Ductile–Brittle Transition ·
Charpy V-notch, BCC steel
un
seel
.com · σ_y rises on cooling · σ_f stays flat
Temp
+20 °C
Charpy
180 J
Regime
—
Cold / brittle (cleavage)
σ_y yield stress (rising)
Warm / ductile (shear tear)
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seel
.com · Ductile-to-Brittle Transition Temperature (DBTT) in Steel