Question

Compound formed during precipitation hardening of Al-Cu alloys is

• A. CuAl
• B. CuAl₂
• C. Cu₂Al₃
• D. Cu₃Al₂

Hint:

Precipitation hardening enhances the strength of alloys, and CuAl₂ is a key phase in Al-Cu alloys that significantly increases their strength.

Answer 1

The Correct Option is B

CuAl₂ is the intermetallic compound formed during the precipitation hardening of Al-Cu alloys, which strengthens the material by preventing dislocation movement.