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DIFFUSION PROCESSES IN THE COURSE OF HOMOGENEOUS ANNEALING OF ALZNMG ALLOY

1 WEISS Viktorie
Institution:
1 The Institute of Technology and Business in České Budějovice, České Budějovice, EU, 19638@mail.vstecb.cz
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
1570-1576
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
445 views / 190 downloads
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Abstract

In the course of homogenizing annealing of aluminum alloys being cast continually or semi-continually it appears that chemical inhomogeneity takes off within separate dendritic cells (crystal segregation). It is about a diffusional 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. Temperature, homogenization time, the size of dendritic cells and diffusion length influence 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.

Keywords: Homogenizing annealing, AlZn5.5Mg2.5Cu1.5 alloy, Vickers micro-hardness test, crystal #|# segregation, EDX analysis

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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