Question:-
Consider the following pairs:
Heat treatment Effects on medium carbon steel
1. Normalizing Grain refinement
2. Full annealing Uniform grain structure
3. Mar tempering Decreased ductility
4. Spheroldizing Maximum softness

Which of the pairs given above are correctly matched?
Option (A)
1 and 2
Option (B)
2 and 3
Option(C)
3 and 4
Option(D)
1, 2, 3 and 4
Correct Option:
(D)
Question Solution:
Mar tempering forms martensite in the structure so ductility reduced
question-answer-faq-6661