Fe-C Flashcards

1
Q

c-axis _____ and a-axis _____

A

contracts; expands

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2
Q

What happens to the tetragonal BCT unit cell if carbon is removed?

A

it becomes a BCC unit cell

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3
Q

Formation of BCT unit cell is ______; doesn’t require movement of interstitial C

A

diffusionless

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4
Q

Why is the expansion of the species isotropic?

A

martensite crystals are randomly oriented

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5
Q

During cooling, there is ____ due to thermal effects and ____ due to martensite transformation

A

contraction; expansion

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6
Q

Higher CC ratio, ______ c/a ratio and tetragonality

A

higher

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