Application of a time-dependent constitutive model to rheocast systems |
| |
Authors: | OJ Llegbusi |
| |
Affiliation: | (1) Department of Mechanical, Industrial and Manufacturing Engineering, Northeastern University, 02115 Boston, MA, USA |
| |
Abstract: | A mathematical model has been developed to describe the velocity field in an agitated Al- 5Cu alloy in which B4C particles
were suspended at different loading rates of up to 40 %. The material system was agitated by means of an electromagnetic rotary
stirrer. The non- Newtonian behavior of the melt/solid slurry was allowed for using two models: the steady- state model of
Joly and Flemings and the model of Brown, which takes account of time- dependent behavior. Calculations have shown that the
two models behave similarly at high shear rates. In addition, if agitation was discontinued, very little time was required
for the velocity (and hence the fluidity) of the slurry to decay. |
| |
Keywords: | mathematical model non-Newtonian flow rheocasting semisolid slurry time-dependent constitutive model |
本文献已被 SpringerLink 等数据库收录! |
|