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Unformatted text preview: . In a carburization process of a large steel sample the concentration of carbon at the surface is c s =1.0 wt%. The initial carbon content of the steel is c =0.2wt%. How long it would take to reach a carbon content of 0.6 wt% at a distance of 1 mm from the surface. The diffusion coefficient at the processing temperature is D=2.98x1011 m 2 /s. 4 Name:_________________________ Problem 4 . A cylindrical specimen of a metallic alloy is stressed in tension. The initial specimen diameter is 10 mm and the material parameters are: yield strength σ y =200 MPa, elastic modulus E=90GPa and the shear modulus G=36GPa. a) What is the maximum value of the load that this specimen supports while still in the elastic regime? b) What is the Poisson’s ratio for this alloy? c) What is the final diameter of the specimen if the tensile load is F=12000N ? d) Evaluate the modulus of resilience for this alloy....
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This note was uploaded on 01/22/2012 for the course ME 2733 taught by Professor Meng during the Fall '10 term at LSU.
 Fall '10
 Meng
 Mechanical Engineering

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