Effect of pre-aging conditions on T5 heat treatment behavior of Al-9%Si-0.3%Mg die-casting alloy

Tatsuya Inoue, Masahide Goto, Atsushi Yamaguchi, Tetsuo Otake, Akihiro Kuroda, Makoto Yoshida

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Effect of pre-aging conditions on T5 heat treatment behavior of Al-9.0%Si-0.3%Mg die-casting alloy was investigated by using hardness measurement, differential scanning calorimetric analysisDSCand transmission electron microscopy TEM. T5 treated alloy showed the positive effect on the two-step aging at pre-aging temperatures between 273 and 343 K, unlike T6 treated alloy which showed the negative effect at pre-aging temperatures below 343 K. The positive effect on two-step aging seems to be the characteristic behavior at T5 heat treatment. Difference of two-step aging behavior between T5 and T6 treatments seems to result from the difference of cluster1formed in the pre-aging process below 343 K. Higher water-quenching temperature after casting tended to increase the hardness after artificial aging.

Original languageEnglish
Pages (from-to)507-512
Number of pages6
JournalKeikinzoku/Journal of Japan Institute of Light Metals
Volume61
Issue number10
DOIs
Publication statusPublished - 2011

Keywords

  • Al-Si-Mg alloy
  • Die-casting
  • Heat treatment
  • T5
  • Two-step aging

ASJC Scopus subject areas

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

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