
#1
Sep2108, 09:55 PM

P: 16

1. The problem statement, all variables and given/known data
For a steel alloy below, it has been determined that a carburizing heat treatment of 15 hr duration will raise the carbon concentration to 0.35% at a point 2.0 mm from the surface. Estimate the time necessary to achieve the same concentration at a point 6.0 mm position for an identical steel and at the same carburizing temperature. 2. Relevant equations 3. The attempt at a solution Because the %Concentration and Temperature are the same, their should be a linear relationship between time and depth but I cannot think of a way to determine the Diffusion Coefficient or an equation for the relationship. Looking for a gentle shove in the right direction. Thanks so much 


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