Mechanical Engineering - Engineering Materials - Discussion

Discussion Forum : Engineering Materials - Section 2 (Q.No. 7)
7.
Which of the following statements are true for annealing of steels?
Steels are heated to 500 to 700° C
Cooling is done slowly and steadily
Internal stresses are relieved
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

Sushil said:   3 years ago
@Jubin,

The temperature at which new grains are formed in the material is known as recrystallization temperature.

SALAHUDDIN said:   3 years ago
Option A is not correct. Only low-temperature annealing or process annealing is done in that temperature range. Rest all are done above 723-degree celsius.

Shiva said:   4 years ago
In Annealing, steel is heated above the recrystallization temperature 30 to 50 degrees. So Option A is wrong.

Jubin said:   5 years ago
What is meant by recrystallization temperature?

Priyanka said:   8 years ago
In annealing process the steel is heated above its recrystallization temperature then the material is cooled slowly in the furnace which results in softening of metal, relieving internal stresses, increases flexibility and reduces hardness.

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