Multiple Choice
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:
Verified
Correct Answer:
Verified
Q4: The treatment in which the brittleness of
Q5: Which of the following are typical reasons
Q6: Tempering is a heat treatment applied to
Q7: In precipitation hardening, the hardening and strengthening
Q8: The most common method for measuring hardenability
Q9: Annealing consists of heating a metal to
Q10: Which of the following are the usual
Q11: The hardness of steel increases with increasing
Q12: Hardenability refers to the relative capacity of
Q13: Of the following quenching media, which one