Heat treatment can be defined as
A) heating the metal in a solid state and then cooling it in a different manner
B) heating the metal to melting point nad then cool to room temperature
C) both a and b
D) none of the above
Correct Answer:
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Q11: transformation of austenite to bainite starts from
Q12: Bainite phase is divided into two types-------and--------
A)upper
Q13: Martensite phase is obtain by
A)fast cooling or
Q14: The isothermal transformation diagram i.e. TTT diagrams
Q15: In the heat treatment cycle CCT means-------
A)coolest
Q17: One of the main purpose of heat
Q18: one of the following is heat treatment
Q19: one of the following is a purpose
Q20: In anneling process the metal from high
Q21: one of the following cooling rate used
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