Mechanical properties of Al–Si–Cu alloys produced by the continuous casting process with heating process

Mitsuhiro Okayasu, Shuhei Takeuchi, Toshihiro Ochi

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Abstract

The mechanical properties of aluminium alloys produced by the continuous cast process and heating process (heat-cast-sample) were investigated, where the aluminium alloys are heated continuously to high temperatures for 1 h immediately following heated mould continuous casting (HMC) and sand gravity casting (SGC). The material strength and ductility of the aluminium alloys were irregularly altered depending on the heating temperature. The mechanical properties decreased when the heating temperature increased to 400 °C and were then recovered when the temperature increased to 520 °C. However, these properties decreased again when heated to more than 540 °C. The mechanical properties of the HMC-heat-cast-sample showed overall higher than those for the SGC-sample. In addition to high tensile strength, high ductility was obtained for the HMC-520 °C samples compared with those for the as-cast-sample. Such changes were found to be directly attributable to the different severity of precipitate; moreover the crystal orientation was unchanged even after the heating process.

Original languageEnglish
Pages (from-to)217-225
Number of pages9
JournalInternational Journal of Cast Metals Research
Volume30
Issue number4
DOIs
Publication statusPublished - Jul 4 2017

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Keywords

  • Cast aluminium alloy
  • continuous casting
  • heating process
  • mechanical property
  • microstructural characteristic

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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