A systematic approach has been followed in the production and characterization of Pd foils to be used in excess heat production experiments [1][ 2] . Starting with a metal foil as supplied, palladium samples have been fabricated and characterized in a step by step process, and then subjected to electrolysis deuterium loading. The characterized metallurgical properties include the main grain siz...

The spatial separation of macroscopic rheological behaviors has led to independent conceptual treatments frictional failure, often referred as brittle, and viscous deformation. Detailed microstructural investigations naturally deformed carbonate rocks indicate that both failure mechanisms might operate during seismic deformation carbonates. Here, we investigate the were active in two fault zone...

Abstract Nanostructured tantalum (Ta)-based dental implants have recently attracted significant attention thanks to their superior biocompatibility and bioactivity as compared titanium-based counterparts. While the biological chemical aspects of Ta been widely studied, mechanical features investigated more rarely. Additionally, behavior these and, importantly, plastic deformation mechanisms are...

The main focus of the paper is an extension of the classical Taylor theory of plasticity to include the microscopic conditions for slip transfer at grain boundaries. It is demonstrated that such leads to consideration of the grain boundary character distribution function, in concert with the usual local state distribution function. The primary result is an expression for the generalized Taylor ...

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As foreseen by Richard Feynman in his famous talk titled There's Plenty of Room at the Bottom in 1959, scientists nowadays are miniaturizing structures in materials to achieve better performance as concerned in technical applications. Reducing grain sizes in polycrystalline materials into the range of less than 100nm, for example, could achieve extraordinary high strength in these so called nan...

We investigate shock response of single crystal and nanocrystalline pentaerythritol tetranitrate (PETN) with a coarse-grained model and molecular dynamics simulations, as regards mechanical hotspot formation in the absence or presence of grain boundaries (GBs). Single crystals with different orientations, and columnar nanocrystalline PETN with regular hexagonal, irregular hexagonal, and random ...