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CHAPTER 7 - Coggle Diagram
CHAPTER 7
Heat treatment
annealing
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increase ductility, toughness softness
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soft the steel, good machinability
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quenching
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used brine, water, oil, air
produce martensite - fast cooling, increase hardenability
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martensite - ferrite supersaturated with C, BCT structure, high strength, low ductility,
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spheroidising
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soft the materials, good machinability
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