Heat Treatments Flashcards

1
Q

Normalising

A
  • Heating to above upper critical point
  • Cool in air
  • Removes stresses
  • Tough & Ductile
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2
Q

Annealing

A
  • Heating to suitable temperature for long time
  • Soften work hardened metals
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3
Q

Hardening

A
  • Heated above lower critical point
  • Increases hardness and strength
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4
Q

Quenching

A

Quickly cooling a hot metal with liquid

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