Effect of die temperature on tensile property of rheocast phosphor bronze

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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Semi-solid slurry of phosphor bronze with fine solid granules for rheocasting was tried to make by passing the low-superheat melt through an opening between a rotating regular octagonal rotor and a circumscribed chill block. The effect of rotational speed on the structure of a solidified small ingot was mainly investigated. The ingot structures were changed from the dendrite of rotor-free condition to the rosette at the rotational speed of 50rpm, and the granular with a mean size of about 50μm at higher than150rpm. The slurries made at 150rpm were rheocast to a cylindrical shape cavity within a die kept at different temperatures from 573 to 1173K by the use of a high pressure casting machine. Microstructures of rheocast cylindrical shape products were granular at the die temperatures lower than 773K and changed to grained one as like recrystallized at higher than 973K. Together with the microstructure change, poor tensile ductility less than 3% at the lowest die temperature was improved up to about 60% at 973K.

Original languageEnglish
Title of host publicationTHERMEC 2011
PublisherTrans Tech Publications Ltd
Pages931-936
Number of pages6
ISBN (Print)9783037853030
DOIs
StatePublished - 2012
Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
Duration: 2011/08/012011/08/05

Publication series

NameMaterials Science Forum
Volume706-709
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Country/TerritoryCanada
CityQuebec City, QC
Period2011/08/012011/08/05

Keywords

  • Granular structure
  • High pressure casting
  • Phosphor bronze
  • Rheocast
  • Semi-solid casting
  • Semi-solid slurry
  • Solidification structure
  • Tensile property

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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