STATISTICAL ASPECTS OF MARTENSITIC NUCLEATION.

G. B. Olson*, K. Tsuzaki, Morris Cohen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

43 Scopus citations

Abstract

Analysis of the Cech-Turnbull small-particle martensitic transformation experiments in terms of heterogeneous nucleation theory defines an exponential nucleation-site potency distribution. Sensitive acoustic-emission detection of martensitic nucleation events shows that the same form of distribution describes the behavior of bulk polycrystals, and the influence of heat treatment on the distribution amplitude can be identified in this way. On the assumption of a random distribution of pre-existing nucleation-site orientations, the effect of applied stress on the effective potency distribution has been calculated, thus accounting for an observed nonlinear stress dependence of the transformation kinetics. The model also predicts a transformation 'yield locus' for multiaxial stress.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsG.Slade III Cargill, Frans Spaepen, King-Ning Tu
PublisherMaterials Research Soc
Pages129-148
Number of pages20
Volume57
ISBN (Print)0931837227
StatePublished - Dec 1 1987

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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