ＳｉＣ粒子分散型Ａｌ‐１％Ｍｇ２Ｓｉ合金複合材料の時効析出挙動

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タイトル別名
  • Age-precipitation behavior in SiC particle dispersed Al-1mass%Mg2Si alloy composite materials.
  • SiC粒子分散型Al-1%Mg2Si合金複合材料の時効析出挙動
  • SiC リュウシ ブンサンガタ Al 1パーセント Mg2Si ゴウキン フク

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抄録

Aging process of SiC particle dispersed Al–lmass%Mg2Si 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 introduced 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.

収録刊行物

  • 軽金属

    軽金属 47 (10), 527-532, 1997

    一般社団法人 軽金属学会

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