Use the following FeFe3C phase diagram to answer questions 6

Use the following Fe-Fe3C phase diagram to answer questions 6-10 Steel containing 0.5% C is classified as Hypoeutectic Hypereutectic Hypoeutectoid Hypereutecoid Maximum solubility of Carbon in alpha-ferrite is .0.77%C 2.11%C 0.0218% C 2.11%C What phases) are present at 728 degree C for AISI steel 1040 (0.40%C) alpha-ferrite y-austenite both alpha-ferrite and y-austenite None of the above Amount of a-ferrite in question is 50.5% 49.5% 0.0218% 0.77% Eutectoid reaction in this phase diagram takes place at 4.3% C 2.11%C 0.77%C None of the above

Solution

6.a

7.c

8.a

9.c

10.a