Prediction of Density of Stainless Steel

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著者

    • MIZUKAMI Hideo
    • Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.
    • SHIRAI Yoshihisa
    • Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.
    • YAMANAKA Akihiro
    • Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.
    • WATANABE Tadao
    • Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd.

抄録

The change of the density of stainless steel with phase at temperature range from 773 K to 1973 K has been studied by a sessile drop profile method. Measurement of the density by a sessile drop profile method has to be carried out under heating conditions to avoid the influence both of undercooling and the shrinkage within the sample during solidification. Accuracy of experimental results was evaluated in comparison with previous studies for pure iron. The density of stainless steel was dependent on the phase but not chromium and nickel contents. Equations for prediction of the density in L, dand g phase regions were determined using the experimental results of<br><br>ρ<sub>L</sub> = -7.20×10<sup>-4</sup>Δ<I>T</I><sub>L</sub> + 7.04<br>ρ<sub>δ</sub> = 2.87×10<sup>-4</sup>Δ<I>T</I><sub>δ</sub> + 7.27<br>ρ<sub>γ</sub> = 4.40×10<sup>-4</sup>Δ<I>T</I><sub>γ</sub> + 7.43<br>18 mass%≤Cr≤25 mass%, 4 mass%≤Ni≤25 mass%, 773 K≤<I>T</I>≤1973 K<br><br>The density of δ and γ coexisting phase ( δ + γ) is then predicted from the following equation.<br><br>ρ<sub>(δ + γ)</sub> = ρ<sub>δ</sub>·<I>f</I><sub>δ</sub> + ρ<sub>γ</sub>·<I>f</I><sub>γ</sub><br>18 mass%≤Cr≤25 mass%, 4 mass%≤Ni≤25 mass%, 773K≤<I>T</I>≤1973 K<br>These estimated values are in good agreement with experimental results.

収録刊行物

  • ISIJ international

    ISIJ international 40(10), 987-994, 2000-10-15

    The Iron and Steel Institute of Japan

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