ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Extrusion is a well established technology for the production of complex sections of aluminiumalloys. Thixo-extrusion in comparison to traditional hot-extrusion offers several advantages such aslower extrusion and friction forces, higher material fluidity, longer tool life etc. Aluminium alloy5182 is an important commercial alloy characterized by high strength and ductility, high corrosionresistance and good formability; it is commonly used for the production of wrought automotivecomponents and it is also suitable for semi-solid applications thanks to its wide solidification range.The aim of this paper is to attempt the shaping of 5182 Al-Mg alloy through the thixo-extrusionprocess using a ceramic tool and evaluating the effect of different routes of making the feedstock onthe semisolid microstructure. Particularly, two different methods were investigated: Near-soliduscasting and Roll-casting using a cooling slope.All the samples produced were characterized by metallographic analysis in order to measure globulesize and shape factor, as the main criteria used for assessing thixo-formability
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.115.pdf
