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Mechanical Properties
Nomenclature and Atomic Structure
Phase Diagrams
Heat Treating and Transformations
Failure and Fracture Mechanics
100

The ratio of stress and strain below the proportional limit.

Young's modulus

100

Diffusion is fastest in this cubic unit cell

body centered cubic (BCC)
100

The transition of a liquid and solid to another solid on cooling

peritectic reaction

100

The hardness attained for a specified cooling rate

Hardenability

100

This test is used to determine the toughness of a material under shock loading

impact testing

200

The point of noticeable plastic deformation

Yield Point

200

These three items are never acceptable in a Miller index for a plane.

infinity signs, fractions, and commas

200

The equilibrium structure that exists at 0.76 wt% C above 727°C. 

austenite

200

The result of rapidly cooling a medium carbon steel to room temperature.

untempered martensite

200

The value of the flattened portion of an S-N curve is called the _____

fatigue limit

300

The calculation to get the toughness of a material 

the area under a stress-strain curve
300

Steels have less of this, cast irons have more.

carbon content

300
The line that bounds the bottom of the liquid phase field.

liquidus

300

This is what you call heating untempered martensite to 1100°F, holding for an hour, and cooling to room temperature.

tempering

300

Moderately ductile metals have this type of fracture surface

cup and cone

400

The material should be ____ in order to accurately estimate strength from Brinell hardness

steel 

400

The general name for iron with carbon and other elements. 

alloyed steels

400
Solder is manufactured at this composition because of its low melting point.

eutectic composition

400

The following are examples of ____:
-precipitation processes which produce submicroscopic particles during low temp heat treating

-increasing carbon content of low-carbon steels

-mechanical deformation below the recrystallization temp

strengthening mechanisms

400

This value is higher than engineering stress at fracture because it takes into account the instantaneous area of the specimen, instead of the original area.

true stress

500

An electric highline cable has one cold-drawn steel wire and six annealed aluminum wires, each 2 mm in diameter. The stiffness of the cable is ________ if the steel and aluminum have elastic modulus values of 205 GPa and 70 GPa, respectively. 

89 GPa

500

This happens to the number of vacancies, and to the diffusion rate, in a crystalline solid when heated.

exponential increase

500
An unknown plain carbon steel is cooled at equilibrium conditions from a fully austenitic structure to 25 wt% pearlite in a matrix of proeutectoid ferrite. 10xx is the type of steel most likely used. 

1020

500

The result of austenitizing a medium carbon steel for an extended period of time, cooling rapidly to 1300°F and holding for 18+ hours. 

spheroidite

500

A steel with a fracture toughness of 125,000 psi*in^1/2 has a yield strength of 150,000 psi and a surface crack that is 0.18 inches deep. This is the type of behavior the material will undergo first as the load is increased from zero (deformation vs fracture). 

deformation