Paper Title:
Controlling the Semisolid Grain Size during Solidification
  Abstract

This paper will use a new method for predicting grain size and then apply it to various solidification environments to reveal which factors are dominant in determining the final grain size. This study will only focus on methods where the grain size is set during a solidification process. These processes include grain refinement by inoculation of the melt with grain refining particles, increasing the cooling rate, low superheat casting, ultrasonic treatment and the use of chill moulds. Each of these methods can control the grain size to some extent but in order to predict the outcome it needs to be understood how the alloy constitution, inoculant particle characteristics and the casting conditions affect the prime nucleation event for the formation of new grains. These methodologies are currently being used, or have potential to be used, for the production of fine spherical grained semi-solid slurries.

  Info
Periodical
Solid State Phenomena (Volumes 141-143)
Edited by
G. Hirt, A. Rassili, A. Bührig-Polaczek
Pages
355-360
DOI
10.4028/www.scientific.net/SSP.141-143.355
Citation
D. H. StJohn, M. Easton, M. Qian, "Controlling the Semisolid Grain Size during Solidification", Solid State Phenomena, Vols. 141-143, pp. 355-360, 2008
Online since
July 2008
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: Mark Easton, David H. StJohn, Lisa Sweet
Abstract:Grain refinement and hot tearing are important key factors affecting the quality of castings. There have been substantial advances in the...
213
Authors: David H. St. John, Mark A. Easton, Peng Cao, Michael Bermingham, Ma Qian
Chapter 2: Casting & Solidification
Abstract:The development of grain refinement technologies began in the 1930s in response to the need to improve the mechanical properties of as-cast...
123