Paper Title:
Effect of Polygonal Rotor Process on Solidification Structure of Lead-Free Bismuth Bronze
  Abstract

Semi-solid slurry with fine solid granules for rheocasting was made from lead-free bismuth bronze by passing the low-superheat melt through an opening between a rotating regular octagonal rotor and a circumscribed chill block. We mainly investigated the effect of rotational speed on the structure of a solidified small ingot. The ingot structures changed from the dendrite of rotor-free condition to the rosette at the rotational speed of 50rpm and to the granular with a mean grain size of about 50m at higher than100 rpm. If the slurry made at 100rpm was rheocast to a disk shape by the use of a high pressure casting machine, the disk had almost uniform granular structures from the center to the edge regions.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1389-1392
DOI
10.4028/www.scientific.net/MSF.654-656.1389
Citation
T. Kose, Y. Uetani, K. Nakajima, K. Matsuda, S. Ikeno, "Effect of Polygonal Rotor Process on Solidification Structure of Lead-Free Bismuth Bronze", Materials Science Forum, Vols. 654-656, pp. 1389-1392, 2010
Online since
June 2010
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$32.00
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