Surface modification by nitriding-quenching for steels

Naoko Sato, Mayumi Ojima, Yo Tomota, Kojiro Inaba

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

The nitriding-quenching is a new surface modification method which consists of heating a steel at 973-1073K in a nitrogen/ammonia gas atmosphere followed by quenching. From the fundamental point of view, this unique technique was applied to low carbon steels to investigate basic features of this treatment. Microstructure observations, X-ray diffraction, electron probe microanalysis, X-ray residual stress measurement, tensile test, fatigue test, and corrosion test were performed. It is found that high nitrogen martensite was formed near the surface and the hardness was increased up to HV800, which was dependent on the volume of retained austenite and nitrogen concentration. The nitriding-quenched steel plates show high fatigue strength and lower corrosion current density in an active solution region.

本文言語English
ホスト出版物のタイトルProceedings of the 17th IFHTSE Congress
出版社The Japan Society for Heat Treatment (JSHT)
ページ304-307
ページ数4
ISBN(電子版)9780000000002
出版ステータスPublished - 2009
外部発表はい
イベント17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008 - Kobe, Japan
継続期間: 2008 10 262008 10 28

出版物シリーズ

名前Proceedings of the 17th IFHTSE Congress
1

Other

Other17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008
国/地域Japan
CityKobe
Period08/10/2608/10/28

ASJC Scopus subject areas

  • 表面、皮膜および薄膜
  • 凝縮系物理学
  • 材料力学

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