Title: Inoculation of aluminium EN AW-Al99,5 structure

Authors: Jan Szajnar, Tomasz Wrobel

Addresses: Department of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Towarowa 7, Gliwice 44-100, Poland. ' Department of Foundry, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Towarowa 7, Gliwice 44-100, Poland

Abstract: The main aim of studies was to determine common influences of two different refinement methods on EN AW-Al99,5 primary structure and developing of refinement mechanism. The first method is inoculation with small amount of (Ti+B) less than obligatory standard PN-EN 573-3 and the second method is influence of electromagnetic field on aluminium crystallisation process. These methods of structure refinement are particularly important in continuous and semi-continuous casting where products are used for plastic forming. Large columnar crystals zone result in forces extrusion rate reduction and during the ingot rolling delamination of external layers can occur. [Received 17 October 2006; Accepted 15 May 2007]

Keywords: working properties; materials properties; products; magnetic field; inoculation; aluminium; electromagnetic field; crystallisation; structure refinement; casting; plastic forming; extrusion; ingot rolling; delamination; external layers.

DOI: 10.1504/IJCMSSE.2007.017254

International Journal of Computational Materials Science and Surface Engineering, 2007 Vol.1 No.5, pp.607 - 619

Published online: 21 Feb 2008 *

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