Effect of cobalt on the aging kinetics and the properties of a CuCoNiBe alloy


Atapek S. H.

MATERIALS TESTING, cilt.57, ss.17-21, 2015 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 57 Konu: 1
  • Basım Tarihi: 2015
  • Doi Numarası: 10.3139/120.110669
  • Dergi Adı: MATERIALS TESTING
  • Sayfa Sayısı: ss.17-21

Özet

In this study, the effect of cobalt on the aging kinetics of a precipitation hardening CuCoNiBe alloy was studied by variations in hardness and electrical conductivity. Based on the linear relationship between electrical conductivity and volume fraction of the precipitates, phase transformation kinetics of the alloys having different cobalt contents were formulated using the Avrami equation. It was concluded that (i) aging kinetics slowed down in high cobalt alloyed copper alloy, (ii) the calculated electrical conductivity values using Avrami equation were in good agreement with the experimental data, and (iii) aged alloys had higher hardness and electrical conductivity than the as-cast ones.