102) Which of the following constituents of steels is softest and least strong
Answer is:
ferrite
Related Engineering Materials MCQ with Answers
Answer is:
alpha iron, gamma iron and delta iron
Explanation:
Alpha iron, gamma iron and delta iron represents the allotropic forms of iron.
Answer is:
face-centred cubic lattice
Answer is:
770°C
Explanation:
Below 773 °C (1,423 °F), alpha iron becomes ferromagnetic (i.e., capable of being permanently magnetized), indicating a change in electronic structure but no change in crystal structure.