engineering recuitment HPCL Engineer Mock Test 2024 Engineering Materials Science Heat Treatment Process
Identify wrong statement(s) about Heat Treatment.
1
Reduction in strength and hardness occurs after long period of time is called Over-Aging
2
Sudden quenching increases impact strength
3
Annealing is done to elevate plasticity in metals
4
Carburizing is done in low-carbon alloys to increase surface hardness.