Engineering Materials
Aluminium bronze contains

10% aluminium and 90% copper
90% magnesium and 9% aluminium with some copper
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg

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Engineering Materials
Recrystallization temperature is one

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
At which crystals grow bigger in size

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Engineering Materials
Amorphous material is one

Which emits fumes on melting
Which is not attacked by phosphorous
In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
In which atoms align themselves in a geometric pattern upon solidification

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