Comparison of mechanical characteristics between semi-liquid state and semi-solid state in Al-Mg alloys

Atsushi Zama, Kazuhiro Toshimitsu, Tomoya Watanabe, Hiroyuki Chiba, Takanari Toriyama, Makoto Yoshida

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In our previous works, tensile test devices for both semi-liquid and semi-solid aluminum alloys were developed. In this report, comparison of mechanical properties such as ultimate tensile strength(UTS)and fracture strain between semiliquid and semi-solid Al-Mg alloy was examined. Difference of the mechanical properties will be caused by the microstructural change during heating process in the tensile test of semi-liquid alloy. By constant load creep test to the semi-liquid alloy, about 90% deformation of permanent and 10% of elastic deformation were found. Thus, in the thermal- stress analysis, solid-liquid co-existence aluminum alloy should be dealt as visco-elastic or viscoelasto-plastic material rather than elasto-plastic material.

Original languageEnglish
Pages (from-to)446-451
Number of pages6
JournalKeikinzoku/Journal of Japan Institute of Light Metals
Volume61
Issue number9
DOIs
Publication statusPublished - 2011 Nov 21

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Keywords

  • Cracking
  • Die-casting
  • Direct-chill casting
  • Hot tear
  • Solidification

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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