Question

Which of the following statements are correct regarding the austenite phase in an iron-carbon phase diagram?

(a) It is non-magnetic in nature

(b) The maximum percentage of carbon is 2.1%

(c) It has a face-centered cubic structure

(d) The austenitic phase has a face-centered cubic structure with a 2.1% maximum percent carbon and non-magnetic in nature.

This question was posed to me during a job interview.

This interesting question is from Materials in chapter Materials of Corrosion Engineering

Answer 1

Correct option is (d) The austenitic phase has a face-centered cubic structure with a 2.1% maximum percent carbon and non-magnetic in nature.

The best I can explain: Austenite is one of the phases in the iron-carbon phase diagram. It has a face-centered cubic structure with 2.1% maximum percent carbon and it is non-magnetic in nature.