Paper Title:
Grain Refinement and Hot Tearing of Aluminium Alloys - How to Optimise and Minimise
  Abstract

Grain refinement and hot tearing are important key factors affecting the quality of castings. There have been substantial advances in the understanding of both of these phenomena over the last two decades. The paper discusses strategies for obtaining the lowest cost grain refiner addition and provides an explanation for how the refinement of equiaxed grains leads to a reduction in hot tear susceptibility. However, it also provides a warning that adding more grain refiner may not be better for reducing hot tear susceptibility. Alloy factors affecting hot tearing are also discussed. Finally, a list of six key considerations is provided to help casthouse and foundry engineers when trying to optimise grain refinement and reduce hot tearing.

  Info
Periodical
Edited by
J. A. Taylor, J. F. Grandfield, A. Prasad
Pages
213-221
DOI
10.4028/www.scientific.net/MSF.630.213
Citation
M. Easton, D. H. StJohn, L. Sweet, "Grain Refinement and Hot Tearing of Aluminium Alloys - How to Optimise and Minimise", Materials Science Forum, Vol. 630, pp. 213-221, 2010
Online since
October 2009
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Price
$32.00
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