超急冷凝固したＡｌ‐６％Ｈｆ合金の相分解

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タイトル別名
  • Phase decomposition in splat quenched Al-6%Hf alloy
  • チョウ キュウレイ ギョウコシタ Al 6パーセント Hf ゴウキン ノ ソウ

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抄録

The solidfied structure and phase decomposition during tempering of splat quenched Al-Hf alloys were electron microscopically examined. The solid solubility of Hf in the splat quenched Al-Hf alloy extends up to 10%. The grain boundary mobility of the splat quenched Al-Hf alloy is so high that discontinuous precipitation caused by a grain boundary reaction preceds continuous precipitation within grain. Precipitates formed by the grain boundary reaction are fine needle-shaped and have a metastable crystal structure. When the alloy solidifies at a slow rate, an angular precipitate forms within a grain. The microstructure of the angular precipitate and the interaction between moving grain boundary and the precipitate are discussed.

収録刊行物

  • 軽金属

    軽金属 32 (8), 408-412, 1982

    一般社団法人 軽金属学会

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