Between 230 and 370°C, blue brittleness is caused in mild steel because of the (A) Immobility of dislocation (B) Strain-ageing (C) Increase in Young's modulus (D) Strain hardening

Between 230 and 370°C, blue brittleness is caused in mild steel because
of the
(A) Immobility of dislocation
(B) Strain-ageing
(C) Increase in Young's modulus
(D) Strain hardening
by

1 Answer

Answer :

Option B
by

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