Rheo-extrusion of A7075 aluminum alloy utilizing semi-solid slurry manufactured by simple method

Ryotaro Nagata*, Yasuhiro Uetani, Hidetoshi Takagi, Kenji Matsuda, Susumu Ikeno

*Corresponding author for this work

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

5 Scopus citations

Abstract

In order to extrude A7075 aluminum alloy soundly from melt without using feed stock billet, rheo-extrusion was tried by utilizing semi-solid slurry with fine solid granules made by employing cooling tube. When the melt moving down inside thin tube was adequately cooled in different ways and introduced into an extrusion container kept at semi-solid temperature of 873K, structure of solidified slurries were granular and mean grain sizes of about 60 to 120∞m could be obtained. Subsequently, these slurries were extruded to round bars at various extrusion ratios (28 to 64) and press ram speed of 10mm/s, just after cooling to 833K. The newly developed slurries could easily be extruded to bars with smooth surfaces at lower forces. Although every tensile strength of extruded bars were lower than that of hot-extruded one, there was a tendency that finer the solid granules in slurry, higher the tensile strength of extruded bar.

Original languageEnglish
Title of host publicationAluminium Alloys 2006
Subtitle of host publicationResearch Through Innovation and Technology - Proceedings of the 10th International Conference on Aluminium Alloys
PublisherTrans Tech Publications Ltd
Pages1847-1852
Number of pages6
EditionPART 2
ISBN (Print)9780878494088
DOIs
StatePublished - 2006
Event10th International Conference on Aluminium Alloys, (ICAA-10) - Vancouver, Canada
Duration: 2006/07/092006/07/13

Publication series

NameMaterials Science Forum
NumberPART 2
Volume519-521
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference10th International Conference on Aluminium Alloys, (ICAA-10)
Country/TerritoryCanada
CityVancouver
Period2006/07/092006/07/13

Keywords

  • A7075 aluminum alloy
  • Cooling tube
  • Extrudability
  • Fine solid granule
  • Rheo-extrusion
  • Semi-solid slurry
  • Tensile property

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Rheo-extrusion of A7075 aluminum alloy utilizing semi-solid slurry manufactured by simple method'. Together they form a unique fingerprint.

Cite this