Engineering Materials
Addition of copper to aluminium results in

Improvement of casting characteristics
One of the best known age and precipitation hardening systems
Improvement of corrosion resistance
Improving machinability

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Engineering Materials
Recrystallization temperature is one

At which crystals grow bigger in size
At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated
At which crystals first start forming from molten metal when it is cooled
At which change of allotropic form takes place

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