t 1160oC, Ferrite is less stable than austenite by 74Jmol-1. However , at this temperature it can be possible to stabilize ferrite with regard to austenite if 6 at % Si is added in the steel composition. Estimate how much Si is required to keep a ferrite microstructure up to 1160oC if this steel has to contain 0.8%Ni. The distribution coefficient of Ni between Austenite and Ferrite is 1.3

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t 1160oC, Ferrite is less stable than austenite by 74Jmol-1. However , at this temperature it can be possible to stabilize ferrite with regard to austenite if 6 at % Si is added in the steel composition. Estimate how much Si is required to keep a ferrite microstructure up to 1160oC if this steel has to contain 0.8%Ni. The distribution coefficient of Ni between Austenite and Ferrite is 1.3.   

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