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An analysis of the flow stress of a two-phase alloy system, Ti-6Al-4V

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Abstract

An analysis of the tensile deformation behavior of a two-phase body-centered cubic (bcc)-hexagonal close-packed (hcp) alloy, Ti-6Al-4V, has been made. This has shown that the temperature dependence of the flow stress, the logarithm of the effective stress, and the strain-rate sensitivities can be described by simple analytical equations if the thermally activated strain-rate equation contains the Yokobori activation enthalpyH=H o ln (σ*0/σ*), whereH o is a constant,σ* the effective stress, andσ*0 its 0 K value. The flow stress-temperature plateau region (500 to 600 K) also can be rationalized analytically in terms of oxygen dynamic strain aging in the alpha phase

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Authors and Affiliations

  1. the Department of Materials Science and Engineering, University of Florida, 32611, Gainesville, FL

    R. E. Reed-Hill (Professor Emeritus), C. V. Iswaran (Research Scientist) & M. J. Kaufman (Professor)

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  1. R. E. Reed-Hill
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  2. C. V. Iswaran
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  3. M. J. Kaufman
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Reed-Hill, R.E., Iswaran, C.V. & Kaufman, M.J. An analysis of the flow stress of a two-phase alloy system, Ti-6Al-4V. Metall Mater Trans A 27, 3957–3962 (1996). https://doi.org/10.1007/BF02595644

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