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.
International Journal of Computational Materials Science and Surface Engineering, 2007 Vol.1 No.5, pp.607 - 619
Published online: 21 Feb 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article