a) What is the analogy of non-steady state diffusion of carburization and of decarburization in heat...

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a) What is the analogy of non-steady state diffusion of carburization and of decarburization in heat transport? b) Calculate the time necessary to obtain an 60 R, hardness effective case depth of 800 m in a Fe-0.1% C alloy carburized at 950C in a furnace that provides a surface carbon concentration of 0.8 %C. c) Sketch the carburization profile at t=0 and t=2 hrs and after calculation show the depth of the surface layer below 60 Rc. Dc= 0.12 exp(-32000/RT) Martensite hardness, Rc-20+54(%C)1/2 Diffusion coefficient unit is cm/s R= 1.987 cal/mol.K Rockwell C Hardness vs Carbon Content Martensite Phase Rc 60 50 40 30 0 0.4 0.8 1.2 1.6 % C 1.8 a) What is the analogy of non-steady state diffusion of carburization and of decarburization in heat transport? b) Calculate the time necessary to obtain an 60 R, hardness effective case depth of 800 m in a Fe-0.1% C alloy carburized at 950C in a furnace that provides a surface carbon concentration of 0.8 %C. c) Sketch the carburization profile at t=0 and t=2 hrs and after calculation show the depth of the surface layer below 60 Rc. Dc= 0.12 exp(-32000/RT) Martensite hardness, Rc-20+54(%C)1/2 Diffusion coefficient unit is cm/s R= 1.987 cal/mol.K Rockwell C Hardness vs Carbon Content Martensite Phase Rc 60 50 40 30 0 0.4 0.8 1.2 1.6 % C 1.8

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Solutions Step 1 Question a Explanation The analogy of nonsteady state diffusion of carburization and decarburization in heat transport is that both p... View the full answer