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Thermally assisted motion of dislocations in solid solution-strengthened fcc alloys and the concept of “stress equivalence”

  • Ali S. Argon EMAIL logo
Published/Copyright: February 14, 2022
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Abstract

It is demonstrated that relatively well established developments of the collective interactions of moderately concentrated solute atoms with a dislocation can furnish a satisfactory model for the thermally assisted motion of dislocations through such solute fields and provide insight into the concept of “stress equivalence” exhibited by binary fcc alloys. This is consistent with known dependencies of the plastic shear resistance on temperature and the universal dependence of the activation volume on flow stress alone, for a large family of binary fcc alloys of different solute concentration. Both the successful features of the model and some of its shortcomings are discussed.


Prof. Ali S. Argon, Room 1-306 Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, 02139, U. S. A. Tel.: +1 617 253 2217 Fax: +1 617 258 8742

Dedicated to Professor Dr. Peter Neumann on the occasion of his 65th birthday


  1. This study which was unsupported, is a by-product of a chapter of a book in preparation, to be published by Oxford University Press in 2004. I am grateful to Prof. R. Abeyaratne and Dean T. Magnanti for their continued support of this project. I also thank Mr. Jin Yi for his help in the preparation of this paper.

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Received: 2004-01-05
Accepted: 2004-02-10
Published Online: 2022-02-14

© 2004 Carl Hanser Verlag, München

Articles in the same Issue

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  2. Editorial
  3. Editorial
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  27. Notifications/Mitteilungen
  28. Personal/Personelles
  29. Conferences/Konferenzen
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