- Created by: xprinnyx
- Created on: 27-02-19 21:37
A L L O Y S
- An alloy is a mixture of two or more elements where at least one element is metal.
- converting pure metals into alloys often increases the strength of the product. eg. brass in an alloy of copper and zinc which is stronger than copper or zinc alone.
EXPLAINING ALLOY STRENGTH
- Solid metals have a regular lattice structure which means when a force is applied to a metal, layers of atoms can move past each other. The more difficult it is for the layers to move, the more force is needed and the stronger the metal.
- Copper and zinc atoms are of different sizes. This distorts the regular lattice structure in brass, so layers of atoms cannot slide over each other so easily which makes brass stronger than copper or zinc alone.
USES OF ALLOYS
- Iron is alloyed with other metals to produce a range of alloy steels. Steels have different properties, depending on their composition. for example:
- mild steel is. useful for making car body parts because it is easily pressed into shape.
- tool steel is useful for making drill bits because it is hard and not easily damaged by the heating caused by friction during drilling.
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