Between 230 and 370°C, blue brittleness is caused in mild steel because of the Options: A . &nbspImmobility of dislocation B . &nbspStrain-ageing C . &nbspIncrease in Young's modulus D . &nbspStrain hardening

Between 230 and 370°C, blue brittleness is caused in mild steel because of the

Question

Between 230 and 370°C, blue brittleness is caused in mild steel because of the

Options:

A . Immobility of dislocation

B . Strain-ageing

C . Increase in Young's modulus

D . Strain hardening

Answer: Option B

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