Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 5.7, Problem 21AAP
To determine
What depth in millimeters will the carbon content be.
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Decarburization of a steel occurs when carbon diffuses from the steel to the surface and enters the atmosphere. How long will it take for a 0.6 % C steel surface to decarburize below 0.1 % C for a depth of 2 mm if the FCC steel is held at 1250 °C in an atmosphere containing zero carbon? I need this question's answer. It's important for me.
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Chapter 5 Solutions
Foundations of Materials Science and Engineering
Ch. 5.7 - Prob. 1KCPCh. 5.7 - Write an equation for the number of vacancies...Ch. 5.7 - Prob. 3KCPCh. 5.7 - Prob. 4KCPCh. 5.7 - Describe the substitutional and interstitial...Ch. 5.7 - Prob. 6KCPCh. 5.7 - What factors affect the diffusion rate in solid...Ch. 5.7 - Write the equation for Ficks second law of...Ch. 5.7 - Prob. 9KCPCh. 5.7 - Prob. 10KCP
Ch. 5.7 - (a) Calculate the equilibrium concentration of...Ch. 5.7 - Prob. 12AAPCh. 5.7 - Determine the diffusion flux of zinc atoms in a...Ch. 5.7 - The diffusion flux of copper solute atoms in...Ch. 5.7 - Prob. 15AAPCh. 5.7 - Prob. 16AAPCh. 5.7 - Prob. 17AAPCh. 5.7 - A gear made of 1020 steel (0.20 wt% C) is to be...Ch. 5.7 - Prob. 19AAPCh. 5.7 - The surface of a steel gear made of 1020 steel...Ch. 5.7 - Prob. 21AAPCh. 5.7 - If boron is diffused into a thick slice of silicon...Ch. 5.7 - Prob. 23AAPCh. 5.7 - Prob. 24AAPCh. 5.7 - Prob. 25AAPCh. 5.7 - Prob. 26AAPCh. 5.7 - Prob. 27AAPCh. 5.7 - Prob. 28AAPCh. 5.7 - Prob. 29AAPCh. 5.7 - Prob. 30AAPCh. 5.7 - The diffusivity of copper atoms in the aluminum...Ch. 5.7 - Prob. 32AAPCh. 5.7 - Prob. 33SEPCh. 5.7 - Prob. 34SEPCh. 5.7 - Prob. 37SEPCh. 5.7 - Prob. 38SEPCh. 5.7 - The activation energy of nickel atoms in FCC iron...Ch. 5.7 - Prob. 40SEPCh. 5.7 - The self-diffusion of iron atoms in BCC iron is...Ch. 5.7 - Would you expect the diffusion rate of copper...Ch. 5.7 - Would you expect the diffusion rate of copper...Ch. 5.7 - Prob. 44SEPCh. 5.7 - Prob. 45SEPCh. 5.7 - Prob. 46SEPCh. 5.7 - Prob. 47SEPCh. 5.7 - Prob. 48SEPCh. 5.7 - Prob. 49SEPCh. 5.7 - Prob. 50SEP
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- 1. You have ice at 263 K (-10.0 °C) and 1.0 atm. Whatvcould you do to make the ice sublime? 2. A sample of dry ice (solid CO2) is cooled to 173 K (-100.0 °C), and is set on a table at room temperature (298 K; 25 °C). At what temperature is the rate of sublimation and deposition the same (assume that pressure is held constant at 1 atm)?arrow_forwardCalculate w and ΔE when 1 mole of a liquid is vaporized at its boiling point (80.°C) and 1.00 atm pressure. ΔH for the vaporization of the liquid is 30.7 kJ/mol at 80.°C. Assume the volume of 1 mole of liquid is negligible as compared to the volume of 1 mole of gas at 80.°C and 1.00 atm.arrow_forwardFor a steel alloy it has been determined that a carburizing heat treatment of 11.3 h duration will raise the carbon concentration to 0.34 wt% at a point 1.0 mm from the surface. Estimate the time necessary to achieve the same concentration at a 5.0 mm position for an identical steel and at the same carburizing temperature. t = ______ harrow_forward
- Which best explains why the trend in noble gas boiling points increases down the group (larger in size)? A. Increasing dipole-dipole interactions B. Increasing dispersion interactions C. Increasing ion-ion interactions D. Increasing hydrogen bonding interactionsarrow_forwardwhy diffusion coefficients of carbon in BCC and FCC in iron at temperature 912 c are difference? explain ?arrow_forwardA flat plug 30 mm thick having an area of 6×10-3 m2 is used to close an opening in a container. The gas O2 at 25 oC and 2 atm pressure is stored inside the container. Assume that the outside partial pressure of O2 is zero and the solubility of O2 is 0.9 m3 gas (at 0 oC and 1 atm) per m3 solid per atm pressure of O2 , and the diffusivity of O2 in the solid material is equal to 0.11×10-10 m2/s. i- Calculate the total leakage of O2 through the plug to the outside in kgmol/s at a steady state. ii- Using the information given in the Appendix (Table Q1), determine the most appropriate material to be used for constructing the plug; and state why?.arrow_forward
- 1. An FCC iron-carbon alloy initially containing 0.20 wt% C is carburized at an elevated temperature and in an atmosphere that gives a surface carbon concentration constant at 1.0 wt%. If after 49.5 h, the concentration of carbon is 0.35 wt% at a position 4.0 mm below the surface, determine the temperature at which the treatment was carried out. 2. Consider a metal single-crystal oriented such that the normal to the slip plane and the slip direction are at angles of 60° and 35°, respectively, with the tensile axis. If the critical resolved shear stress is 20.7 MPa, will an applied stress of 45 MPa cause the single crystal to yield? If not, what stress will be necessary?arrow_forward(a ) Rhodium has an atomic radius of 0.1345 nm and a density of 12.41 g/cm^3 . Determine whether it has an FCC or BCC crystal structure. (Note: It has an atomic weight of 102.91 g/mol.) (b) If aluminum diffused into a thick slice of silicon with no previous aluminum in it at the temperature of 1100 degrees celcius for 6 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm^3 if the surface concentration is 1018 atoms/cm^3 . D=2x10^(-12) cm^2 /s for Al diffusing in Si at 1100 degrees celcius.arrow_forwardDetermine the Miller indices for Plane A and Plane B as shownarrow_forward
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