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What does CCT diagram stand for?

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in Engineering Material & Metallurgy by (773k points)
What does CCT diagram stand for?

(a) Constant-critical-temperature

(b) Constant-cooling-temperature

(c) Continuous-cooling-transformation

(d) Continuous-creep-transformation

This question was addressed to me in final exam.

My doubt is from Transformation Diagrams topic in chapter Heat Treatment of Engineering Material & Metallurgy

1 Answer

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Best answer
Right answer is (c) Continuous-cooling-transformation

To explain I would say: Martensite and bainite are non-equilibrium phases which cannot be depicted on a Fe-Fe3C equilibrium diagram. In such cases, either the time-temperature-transformation or the continuous-cooling-transformation diagrams can be used.

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