Between 230 and 370°C, blue brittleness is caused in mild steel becau

1.	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.
Answer» C. increase in Young's modulus.

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

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