ニッケル含有13%Cr鋳鋼の熱処理による強じん化について

抄録

  To improve the toughness of 13%Cr cast steel by heat treatment, low temperature quenching treatment from the (α + γ) transformation range in the intermediate stage between usual quenching and tempering was applied and studied in detail. It is shown that improved toughness and lower transition temperature are obtained by this treatment and that the toughness is not influenced very much by the cooling rate after this treatment. It is also shown that this treatment is most effective in lower Ni content steel improving temper embrittlement and extending the favorable tempering temperature range.