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


KAHRIMAN F. , ZEREN M.

INTERNATIONAL JOURNAL OF METALCASTING, vol.11, no.2, pp.216-222, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 2
  • Publication Date: 2017
  • Doi Number: 10.1007/s40962-016-0047-1
  • Title of Journal : INTERNATIONAL JOURNAL OF METALCASTING
  • Page Numbers: pp.216-222

Abstract

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.