Engineering, 26.07.2019 17:20 cam6836
An fcc iron-carbon alloy initially containing 0.55 wt% c is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 k (1052 c). under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% c. mis process of carbon depletion is termed decarburization.) at what position will the carborn concentration be 025 wt% after a 10-hours treatment? the value of d at 1325 k is 3.3x 10^-11 m^2/s. (you may need to use some properties of error function attached)
Answers: 1
Engineering, 03.07.2019 14:10
Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.
Answers: 1
Engineering, 03.07.2019 14:10
When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point
Answers: 3
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
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Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
An fcc iron-carbon alloy initially containing 0.55 wt% c is exposed to an oxygen-rich and virtually...
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