Fe-3%Si合金の2次再結晶に及ぼすAlN析出の影響

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タイトル別名
  • Effect of AlN Precipitation on the Secondary Recrystallization of Fe-3% Si Alloy
  • Fe 3パーセント Si ゴウキン ノ 2ジ サイケッショウ ニ オヨボス A

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In an attempt to clarify the mechanism of the secondary recrystallization in 3% Si steel containing AlN and MnS as inhibitors, the relationship between the sharpness of the secondary recrystallization texture and the precipitation behaviour of AlN and MnS was investigated through changing the dew point of primary annealing atmosphere and the dew point and the N2 partial pressure of secondary annealing atmosphere.<BR>1) The precipitation of AlN during secondary recrystallization annealing increases more when the dew point at primary annealing atmosphere is 69°C than when it is 50°C, in the case the N2 partial pressure of the secondary recrystallization annealing atmosphere is high.<BR>2) When the precipitation of AlN is adequately supressed during secondary recrystallization annealing by controlling either the dew point of the primary annealing atmosphere or the N2 partial pressure of the secondary recrystallization annealing atomsphere, the onset of the secondary recrystallization temperature is raised and the sharp secondary texture is obtained.<BR>3) The secondary recrystallization mentioned above can be successfully explained by the new mechanism of secondary recrystallization considering the special grain boudary migration characteristics of coincidence boundaries under precipitates and the distribution of the coincidence boundaries in the primary matrix.

収録刊行物

  • 鉄と鋼

    鉄と鋼 73 (14), 1746-1753, 1987

    一般社団法人 日本鉄鋼協会

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