Abstract
The temperature dependence of internal grain-boundary friction in coarse- and ultrafine-grained titanium is investigated. It is demonstrated that true grain-boundary slipping causes internal grain-boundary friction in ultrafine-grained titanium, as in coarse-grained metals. It is established that when going from the coarse-grained structure with perfect grain boundaries to ultrafine-grained structure with imperfect grain boundaries, the temperatures of the beginning and intense development of true grain-boundary slipping decrease together with the activation energy of this process. The diffusion mechanism of true grain-boundary slipping is justified for both structural states.
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Dudarev, E.F., Pochivalova, G.P., Kolobov, Y.R. et al. True Grain-Boundary Slipping in Coarse- and Ultrafine-Grained Titanium. Russian Physics Journal 47, 617–625 (2004). https://doi.org/10.1023/B:RUPJ.0000047843.36167.39
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DOI: https://doi.org/10.1023/B:RUPJ.0000047843.36167.39