Explain the differences in grain structure for a metal that Explain the differences in grain structure for a metal that has been cold worked and one that has been cold worked and then recrystallized.
Estimate the energy required to raise the temperature of 2 Estimate the energy required to raise the temperature of 2 kg (4.42lbm) of the following materials from 20 to 100°C (68 to 212°F): aluminum, steel, soda–lime glass, and high-density polyethylene.
Estimate the electrical conductivity, at 85°C, of silicon that Estimate the electrical conductivity, at 85°C, of silicon that has been doped with 1020 mâ3 of phosphorus atoms.
Estimate the Brinell hardnesses for specimens of a 0.45 wt% Estimate the Brinell hardnesses for specimens of a 0.45 wt% C iron-carbon alloy that have been subjected to the heat treatments described in parts (a), (d), and (h) of Problem 10.20. (a) Rapidly cool to 250(C (480(F) hold for 103 s, then quench to room […]
Estimate the Brinell and Rockwell hardnesses for the following: Estimate the Brinell and Rockwell hardnesses for the following: (a) The naval brass for which the stressâstrain behavior is shown in Figure 6.12. (b) The steel alloy for which the stressâstrain behavior is shown in Figure6.21.
Estimate (a) The saturation magnetization, and (b) The saturat Estimate (a) The saturation magnetization, and (b) The saturation flux density of nickel ferrite [(NiFe2O4)8], which has a unit cell edge length of 0.8337 nm.
Determine whether or not it is possible to cold work Determine whether or not it is possible to cold work steel so as to give a minimum Brinell hardness of 225, and at the same time have a ductility of at least 12%EL. Justify your decision.
For an alloy of composition 74 wt% Zn-26 wt% Cu, For an alloy of composition 74 wt% Zn-26 wt% Cu, cite the phases present and their compositions at the following temperatures: 850(C, 750(C, 680(C, 600(C, and 500(C.
Distinguish between materials that are opaque, translucent Distinguish between materials that are opaque, translucent, and transparent in terms of their appearance and light transmittance.
Discuss whether it would be advisable to hot work or Discuss whether it would be advisable to hot work or cold work the following metals and alloys on the basis of melting temperature, oxidation resistance, yield strength, and degree of brittleness: tin, tungsten, aluminum alloys, magnesium alloys, and a 4140 steel.