Martensitic Transformation ·
A Crystal Shears at the Speed of Sound
un
seel
.com · quench past Ms · the lattice changes shape, not composition · no atom swaps places
Grain
820 °C
Front
0 m/s
c/a
1.000
Phase
AUSTENITE · FCC
Austenite — hot FCC iron
Transformation front & twins
Martensite plate — BCT
Polished face & ruled scratch
(relief ×4)
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.com · Martensitic Transformation