Abstract
Aluminum was found to strengthen textured polycrystalline α-Ti linearly with concentra-tion over the 78 to 810 K temperature range. Between 300 and 530 K about 90 pct of the strengthening effect is athermal and the athermal component, Δτa, follows Δτa = ϕμε′c over the 0 to 15 at. pct Al range where ϕ is a dimensionless constant near unity, μ. is the modulus, ε′ is the misfit parameter, andc is concentration. It is proposed that edge kinks in screw dislocations interact with solute atoms and give rise to the observed linear athermal strengthening. Above about 530 K, atmosphere and strain aging effects are associated with aluminum.
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Rosenberg, H.W., Nix, W.D. Solid solution strengthening in Ti-Al alloys. Metall Trans 4, 1333–1338 (1973). https://doi.org/10.1007/BF02644529
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DOI: https://doi.org/10.1007/BF02644529