Effect of the Quenching Temperature on the Phase Composition and Youngʹs Modulus of Corrosion-Resistant and Biocompatible Titanium Alloys

Abstract:

The relationship between the phase composition and the Young’s modulus in quenched PT-7M, Ti-6Al-7Nb, BT16 titanium alloys has been studied using the structural analysis, thermodynamic calculations in the Thermo-Calc software and micro-indentation. It is found that the nature of the change in the Young’s modulus in the investigated titanium alloys after quenching from the two-phase α+β-region depends on the chemical composition of the alloy, which determines the nature of the observed metastable phases (α', α", ω, β). The correlation between the extreme change in the Young’s modulus from the quenching temperature and the so-called interatomic bonding force (F_b) calculated from the electronic structure parameters of the α, α', β phases was shown for the Ti-6Al-7Nb alloy. The relationship between the limits of the Young’s modulus of the investigated alloys during quenching with the level of their alloying with α-and β-stabilizers is shown.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.309
• Online since: February 2019
• Authors: Anatoliy G. Illarionov*, Stella V. Grib, A.V. Huppeev
• Keywords: Biocompatible Titanium Alloys, Phase, Quenching, Young’s Modulus

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