GATE MT · 2017 · MT
Question 49: Principles of heat treatment of steels, TTT and CT diagrams; Surface hardening treatments; Recovery, recrystallization and grain growth; Heat treatment of cast iron and aluminium alloys.
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Question 49
MTNAT2 marksNeeds review
During heat treatment of a cold worked metal, recrystallization is 20% complete after 100 s. The transformation (in %) in 400 s is ________ (answer up to two decimal places)
(Assume Avrami exponent, n = 2)
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2017MT
GATE MT 2017 · Paper 1
Metallurgical Engineering · Original paper archive
- Section
- Metallurgical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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Principles of heat treatment of steels, TTT and CT diagrams; Surface hardening treatments; Recovery, recrystallization and grain growth; Heat treatment of cast iron and aluminium alloys.
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