Effect of Ag addition to Zn22 mass%Al2 mass%Cu alloy on the four-phase reaction

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Abstract

The effect of Ag additions to the four-phase, was studied experimental and thermodynamically using Zn22 mass%Al2 mass%Cu base alloys with four Ag contents from 0 to about 4 mass% Ag. SEM and XRD results indicated the presence of the ¸ A phase decreased as the Ag content increased for the aged alloys which can be attributed to the stabilization of the ¾ phase because of its increase in Ag content which is in agreement with Thermo-Calc results. The Ag addition also promoted a slowest decrease in hardness in the aging curves at 200°C which can be attributed to the slowest diffusion process for the quaternary alloy.

Original languageEnglish
Pages (from-to)717-723
Number of pages7
JournalMaterials Transactions
Volume59
Issue number5
DOIs
StatePublished - 2018
Externally publishedYes

Keywords

  • Ag additions
  • Aging curves
  • Four-phase reaction
  • Thermodynamic stability
  • Zn22mass%Al2mass%Cu alloy

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