THE EFFECT OF Zr ON AGING KINETICS AND PROPERTIES OF AS-CAST AA6082 ALLOY


KAHRIMAN F. , ZEREN M.

INTERNATIONAL JOURNAL OF METALCASTING, cilt.11, ss.216-222, 2017 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 11 Konu: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s40962-016-0047-1
  • Dergi Adı: INTERNATIONAL JOURNAL OF METALCASTING
  • Sayfa Sayısı: ss.216-222

Özet

In aluminum alloys, zirconium is usually used as a recrystallization inhibitor and microstructure refiner. Its minor addition to alloy composition could produce a significant precipitation hardening response and enhance the both physical and chemical properties. In this work, the effect of zirconium on the aging kinetics of a commercial as-cast AA6082 alloy was investigated using Avrami equations obtained from the variation in electrical conductivity values as a function of aging time at 180 degrees C (356 degrees F). The results showed that the aging kinetics slowed down and the matrix hardness of aged alloy enhanced due to Zr addition.