Paper Title:
The Effect of Constricting the Melt Flow on Mechanical Properties of High Pressure Die Castings
  Abstract

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, R. G. O'Donnell, M. Givord, B. R. Finnin, "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
$32.00
Share

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

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

Authors: Hong Yan Ruan, Hui Xia Liu, S.Y. Ding, K. Yang, Xiao Wang, Lan Cai
Abstract:Based on premixed high pressure water jet cutting, five kinds of nozzle models were established, and the control equations and closed...
565
Authors: Dayalan R. Gunasegaram, Michel Givord, Robert G. O'Donnell
Abstract:ATM high pressure die casting technology (ATM) is a variant of the traditional high pressure die casting (HPDC) process and is...
27
Authors: Kuei Hsiang Cheng, Chih Hsien Lin, Cheng Chao
Chapter 7: Hydraulics
Abstract:This study uses SMS-2D unsteady flow model to simulate apron setting and discuss its scour protection due to bow wave around the bridge pier...
1182
Authors: Chih Hsien Lin, Kuei Hsiang Cheng, Cheng Chao
Chapter 5: Hydraulic Engineering Construction
Abstract:In order to reduce erosion impact around pier footings, the SMS-2D applied in this study to analysis stepped apron set in critical scour...
957
Authors: Yan Yin, Jin Guo Ta, Rui Hua Zhang, Zhan Chong Wang
Chapter 2: Applied Mechanics and Mechanical Engineering
Abstract:Laser aided activating TIG welding was called LA-TIG. At first, the surface of weld was melted by the mini power laser protected by oxygen,...
117