Age-hardening behavior of Al-7-10%Si-0.3%Mg alloy castings with water quenching and direct quenching

Shota Komura, Seiji Saikawa, Kenji Matsuda, Susumu Ikeno

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

Abstract

The solvus temperature of G.P. zones and/or clusters during the early stage of aging after solution treatment in Al-7%Si-0.3%Mg alloy was investigated by micro-vickers hardness measurement and transmission electron microscopy. In addition, the obtained result was compared the previous reported result of the Al-10%Si-0.3%Mg alloy. The alloys were cast by permanent mold process, homogenized at 813K for 36ks, cold rolled up to 68%, solution treated at 813K for 36ks, and then artificially aged at 348-523K after water-quenched (W.Q.) or direct-quenched into oil-bath at 348-523K for artificially aging (D.Q.). In the case of the aging temperature was highest, the peak hardness for the W.Q. condition was clearly higher than the D.Q. condition. This tendency is considered due to the difference of formation such as G.P. zones and/or clusters between W.Q. and D.Q. conditions. Also, these behaviors were similar to the previous reported result of the Al-10%Si-0.3%Mg alloy.

Original languageEnglish
Title of host publication72nd World Foundry Congress, WFC 2016
PublisherThe WFO (The World Foundry Organization Ltd)
Pages405-406
Number of pages2
ISBN (Electronic)9781510833128
StatePublished - 2016
Event72nd World Foundry Congress, WFC 2016 - Nagoya, Japan
Duration: 2016/05/212016/05/25

Publication series

Name72nd World Foundry Congress, WFC 2016

Conference

Conference72nd World Foundry Congress, WFC 2016
Country/TerritoryJapan
CityNagoya
Period2016/05/212016/05/25

Keywords

  • Aging
  • Al-Si-Mg alloy
  • Casting
  • Direct quench
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Materials Chemistry
  • Metals and Alloys

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