as well as its amenability to substantial microstructural modification via straightforward variation in reactant mass fractions.…”

Section: Introductionmentioning

confidence: 99%

Ballistic Response of Chromium/Chromium-Sulfide Cermets

Loiseau

Nabavi

Capozzi

et al. 2015

J. dynamic behavior mater.

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In the present study, the ballistic response of chromium/chromium-sulfide cermet, a microstructural ceramic-metal composite, was investigated. The chromium/chromium-sulfide cermet was manufactured using self-propagating high-temperature synthesis, a process wherein the material is created under a self-sustaining combustion reaction between the chromium and sulfur. This type of synthesis allows the creation of near-net shape structures and offers the possibility of tuning material properties and material behavior by changing the reactant composition. High-speed ballistic impact (&1460 m/s) of samples with initial molar ratios of Cr:S ranging from 1.15:1 to 4:1 exhibited a transition in response from purely brittle to quasi-ductile when the molar ratio was at and above 3:1. Microscopy of the impacted samples revealed that this ductility was sustained by significant deformation of metal chromium particles supported in the matrix of chromium-sulfide ceramic. Ballistic depth of penetration experiments at &1715 m/s using thin cermet samples facing a polyethylene cylinder showed a weak dependence of residual penetration on molar ratio.

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Section: Introductionmentioning

confidence: 99%