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What is the maximum solubility of carbon in iron? Justify your answer wrt Fe-Fe3C equilibrium diagram.
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Hello, Maximum solubility is can be understood by different phases of iron with temperature and corresponding maximum carbon content at that temperature. Like for alpha iron, at room temperature the max solubility of carbon is 0.002 wt% for alpha iron maximum is at 723 C and it is 0.02 wt% for gammaRead more
Hello,
Maximum solubility is can be understood by different phases of iron with temperature and corresponding maximum carbon content at that temperature.
Like for alpha iron, at room temperature the max solubility of carbon is 0.002 wt%
for alpha iron maximum is at 723 C and it is 0.02 wt%
for gamma iron it is 2.1 wt% at 1147 C
for delta iron it is 0.09 wt% at 1496 C
Solubility varies as the temperature varies.
Hope this helps.
See lessAll the phases will be converted into Pealite +ferrite(hypo), 100%P(eutectoid), P+Fe3C(hype r), P+Fe3C+ Gr(cast iron) under slowcooling, The RT structure/phase will be Fe-Fe3C only. Therefore maximum solubility of carbon in iron comes from %C in Fe3C.
All the phases will be converted into Pealite +ferrite(hypo), 100%P(eutectoid), P+Fe3C(hype
See lessr), P+Fe3C+ Gr(cast iron) under slowcooling, The RT structure/phase will be Fe-Fe3C only. Therefore maximum solubility of carbon in iron comes from %C in Fe3C.
%C in Fe3C = (3×56+12)/12 = 6.67%(maximum solubility in Fe). Fe-Fe3C phase diagram(meta stable)has been drawn on this basis by dilatometry.
%C in Fe3C = (3×56+12)/12 = 6.67%(maximum solubility in Fe). Fe-Fe3C phase diagram(meta stable)has been drawn on this basis by dilatometry.
See lessMaximum upto 6.67 wt% c
Maximum upto 6.67 wt% c
See less