Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature

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Abstract

A stable {1 - 10 } <110> single component sharp texture was obtained during ambient temperature tube High-Pressure Shearing (t-HPS) of 99.999% purity aluminum. It is shown that the grain size and the grain aspect ratio saturate at ~ 8 μm and ~ 1.6, respectively, at an equivalent strain of ~ 30 and the high-angle grain boundary fraction continues to decrease after this saturation even to equivalent strains exceeding ~ 200. The {1 - 10 } <110> texture emerges at an equivalent strain of ~ 6 to 9 with the completion of recrystallization and develops gradually as a sole component sharp texture with increasing intensity upon further processing. This component is a stable orientation in t-HPS processing although it was not previously observed experimentally as a shear texture. Thus, t-HPS processing provides a new and effective experimental tool for simple shear testing that is distinctly different from earlier shear strain methods such as torsional processing.

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Li, Z., Li, L. Y., Zhu, Y. B., Lin, K., Ren, Z. T., Yang, Y., … Langdon, T. G. (2022). Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature. Scientific Reports, 12(1). https://doi.org/10.1038/s41598-022-21717-z

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