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4. The mass fraction of eutectoid cementite in an iron-carbon alloy is 0.12 at a temperature just below 727C. On the basis of this information,
4. The mass fraction of eutectoid cementite in an iron-carbon alloy is 0.12 at a temperature just below 727C. On the basis of this information, is it possible to determine the composition of the alloy? If so, what is its composition? If this is not possible, explain why. Composition (at% C) 10 15 5 20 25 0 1600 1538C 1493C L 1400 2500 1394C y+L 1200 1147C 2.14 4.30 7. Austenite 2000 Temperature (C) 1000 Temperature (F) 912C y + Fezc 800 1500 La + 7 727C 0.76 600 0.022 a, Ferrite a + Fe3c Cementite (Fe3C) 1000 400 0 (Fe) 2 5 6 6.70 3 4 Composition (wt% C) Note, round all your answers to three decimal places
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