Chap 4 metal alloys and heat treatment

Question 1

A family of ferrous alloys composed of at least 90% iron, and 0.008%-2.11% carbon

Answer 1

steel

Question 2

Crystal structure of Austenite

Answer 2

FCC

Question 3

A family of ferrous alloys composed of at least 90% iron, 2.11%-4.5% carbon

Answer 3

cast iron

Question 4

Crystal structure of Martensite

Answer 4

BCT

Question 5

Diagram showing the relationships among temperature, composition, and phases present in a particular alloy system at equilibrium

Answer 5

phase diagram

Question 6

Diagram relevant to heat treating processes that shows the relationships among temperature, time, composition, and phases present in a particular alloy system that is not at equilibrium

Answer 6

time-temperature-transformation

Question 7

A heat treatment process for the restoration of a cold-worked or heat-treated alloy to its original properties

Answer 7

annealing

Question 8

A heat treatment process where the part is quickly cooled in water

Answer 8

quenching

Question 9

A heat treatment process to increases ductility and toughness in which parts are heated to a temperature less than the annealing temperature and then cooled

Answer 9

tempering

Question 10

Hardening of the surface of a part

Answer 10

case hardening