Mechanical Engineering - Engineering Materials - Discussion
Discussion Forum : Engineering Materials - Section 1 (Q.No. 19)
19.
When the steel is normalised, its
Discussion:
15 comments Page 2 of 2.
Sai saketh said:
8 years ago
In the normalising process, the material is heated above critical point temperature and allowed to cool in air. The answer is D only.
Vinay choudhary said:
7 years ago
Answer. D.
Normalizing is carried in still air, rate of cooling is more, it form fine pearlite with small uniform grain. So, it results in higher strength, hardness and low in ductility.
Normalizing is carried in still air, rate of cooling is more, it form fine pearlite with small uniform grain. So, it results in higher strength, hardness and low in ductility.
Salahuddin said:
5 years ago
Reduced ductility means it is comparatively. Compared to annealing, ductility is less.
Vinay BEL said:
5 years ago
Ultimate tensile strength increases should be the right option.
David Ayotunde said:
2 years ago
Normalizing involves heating the steel to an elevated temperature, followed by slow cooling to room temperature. The heating and slow cooling changes the microstructure of the steel. This reduces the hardness of the steel and will increase its ductility.
(3)
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