Effect of Grain Boundary State on Diffusion and Diffusion-Controlled Processes in Ultrafine-Grained Materials Processed by Severe Plastic Deformation

Abstract:

Experimental studies on the grain boundary diffusion and processes controlled by it in the ultrafine-grained metallic materials produced by various methods of severe plastic deformation are reviewed. Correlation between the increased diffusion permeability of grain boundaries and features of recrystallization and deformation development in these materials possessing the non-equilibrium state of grain boundaries formed during severe plastic deformation in the temperature range of T < 0.35T_m is demonstrated and analyzed.

• Periodical: Diffusion Foundations (Volume 5)
• Pages: 111-126
• DOI: https://doi.org/10.4028/www.scientific.net/DF.5.111
• Online since: July 2015
• Authors: Evgeny V. Naydenkin*, Galina P. Grabovetskaya, I.P. Mishin
• Keywords: Creep, Diffusion, Grain Boundary, Recrystallization, Severe Plastic Deformation (SPD), Ultrafine-Grained Materials

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