ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
A simple method for estimating the apparent viscosity of semi-solid alloys wasinvestigated. A drop weight of 50Kg and backward extrusion equipments were used to test thedeformation. Backward extrusion was employed in a closed die system due to the very littleseparation of liquid from solid phases compared with other methods at very high deformation rate.The half of the calculated impact velocity, 700mm/s was considered as an average velocity fordeformation during the test, since the slop of the velocity changes against time is constant in themiddle stage of the deformation. The initial height of the sample and the thickness of the residualcompressed solid at the bottom of the cup were used to calculate the amount of apparent viscosityof A356 aluminum alloy in this work
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.379.pdf