Fe-C Flashcards
1
Q
c-axis _____ and a-axis _____
A
contracts; expands
2
Q
What happens to the tetragonal BCT unit cell if carbon is removed?
A
it becomes a BCC unit cell
3
Q
Formation of BCT unit cell is ______; doesn’t require movement of interstitial C
A
diffusionless
4
Q
Why is the expansion of the species isotropic?
A
martensite crystals are randomly oriented
5
Q
During cooling, there is ____ due to thermal effects and ____ due to martensite transformation
A
contraction; expansion
6
Q
Higher CC ratio, ______ c/a ratio and tetragonality
A
higher
