鉄中の介在物のまわりからの転位の発生の観察

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タイトル別名
  • Nucleation of Dislocations Around Inclusions in Iron
  • テツ チュウ ノ カイザイブツ ノ マワリ カラ ノ テンイ ノ ハッセイ ノ カンサツ

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Nucleation of dislocations around inclusions in iron containing small particles of FeO, Al2O3 or Zr2O was investigated by means of transmission electron microscopy. Dislocation loops produced around inclusions by the prismatic punching were observed in iron containing FeO or Zr2O particles when annealed for 100 min at 800°C and furnace cooled. The number of loops generated from an inclusion varied from 2 to 18, and the loops occurred along close-packed ⟨111⟩ directions. These loops seemed to be produced by thermal stress arising, during cooling, from the difference in thermal expansion coefficient between the inclusion and the matrix. Generation of dislocations was also observed around inclusions and precipitates in iron deformed 2% at room temperature. The formation mechanism of prismatic punched dislocation loops was discussed.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 31 (4), 310-316, 1967

    公益社団法人 日本金属学会

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