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

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.

References in corpus (1)

• Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation

Cited by in corpus (2)

• Grain boundaries in ultrafine grained materials processed by severe plastic deformation and related phenomena
• Grain boundary segregation in UFG alloys processed by severe plastic deformation