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arXiv · 1010.4644

On the origin of extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation

Ruslan Valiev·Nariman Enikeev·Maxim Murashkin·V. Kazykhanov·Xavier Sauvage
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Abstract

Ultrafine-grained Al alloys produced by high pressure torsion are found to exhibit a very high strength, considerably exceeding the Hall-Petch predictions for the ultrafine grains. The phenomena can be attributed to the unique combination of ultrafine structure and deformation-induced segregations of solute elements along grain boundaries, which may affect the emission and mobility of intragranular dislocations.

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Ruslan Valiev, Nariman Enikeev, Maxim Murashkin, V. Kazykhanov, Xavier Sauvage. 2010-10-22. On the origin of extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation. https://doi.org/10.1016/j.scriptamat.2010.07.014

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