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Question: a 1020 steel bearing an fec alloy where c02wt is...

Question details

A 1020 steel bearing (an Fe-C alloy where [C]=0.2wt%) is carburized at 927oC.

After 4 hours of carburization, what is the carbon content 0.9 mm below the surface

if the surface concentration is found to be 1.0wt%? Assume D for C in 1020 at this

temperature is equal to 1.28x10-11 m2/s

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