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Abstract This work was undertaken to evaluate the applicability of the Ashby grain-boundary hardening model for a high strain range. To this end, Al–Mg alloy with distinctly different grain sizes… Click to show full abstract
Abstract This work was undertaken to evaluate the applicability of the Ashby grain-boundary hardening model for a high strain range. To this end, Al–Mg alloy with distinctly different grain sizes (˜100 μm vs ˜1 μm) was cold-rolled to a true strain of ˜1.6 and the resulting dislocation densities were compared by using transmission electron microscopy. A minor difference revealed by the measurements suggested a violation of the Ashby's model. This effect was attributed to a partial relaxation of strain constraints due to significant change of grain shape, development of texture and formation of pronounced substructure.
Journal Title: Transactions of Nonferrous Metals Society of China
Year Published: 2019
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