Enhanced Age Hardening in an Al-Mg-Si Alloy Using High-Speed Compression

Keitaro Horikawa; Yuki Kitani; Tomo Ogura; Akio Hirose; Makoto Takahashi; Hidetoshi Kobayashi

doi:10.2320/matertrans.L-M2015810

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Enhanced Age Hardening in an Al-Mg-Si Alloy Using High-Speed Compression

Keitaro Horikawa, Yuki Kitani, Tomo Ogura, Akio Hirose, Makoto Takahashi, Hidetoshi Kobayashi

著者情報

キーワード: aluminum-magnesium-silicon alloy, vacancy cluster, high-speed deformation, age hardening

ジャーナルフリー早期公開

論文ID: L-M2015810

DOI https://doi.org/10.2320/matertrans.L-M2015810

この記事には本公開記事があります。

The final version of this article is now available: Vol. 56 (2015), No. 7 pp. 1058-1062

詳細

抄録

The age hardening of an Al-Mg-Si alloy was enhanced by the effect of high-speed (10⁵ s⁻¹) compression prior to aging. This enhancement of the age hardening is brought about by the formation of vacancy clusters during high-speed compression. High resolution transmission electron microscopy reveals that these vacancy clusters form stacking fault tetrahedra. Following peak aging, vacancy clusters and aging precipitates coexist in the grain interior. The high aging hardness obtained following high-speed compression is most probably due to the combined effects of vacancy and precipitation hardening.

責任著者(Corresponding author)

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