The temperature dependence of the flow stress of the γ′ phase based upon Ni3Al

Abstract

The temperature dependence of the ordinary flow stress, the microplastic yield stress, and the transient creep responses ofγ′ have been studied with respect to the effect of alloying additions, slip line topography, and dislocation structure. The increase observed in the flow stress with increase in temperature may be attributed to a change in the mechanism controlling the flow stress. An exhaustion hardening process at low temperatures appears to be supplanted by a debris hardening process at high temperatures. This transition arises from an increased propensity for {100} slip as the temperature is raised. Solute additions affect the temperature dependence of the flow stress probably by altering the tendency for {100} slip.

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Correspondence to P. H. Thornton.

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Thornton, P.H., Davies, R.G. & Johnston, T.L. The temperature dependence of the flow stress of the γ′ phase based upon Ni3Al. MT 1, 207–218 (1970). https://doi.org/10.1007/BF02819263

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Keywords

  • Flow Stress
  • Creep Rate
  • Strain Rate Sensitivity
  • Metallurgical Transaction Volume
  • Critical Resolve Shear Stress