Heat Treatment of Metals

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  • Created by: Sophie :)
  • Created on: 26-05-13 15:56

Annealing

Process;

metal is heated then allowed to cool SLOWLY

Effect;

metal becomes softer, more ductile and less brittle

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Hardening

Process;

metal is heated and then cooled RAPIDLY by plunging into cold water or oil

Effect;

metal becomes harder but more brittle

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Tempering

Process (for steel);

cleaned and then gently heated, causing it to change colour

Effect;

the different colours show how tough the metal is becoming.

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