The observation of grain boundary phases in Al-Zn-Mg alloys containing dispersoids

Uguz A., Bayram A.

METALL, vol.58, pp.44-46, 2003 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 58
  • Publication Date: 2003
  • Journal Name: METALL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.44-46
  • Bursa Uludag University Affiliated: Yes

Abstract

Grain boundary particles of a ternary, a Mn- containing and a Zr-containing Al-Zn-Mg alloys have been investigated. In the Mn-containing alloy, dispersoids are encountered the grains as well as at the grain boundaries (GBs) together with the equilibrium eta-phase. Large Mn-bearing particles are also present at the grain boundaries in this alloy, however they do not pin the GBs as the Zr-bearing particles. The distribution of the Zr-bearing dispersoids is observed to be irregular both in the grain itself and at the grain boundaries. These effectively impede grain growth.