English Explanatory Dictionary

Hall-Petch equation

English dictionary entry

Meanings

name
  1. A relationship between the yield point and grain size of a material given by the equation σ_y = σ₀ + k_y * d^(-0.5), where σ_y is the yield stress, d is the average grain diameter, and σ₀ and k_y are constants specific to a particular material.

Word forms

Hall-Petch equation the Hall-Petch equation

Etymology

Independently discovered by English scientists Eric O. Hall and Norman J. Petch, in 1951 and 1953 respectively.

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