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Journal of Materials Science

, Volume 5, Issue 2, pp 105–116 | Cite as

Clustering phenomena in Al-4.4 at. % Zn alloy with 0.03 and 0.08 at. % Ag additions

  • K. S. Raman
  • E. S. D. Das
  • K. I. Vasu
Papers

Abstract

The influence of 0.03 and 0.08 at. % Ag additions on the clustering of Zn atoms in an Al-4.4 at. % Zn alloy has been studied by resistometry. The effect of quenching and ageing temperatures shows that the ageing-ratio method of calculating the vacancy-solute atom binding energy is not applicable to these alloys. Zone-formation in Al-Zn is unaffected by Ag additions, but the zone-reversion process seems to be influenced. Apparent vacancy-formation energies in the binary and ternary alloys have been used to evaluate the v-Ag atom binding energy as 0.21 eV. It is proposed that, Ag and Zn being similar in size, the relative vacancy binding results from valency effects, and that in Al-Zn-Ag alloys clusters of Zn and Ag may form simultaneously, unaffected by the presence of each other.

Keywords

Polymer Binding Energy Ternary Alloy Valency Effect Atom Binding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1970

Authors and Affiliations

  • K. S. Raman
    • 1
  • E. S. D. Das
    • 1
  • K. I. Vasu
    • 1
  1. 1.Materials Research Group, Metallurgy DepartmentIndian Institute of ScienceBangaloreIndia

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