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A cylindrical hexagonal-close-packed Ti sample was pre-deformed by dynamic compression to produce coarse-grained and ultrafine-grained structures in different parts of the sample followed by further dynamic compression to failure, making it possible to explore the effect of stored strain and grain boundary energy on shear banding in the material. A long shear band that formed during the final compression...
A 3-D model of freckle (solute channel) formation at a microstructural level was coupled with in situ X-ray radiography to investigate the mechanisms of freckle initiation and growth. The model predictions for solute partitioning, diffusion and convection were validated via in situ X-ray radiographic measurements in Ga–25wt.% In alloy, showing good agreement. Other key features, such as freckle channel...
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