Question

what is the melting temperature of pure fe? at what temperature does pure gamma iron transforms to pure alpha iron? what is the approximate liquidus temperature of an iron-carbon alloy containing 2.11 wt% carbon?

Answer 1

Pure iron melts at 1538°C, and pure gamma iron transforms to pure alpha iron at 912°C. An iron-carbon alloy with 2.11 wt% carbon has a liquidus temperature of approximately 1153°C.

Step-by-step explanation:

The melting temperature of pure iron (Fe) is 1538°C, which is when it transitions from solid to liquid form. The temperature at which pure gamma iron (γ-iron) transforms into pure alpha iron (α-iron) is 912°C. This is known as the A2 point or the Curie point, where ferromagnetic iron converts to paramagnetic iron due to changes in its crystal structure. The liquidus temperature of an iron-carbon alloy containing 2.11 wt% carbon is approximately 1153°C. This temperature indicates the point at which the alloy becomes completely liquid during heating.