types of annealing

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Last updated 12:02 AM on 4/17/26
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6 Terms

1
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annealing(general definition)

  1. heat above crystallization temperature

  2. hold temperature for a period of time

  3. let cool down below crystallization temperature slowly

2
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stress relief

reduces stress from

  1. nonuninform cooling

  2. plastic deformation

  3. phase transform

3
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spheroidize

  1. steels

  2. very soft steels for machining

  3. heat and hold under T_eutectoid for 15-25 hours

4
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full anneal

  1. steels

  2. soft steels for forming

  3. heat to get gamma

  4. furnace-cool to get coarse pearlite

5
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normalize

  1. deform steel with large grains

  2. heat treat to recrystallize and form smaller grains

6
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process anneal

to negate the effects of cold working to increase ductility from strain-hardened metal