On the origin of the extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation
作者： R.Z. Valiev , N.A. Enikeev , M.Yu. Murashkin , V.U. Kazykhanov , X. Sauvage
DOI: 10.1016/J.SCRIPTAMAT.2010.07.014
关键词:
摘要: Ultrafine-grained Al alloys produced by high-pressure torsion are found to exhibit a very high strength, considerably exceeding the Hall–Petch predictions for ultrafine grains. This phenomenon can be attributed unique combination of structure and deformation-induced segregations solute elements along grain boundaries, which may affect emission mobility intragranular dislocations.
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