Age-precipitation behavior in SiC parade dispersed Al-1 mass%Mg2Si alloy composite materials

Susumu Ikeno*, Kenji Matsuda, Takashi Teraki, Kiyoshi Terayama, Seichi Rengakuji, Fojio Shinagawa, Yasuhiro Uetani

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

2 被引用数 (Scopus)

抄録

Aging process of SiC particle dispersed Al-1 mass%MgpSi alloy composite materials was investigated by micro-Vickers hardness measurement and transmission electron microscope observation. In the SiC particle dispersed composite materials, preferential precipitates on dislocations which had been introdued during quenching after solid solution treatment are observed. The age hardenability slightly decreased as compared with that of the matrix alloy. At peak aged condition of composite materials, most of the precipitates have the structure that is characteristic by parallelogram shaped arrays of bright dots with the intervals of 0.77 and 0.67 nm. The arrays of bright dots of the precipitates also posses an adjacent interior angle of 75 degrees. At over aged conditions, one kind of intermediate precipitates, the type-C precipitate having the lattice parameter of a =1.04 nm and c=0.405 nm are observed at relatively higher frequencies corresponding to the tendency of the type-C precipitates to precipitate preferentially on the dislocation.

本文言語英語
ページ(範囲)527-532
ページ数6
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
47
10
DOI
出版ステータス出版済み - 1997/10

ASJC Scopus 主題領域

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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