The Fe-C phase diagram is one of the most important in Mechanical Engineering because it allows us to understand the structure of steels and cast i...

The Fe-C phase diagram is one of the most important in Mechanical Engineering because it allows us to understand the structure of steels and cast irons and the transformations that these alloys undergo when subjected to heat treatments. About the Fe-C diagram, choose the CORRECT alternative.


A) It is a Binary diagram, as it presents two variables: temperature (x-axis) and solubility limit (y-axis).
B) It is a Ternary diagram, as it presents three variables: temperature (x-axis), solubility limit (y-axis), and concentration (z-axis).
C) It is a Binary diagram, as it presents the formation of an alloy consisting of two elements: iron and carbon.
D) It is a Binary diagram, as it presents two variables: concentration (x-axis) and temperature (y-axis).
E) It is a Ternary diagram, as it presents three variables: concentration (x-axis), temperature (y-axis), and cooling rate (z-axis).