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The Portevin-le Chatelier Effect

  • James F. Bell
Part of the Springer Tracts in Natural Philosophy book series (STPHI, volume 14)

Abstract

At sufficiently low average strain rates in dead-weight quasi-static uniaxial stress experiments instabilities appear in the form of a series of successive steps superimposed upon the basic parabola of the large deformation. The first serious study of this phenomenon, in 1923, was that by Portevin and le Chatelier, after whom the phenomenon is now named. An example of this Portevin-le Chatelier effect may be seen in Fig. 7.1 in the present writer’s experiment 1219 for a 99.16% aluminum polycrystal. This experiment, shown in a σ2 vs ε plot in Fig. 3.3, is a dead-weight uniaxial tension measurement at a constant stress rate of 4.5 psi sec−1.

Keywords

Mode Index Transition Strain Hollow Tube Average Strain Rate Polycrystalline Aluminum 
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Copyright information

© Springer-Verlag Berlin · Heidelberg 1968

Authors and Affiliations

  • James F. Bell
    • 1
  1. 1.The Johns Hopkins UniversityBaltimoreUSA

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