119) When a medium carbon steel is heated to coarsening temperature
Answer is:
the grain size increases very rapidly
Related Engineering Materials MCQ with Answers
Answer is:
there is no change in grain size
Explanation:
When low carbon steel is heated up to lower critical temperature There is no change in grain size
Answer is:
different crystal structures at different temperatures
Explanation:
allotropy is the existence of two or more crystalline or molecular structural forms of an element that have different chemical or physical attributes.
Answer is:
is more ductile and has a less tendency to distort during heat treatment
Answer is:
is less tough and has a greater tendency to distort during heat treatment
Explanation:
A coarse grained steel is less tough and has a greater tendency to distort during heat treatment