Succeding to the first report, influences of various elements, C, Mo, W, Ni etc., on the sectional diagrams of Fe-C-Cr-Si series were studied. According to our results, C and Ni widen γ-region but Mo and W narrow γ-loop region. Therefore, the chemical composition of silcrome steel must be adjusted so as to lie in γ-loop according to our sectional diagrams.
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