Carbide reactions in following three chromium steels after isothermal transformation have been studied by measuring electrical resistance and Curie points of carbides.
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During the isothermal transformation of these steels, θ-phase carbide containing low Cr is formed, and it dissolves Cr to equilibrium content after the transformation. In steels B and C, the saturated θ-phase changes its form by carbide reaction as listed in the next table.
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