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Both a Ti-15% V alloy and a Ti-35% V alloy are heated to a temperature at which all β just forms. They are then quenched and reheated to 300°C. Describe the changes in microstructure during the heat treatment for each alloy, including the amount of each phase. What is the matrix and what is the precipitate in each case? Which is an age-hardening process? Which is a quench and temper process? [See Figure 14-13(a)].
Figure 14-13(a)
Calculate the diameter of the initial circular blank. Calculate the total effective strain at the top of the cup from rolling, drawing, redrawing, and ironing.
Water enter a cooling tower at 400C and drops 150C of temperature before exit. The tower receives atmospheric air at 200C and 40% relative humidity. The air leaves the tower at 350C and 95% relative humidity. If the atmospheric pressure is 1.01325..
Using your plots, estimate the pressure ratio for maximum net work and the corresponding value of thermal efficiency. Compare the results to those obtained in analyzing the cycle on a cold air-standard basis.
a pump is being used to transfer water from an open tank p1 0 to one having air at 75 psig p2above the water. if 600
Is this a linear problem, mathematically speaking?
What outer sphere diameter is required so that the convection heat transfer from the inner sphere is the same as if it were placed in a large, quiescent environ- ment with air at Too = 20°C?
oil sands abound in several provinces of canada. oil sands contain bitumen trapped in the sandstone. the best oil sand
consider an ideal vapor-compression air conditioner with a cooling capacity of q dotc 4 tons whose evaporator is used
a packed bed is composed of crushed rock with a density of 175 lbmft3nbspof such anbspsize and shape that the average
a long rod is exposed at air at 298oc. it is heated at one end. a steady state condition the temp at 2points along the
The stresses at a point in plane stress on the body of a car were found to be sigma_xx = 30 MPa (C), sigma_yy = 60 MPa (T) and Tau_xy = 40 Mpausing matrix methods a) determine the normal and shear stresses on a plane passing through the point that is..
Calculate the cost per piece of a milling operation that is used to machine a pocket of 2”x3”x0.5” (LxWxD). The material being machined is high silicon aluminium. The tool material is PCD.
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