Failure mechanisms in metal–metal nanolaminates at elevated temperatures: Microcompression of Cu–W multilayers
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2021, Acta MaterialiaCitation Excerpt :As shown in Figs. 2-5, deviations from linear-elastic behavior and the yield point of the micropillars was determined by the formation of shear bands and highly localized plasticity at the top of the pillars. Shear banding has been reported in a wide variety of nanolayered materials [49,58-64], and it is generally appreciated that shear bands in layered microstructures are triggered by the breeching of interfaces. The shear bands in our micropillars with perpendicular CTBs were found to be non-crystallographic; they formed at angles in the range of 35-40° from the pillar surface and remained relatively constant across the entire shear band, suggesting that they are associated with the maximum resolved shear stress.
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