Consider the following statements regarding hot and cold working:
1. Cold working may be defined as plastic deformation of metals and alloys at a temperature above the recrystallization temperature for that metal or alloy.
2. Hot working may be explained as plastic deformation of metals and alloys at such a temperature at which recovery and recrystallization take place simultaneously with the strain hardening.
3. Recrystallization temperature is not a fixed temperature but is actually a temperature range.
Which of the above statements are correct?

Question

Examsnet · Accepted Answer

Correct Answer is : 2 and 3 only

UPSC ESE 2025 Mechanical Engineering Paper