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The effects of annealing on cold-worked Zr3Al

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Abstract

A study has been made of the effects of isothermal annealing on the hardness, the tensile properties and the microstructure of cold-worked Zr3Al (Ll2 type). For material rolled to a true strain of 0.29, complete recrystallization accounts for a recovery of hardness of 65 to 70 pet and for a reduction in yield strength of about 50 pet, independent of tem-perature. Grain growth accounts for further changes. The yield strength Σy obeys the relationship Σy = Σo +k y(-d)-1/2 where Σo andk y are constants andd is the average grain diameter of the fully recrystallized matrix. Recrystallization and grain growth kinetics, respectively, satisfy the expressionsf = 1-exp (-kt n) andd = Kt m wheref is the fraction recrystallized,t is time,k andK are parameters which increase with increasing temperature andm andn are constants.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Sherbrooke, Sherbrooke, Quebec, Canada

    M. Gagné (Graduate Research Student)

  2. Chalk River Nuclear Laboratories, Materials Science Branch Atomic Energy of Canada Ltd., Chalk River, Ontario, Canada

    E. M. Schulson (Research Officer)

Authors
  1. M. Gagné
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  2. E. M. Schulson
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Gagné, M., Schulson, E.M. The effects of annealing on cold-worked Zr3Al. Metall Trans A 7, 1775–1783 (1976). https://doi.org/10.1007/BF02817896

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