Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/68606
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Deformation behavior of semi-solid A356 Al-Si alloy at low shear rates: Effect of fraction solid |
Author: | Lashkari, O. Ghomashchi, R. |
Citation: | Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 2008; 486(1-2):333-340 |
Publisher: | Elsevier Science SA |
Issue Date: | 2008 |
ISSN: | 0921-5093 |
Statement of Responsibility: | Omid Lashkari, Reza Ghomashchi |
Abstract: | Conventional casting was employed to produce semi-solid metal, SSM, billets of A356 Al-Si alloy. The rheological behavior of the as-cast SSM billets was studied using the parallel plate compression viscometry. The compression tests were carried out at different applied pressures, billet temperatures and fractions solid. The rheological studies were conducted assuming the SSM slurry behaving as Newtonian or non-Newtonian fluid. The calculated viscosity numbers confirmed the pseudoplastic behavior of the SSM billets and were correlated to fraction solid and shear rate, through an empirical equation, to highlight the effect of metallurgical and process parameters on the viscosity of the SSM A356 alloy.log η = 5.56 - 1.38 fs - (1.56 fs + 0.14) log over(γ, {ring operator}), 0.33 < fs < 0.46. This equation is valid at very low shear rates, less than 0.01 s-1. © 2007. |
Keywords: | Al alloys Semi-solid metal Microstructure Rheology Viscosity |
Rights: | Copyright © 2007 Published by Elsevier B.V. |
DOI: | 10.1016/j.msea.2007.09.009 |
Published version: | http://dx.doi.org/10.1016/j.msea.2007.09.009 |
Appears in Collections: | Aurora harvest 5 Materials Research Group publications Mechanical Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.