railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Materials Science Heat Treatment Process Annealing
Heat treatment that requires heating a part below A1 temperature, i.e. between 550°C and 650°C for sufficiently long period of time and cooling it very slowly is called as:
1
Hardening
2
Full annealing
3
Process annealing
4
Normalizing