IME: Chapter 6- Quiz 4

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.

50%

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.

79%

The strength and hardness of steel increases as carbon content increases.

True

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

basic oxygen furnace electric arc furnace

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

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

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

zinc

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 (two correct answers)?

high electrical resistivity ionic bonding

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

pig iron

Which one of the following is the source of most commercially produced magnesium?

sea water