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The influence of strain rate dependent work hardening on the necking strain in α-titanium at elevated temperatures

  • Mechanical Behavior
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Abstract

Titanium has a “blue brittle” effect like that observed in steels. At the temperature of minimum ductility, the neck in the tensile specimen is very sharply defined. Above the blue brittle temperature, the tensile elongation of this metal undergoes a very significant increase that is due to the development of a diffuse neck. Diffuse necks are also observed in superplasticity. However, the conditions that cause the diffuse neck above the blue brittle temperature in titanium are different from those encountered in superplasticity. In superplasticity, the necking phenomenon is associated with a direct dependence of the flow stress on the strain rate, whereas in the present case it is primarily due to rate dependent work hardening associated with dynamic strain aging.

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Authors and Affiliations

  1. Department of Metallurgical and Materials Engincering, University of Florida, Gainesville, Fla.

    A. T. Santhanam (Graduate Student) & R. E. Reed-Hill (Professor)

Authors
  1. A. T. Santhanam
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  2. R. E. Reed-Hill
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Santhanam, A.T., Reed-Hill, R.E. The influence of strain rate dependent work hardening on the necking strain in α-titanium at elevated temperatures. Metall Trans 2, 2619–2622 (1971). https://doi.org/10.1007/BF02814903

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  • DOI: https://doi.org/10.1007/BF02814903

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