Micrographs : Fe 0.5wt%C (quenched & tempered)
Microstructures | More Metals | Steel | Heat Treated Steel | Medium Carbon (quenched & tempered)
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Medium Carbon (normalised)
Image of Medium Carbon (quenched & tempered)
Fe 0.5wt%C (quenched & tempered)
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High carbon (isothermal transformation)
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This steel has been quenched and then tempered. This has the effect of greatly refining the crystal grain size in the microstructure, which increases the strength and toughness. Strentgth is also increased by fine carbide precipitates.

 
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