The Crystal Segregation During Casting of the Alloy AlZn5.5Mg2.5Cu1.5

Journal title

Archives of Foundry Engineering




No 2

Publication authors


Theory of crystallization ; Heat treatment ; Homogenizing annealing ; AlZn5 ; 5Mg2 ; 5Cu1 ; 5 alloy ; Crystal segregation

Divisions of PAS

Nauki Techniczne


Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.


In the course of homogenizing annealing of aluminium alloys being cast continually or semi-continually it appears that chemical

inhomogenity takes off within separate dendritic cells (crystal segregation). It is about a diffusion process that takes place at the

temperature which approaches the liquid temperature of the material. In that process the transition of soluble intermetallic compounds and

eutectic to solid solution occurs and it suppresses crystal segregation significantly [1]. The temperature, homogenization time, the size of

dendritic cells and diffusion length influences homogenizing process. The article explores the optimization of homogenizing process in

terms of its time and homogenizing annealing temperature which influence mechanical properties of AlZn5,5Mg2,5Cu1,5 alloy.


The Katowice Branch of the Polish Academy of Sciences




Artykuły / Articles


ISSN 2299-2944