Explain briefly the followings for an Al−4 wt. %Cu alloy. (1) Regarding age hardening of an Al-Cu alloy, give the name a
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Explain briefly the followings for an Al−4 wt. %Cu alloy. (1) Regarding age hardening of an Al-Cu alloy, give the name a
Explain briefly the followings for an Al−4 wt. %Cu alloy. (1) Regarding age hardening of an Al-Cu alloy, give the name and describe the special microstructural condition (including the number of phases) immediately after quenching and prior to aging. (5 pts) (2) Aging time is critical for improving mechanical properties, especially strength and hardness. Explain artificial aging and natural aging. (5 pts) Artificial aging: Natural aging:
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