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Correlation of tensile properties, deformation modes, and phase stability in commercial β-phase titanium alloys

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Abstract

The effect of plastic deformation mode on tensile properties of quenched commercial β-phase titanium alloys has been investigated at approximately constant grain size and oxygen content. In addition, stability of β-phase has been estimated from ω-reflections or diffuse streaking in electron diffraction patterns in a manner similar to the previous works on binary β-phase titanium alloys. Dominant mode of plastic deformation is {332}<113> twinning in the alloys with large instability of β-phase, such as Ti-11.5Mo-6Zr-4. 5Sn and Ti-15Mo-5Zr, and is crystallographic slip in the alloys with small instability of β-phase, such as Ti-15Mo-5Zr-3Al, Ti-3Al-8V-6Cr-4Mo-4Zr, Ti-15V-3Cr-3Al-3Sn, Ti-8Mo-8V-2Fe-3Al, and Ti-13V-11C-3Al. Twinning leads to low yield strength and large elongation, while slip results in high yield strength and small elongation in agreement with binary and termary β-phase titanium alloys.

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Authors and Affiliations

  1. The Research Institute for Iron, Steel and Other Metals, Tohoku University, 980, Sendai, Japan

    S. Hanada (Instructor) & O. Izumi (Professor)

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  1. S. Hanada
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  2. O. Izumi
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Hanada, S., Izumi, O. Correlation of tensile properties, deformation modes, and phase stability in commercial β-phase titanium alloys. Metall Trans A 18, 265–271 (1987). https://doi.org/10.1007/BF02825707

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