Recently, low-frequency internal friction measurements on a series of Fe-Cr alloys by KonstantinoviÄ and Terentyev [M.J. KonstantinoviÄ and D. Terentyev, Mater. Sci. Eng. A 521-522 (2009) p.106] have demonstrated that increasing Cr concentrations lead to an increase in the strength of the β-relaxation at the cost of the γ-relaxation (Chambersâ notation). In the same concentration and temperature regime, the alloys show alloy softening. It is argued that both phenomena are due to the same process, namely the influence of foreign atoms on the transformation of the cores of a 01 1 1/2 screw dislocations from their low-temperature configuration, capable of forming kink pairs on {1 1 0} planes, to their high-temperature configuration with kink-pair generation on {2 1 1} planes.View full textDownload full textKeywordsiron-chromium alloys, alloy softening, kink-pair generation, dislocation relaxation, screw dislocations, bcc metalsRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2010.493856
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