Microstructure in a plasma-nitrided Fe-18 mass% Cr alloy

G. Miyamoto, A. Yonemoto, Y. Tanaka, T. Furuhara, T. Maki

研究成果: Article査読

45 被引用数 (Scopus)

抄録

Microstructures in a nitrided zone of an Fe-18 mass% Cr binary alloy plasma-nitrided at temperatures between 743 and 943 K were investigated by means of electron microscopy. The morphology of the nitrided zone changed drastically depending on the nitriding temperatures. On nitriding at 943 K, disk- and rod-shaped CrN and rod-shaped Cr2N were observed in the original ferrite grains. Examination of orientation relationships between the ferrite matrix and the rod-shaped Cr nitrides suggested that a transition from Cr2N to CrN occurs during nitriding at 943 K. On nitriding at 843 K, elongated columnar-shaped ferrite grains containing regularly spaced lamellar CrN precipitates developed from the specimen surface and grew inwards. Most of the columnar ferrite grains held Σ9 coincidence site lattice relationships with respect to the original ferrite grains. The columnar ferrite tends to form at a lower nitriding temperature or a higher Cr content.

本文言語English
ページ(範囲)4771-4779
ページ数9
ジャーナルActa Materialia
54
18
DOI
出版ステータスPublished - 2006 10

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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