IME Ch.3

For the copper-nickel phase diagram below, estimate the composition of the liquid phase for a nominal composition of 60% Ni and 40% Cu at 1315°C (2400°F) in terms of percent?

(liquid)= L/Tsolid phase: 75% Ni, 25% Culiquid phase: 45% Ni, 55% Cu1) Total (Sp-Lp (Ni))= 75-45 = 302) Liquid (L-L)= 60-45 = 15(liquid) = L/T = 15/30*10050%!!!!

For the copper-nickel phase diagram below, estimate the composition of the solid phase for a nominal composition of 60% Ni and 40% Cu at 1315°C (2400°F) in terms of percent?

(solid)= S/Tsolid phase: 75% Niliquid phase: 50% Ni1) Total (Sp-Lp (Ni))= 75-50 = 25 tol2) Solid (S-L)= 60-50 = 10(solid) = S/T = 10/25*10040%!!!!

For the copper-nickel phase diagram below, use the inverse lever rule to determine the proportion of the liquid phase present in the alloy in decimal format, where the nominal composition is 60% Ni and 40% Cu at 1315°C (2400°F). The measured values of CL and CS are: CL=9 mm, and CS=13 mm

1) Total (CL+CS)=9+13 = 22(liquid)= (CS)/T =13/22*100=59%!!!!

For the copper-nickel phase diagram below, use the inverse lever rule to determine the proportion of the solid phase present in the alloy in decimal format, where the nominal composition is 60% Ni and 40% Cu at 1315°C (2400°F). The measured values of CL and CS are: CL=9 mm, and CS=13 mm.

1) Total (CL+CS)=9+13 = 22(solid)= (CL)/T =9/22*100=40.9%!!!!

from which of the following ores is aluminum derived?

bauxite

which one of the following elements is the most important alloying ingredient in steel?

carbon

traditional bronze is an alloy of which of the following metallic elements?

copper and tin

traditional brass is an alloy of which of the following metallic elements?

copper and zinc

currently, the two most important processes in steel making are which of the following?

electric arc furnace, basic oxygen furnace

the principal ore used in the production of iron and steel is which one of the following?

hematite

Which of the following properties or characteristics do not apply to metals? (2)

ionic bonding, high electrical resistivity

the iron tapped from the blast furnace is which one of the following?

pig iron

which of the following is the source of most commercially produced magnesium?

seawater

The inverse lever rule is used to determine which one of the following in a binary phase diagram?

the proportions of each phase present at a given temperature

which one of the following metals has the lowest melting point?

tin

The strength and hardness of steel increases as carbon content

true

galvanized steel is steel that has been coated with which one of the following metals?

zinc