Question
An FCC iron-carbon alloy initially containing 0.10 wt% C is carburized at an elevated
temperature and in an atmosphere in which the surface carbon concentration is
maintained at 1.10 wt%. If the treatment is conducted at 1050 °C, how long should the
treatment be performed to reach a 0.30 wt% of carbon concentration at a position 4.2
mm below the surface?

Image Transcription

An FCC iron-carbon alloy initially containing 0.10 wt% C is carburized at an elevated temperature and in an atmosphere in which the surface carbon concentration is maintained at 1.10 wt%. If the treatment is conducted at 1050 °C, how long should the treatment be performed to reach a 0.30 wt% of carbon concentration at a position 4.2 mm below the surface?

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