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 |
巻 | 47 |
号 | 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