The Effect of Constricting the Melt Flow on Mechanical Properties of High Pressure Die Castings

Abstract:

Article Preview

The addition of a constriction in the melt flow path of high pressure die castings is discussed in terms of its influence on modifications to mechanical properties. It is shown through experimentation that the ultimate tensile strength and elongation to fracture of as-cast tensile specimens increased when the melt flowed through a constricted path. It is proposed that defect-forming inclusions were disintegrated more efficiently in the constricted runner through increased strain rates and turbulent dissipation rates. Increased turbulence is also presumed to be the cause for the greater dispersion of defects. The suggestions are supported with calculations aided by computational fluid dynamics simulations.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

1456-1459

DOI:

10.4028/www.scientific.net/MSF.654-656.1456

Citation:

D. R. Gunasegaram et al., "The Effect of Constricting the Melt Flow on Mechanical Properties of High Pressure Die Castings", Materials Science Forum, Vols. 654-656, pp. 1456-1459, 2010

Online since:

June 2010

Export:

Price:

$35.00

In order to see related information, you need to Login.