Multiple choice general knowledge

Materials after cold working are subjected to following process to relieve stress

  1. Hot working

  2. Normalising

  3. Annealing

  4. Tempering
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cold working introduces internal stresses and work hardening in materials due to plastic deformation. Annealing relieves these stresses by heating the metal above its recrystallization temperature and allowing controlled cooling, which enables new stress-free grains to form. This process restores ductility and reduces hardness. Hot working is a deformation process, not a stress-relief treatment, while normalising and temperpering serve different purposes.

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