The time-temperature-transformation curve (TTT curve) for steel can best be described by which one of the following:
A) indicates how annealing is used to achieve a given desired microstructure
B) indicates how cooling rate affects the transformation of austenite into various possible phases
C) indicates how martensite is gradually transformed into tempered martensite as a function of time
D) indicates how various phases are obtained during heating as a function of time and temperature
Correct Answer:
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Q1: Which of the following are the usual
Q2: Annealing consists of heating a metal to
Q3: Which of the following are typical reasons
Q4: When annealing is performed to allow for
Q5: The hardness of steel increases with increasing
Q7: Martensite can best be defined as which
Q8: Of the following quenching media, which one
Q9: The treatment in which the brittleness of
Q10: Tempering is a heat treatment applied to
Q11: Hardenability refers to the relative capacity of
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