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냉간가공한 오스테나이트계 강재의 극저온 특성에 미치는 Ni 및 N의 영향

The Effect of Nickel and Nitrogen on Cryogenic Properties of Austenitic Stainess Steel

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주제분류기계공학

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Abstract

Cryogenic characteristics of austenitic stainless steel based on 304 steel with nickel and nitrogen were investigated at room temperature and -196oC. The alloys were fabricated by vacuum arc furnace and cold working after homogenization treatment. The addition of nickel and nitrogen decreased the stability of d-ferrite and induced the stability against the formation of martensite to result significantly in enhancing ductility at -196oC. Nitrogen reduced Md temperature, which was beneficial to the tensile strength and elongation at 25oC and -196oC.

참고문헌 (3)

  1. Richard P. Reed, "Materials at Low Temperature American Society for Metals", pp.390~ (1983)
  2. F. B. Pick Ering, "Physical Metalllurgy and Design of Steels", pp.226~ (1978)
  3. Y. W. Chang, "Constitution Lows for Engineering Materials", pp.292~ (1987)

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