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Dynamic Recovery as a Strengthening Mechanism

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Abstract:

Recovery usually softens strain hardened coarse grained metallic materials but it can increase the strength of ultrafine grained materials. The present work shows evidence that dynamic recovery can produce strain-hardening behavior in ultrafine grained aluminum processed by high pressure torsion. Mechanical testing reveals an increase in flow stress during low strain rate tensile tests and a decrease in strain rate during creep tests. No significant change is observed in the grain size. It is shown that this effect can be used to increase the uniform elongation of these materials.

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Periodical:

Solid State Phenomena (Volume 383)

Pages:

103-108

DOI:

https://doi.org/10.4028/p-Ol4wpX

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Online since:

January 2026

Authors:

Amanda Pereira Carvalho, Roberto Figueiredo*

Keywords:

Deformation Mechanism, Dynamic Recovery, Ultrafine Grained Materials, Uniform Elongation

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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