Creep Fracture of Copper Tricrystal along Grain Boundaries

Fuel movement along grain boundaries in ice

Knowledge about movement of hydrocarbon-based fuels in ice is relevant to marine and terrestrial fuel spills in polar regions, and to the dispersion of hydrocarbon-based drilling fluids used to maintain lithostatic pressure in deep ice coring projects. The latter is of concern from both environmental and sample integrity aspects, particularly for projects that plan to sample deep subglacial env...

A unified approach to motion of grain boundaries, relative tangential translation along grain boundaries, and grain rotation

We postulate that almost any motion of an interface between two crystals can produce a coupled tangential motion of the two crystals relative to each other which is proportional to the normal motion of the interface. Such translations can produce grain rotations; the special case of the rotations of shrinking included circular cylindrical grains which increase misorientation, as seen in the mol...

Current transport along grain boundaries in d-wave superconductors

The use of a classic phase retrieval algorithm has been previously used to determine the local critical current Jc(x) along the length of grain boundary Josephson junctions that can be characterized using a standard s-wave model. The phase retrieval approach has been modified for use with d-wave dominated superconductors to allow for negative local currents along the boundary. In general soluti...

Grain Boundaries of M23c6 Particles in High Chromium Creep Resistant Steels, Stability and Effect on Creep Rate

D. A. Skobir Balantič, B. Žužek, F. Vodopivec, Institute of Metals and Technology, Ljubljana, Slovenia Specimens of high chromium creep resistant steel were tempered at 800 °C for different times and examined in SEM. After short tempering stringers of cementite particles are formed at ferrite grain boundaries. By longer tempering, the content of chromium and molybdenum increase up to Cr18Fe3Mo2...

Direct observation of copper depletion and potential changes at copper indium gallium diselenide grain boundaries