Abstract
The Zn-22 % Al eutectoid alloy and the Pb-62 % Sn eutectic alloy were processed by high-pressure torsion (HPT) over a range of experimental conditions. Both alloys exhibit similar characteristics with significant grain refinement after processing by HPT but with a reduction in the hardness values by comparison with the initial unprocessed conditions. It is shown that there are generally smaller grains at the edges of the disks by comparison with the disk centers. The hardness results in these two alloys are mutually consistent, but they are different from those generally reported for conventional single-phase materials. The significance of this difference is examined.
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Acknowledgements
One of the authors is grateful for a scholarship from the China Scholarship Council (NXZ). This work was supported in part by the National Science Foundation of the United States under Grant No. DMR-1160966 and in part by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS.
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Zhang, N.X., Kawasaki, M., Huang, Y. et al. Microstructural evolution in two-phase alloys processed by high-pressure torsion. J Mater Sci 48, 4582–4591 (2013). https://doi.org/10.1007/s10853-012-7087-6
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DOI: https://doi.org/10.1007/s10853-012-7087-6