Engineering: Factors affecting properties of metals

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8 Terms

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Cold Working

Repeated bending/ hammering a metal resulting in a stretched gain

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Work Hardening

Increase in strength and hardness in a metal as a result of cold working

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Annealing

Heat Treatment that makes a metal softer by increasing its grain size

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Normalising

A heat treatment that makes a metal more tough

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Quenching

Rapid cooling of a hot metal by immersing it in a liquid (usually oil or brine)

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Tempering

Heat treatment that reduces brittleness and hardness of a hardened steel

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Hardening

Heat treatment that increases strength and hardness of a metal by rearranging atoms

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Carburising

Heat treatment where carbon is added to the surface of low carbon steel to improve hardness and strength