Figure is a portion of the titanium-copper phase diagram for Figure is a portion of the titanium-copper phase diagram for which only single-phase regions are labeled. Specify all temperature-composition points at which eutectics, eutectoids, peritectics, and congruent phase transformations occur. Also, for each, write the reaction uponcooling.
For a steel alloy it has been determined that a carburizing heat For a steel alloy it has been determined that a carburizing heat treatment of 15 h duration will raise the carbon concentration to 0.35 wt% at a point 2.0 mm from the surface. Estimate the time necessary to achieve the same concentration at […]
For aluminum, the heat capacity at constant volume Cv at+ For aluminum, the heat capacity at constant volume Cv at 30 K is 0.81 J/mol-K, and the Debye temperature is 375 K. Estimate the specific heat (a) At 50 K and (b) At 425 K.
For an 85 wt% Pb-15 wt% Mg alloy, make schematic For an 85 wt% Pb-15 wt% Mg alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 600(C (1110(F), 500(C (930(F), 270(C (520(F), and 200(C (390(F). Label all phases and indicate their approximate compositions.
For an ASTM grain size of 8, approximately how many For an ASTM grain size of 8, approximately how many grains would there be per square inch at (a) A magnification of 100, and (b) Without any magnification?
For a tensile test, it can be demonstrated that necking begins For a tensile test, it can be demonstrated that necking begins when Using Equation 6.19, determine the value of the true strain at this onset of necking.
For alloys of two hypothetical metals A and B, there exist an For alloys of two hypothetical metals A and B, there exist an a, A-rich phase and a Ă, B-rich phase. From the mass fractions of both phases for two different alloys provided in the table below, (which are at the same temperature), determine […]
Is it possible to have an iron-carbon alloy Is it possible to have an iron-carbon alloy for which the mass fractions of total cementite and pearlite are 0.039 and 0.417, respectively? Why or why not?
Briefly explain how reflection losses of transparent materials Briefly explain how reflection losses of transparent materials are minimized by thin surface coatings.
Below are shown three different crystallographic planes for a unit cell of some Below are shown three different crystallographic planes for a unit cell of some hypothetical metal. The circles represent atoms: (a) To what crystal system does the unit cell belong? (b) What would this crystal structure be called? (c) If the density of […]