Effect of Polygonal Rotor Process on Solidification Structure of Lead-Free Bismuth Bronze

Takahisa Kose; Yasuhiro Uetani; Katsuyuki Nakajima; Kenji Matsuda; Susumu Ikeno

doi:10.4028/www.scientific.net/MSF.654-656.1389

Paper Titles

Undercooling Behavior and Solidification Microstructure Evolution of Sn-Cu-Ni Solders Modified by Minute Amount of Mixed Rare Earth La-Ce
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Strength and Conductivity of Deformed Cu-Fe Composites after Solidified with a Horizontal Magnetic Field
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Solidification Mechanisms in the Sn-Cu-Ni Lead-Free Solder System
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The Correlation between the Liquid Structure and the Solidification Microstructure of Sn-Cu Lead-Free Solders
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Effect of Polygonal Rotor Process on Solidification Structure of Lead-Free Bismuth Bronze
p.1389

Non-Equilibrium Solidification in Cu-Mg-Sn Alloys for Tribological Applications
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Formation of Primary Intermetallic Compounds in Sn-Ag-Cu Alloys
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Electromagnetic Continuous Casting Process for Near Net Shape Aluminum Alloy Billet
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Monte Carlo Simulation of Thermophysical Properties for Al-Ce Liquid Alloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Effect of Polygonal Rotor Process on...

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.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

1389-1392

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.1389

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Online since:

June 2010

Authors:

Takahisa Kose, Yasuhiro Uetani, Katsuyuki Nakajima, Kenji Matsuda, Susumu Ikeno

Keywords:

Granular Structure, High Pressure Casting, Lead-Free Bismuth Bronze, Rheocast, Semi-Solid Casting, Semi-Solid Slurry, Solidification Structure

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