Mechanical and Chemical Properties of Metals

Question 1

The capacity of a material to withstand some applied load

Answer 1

Strength

Question 2

The ability of a metal to resist failure when subjected to a pulling load

Answer 2

Tensile Strength

Question 3

Another name for Tensile Strength

Answer 3

Ultimate Tensile Strength

Question 4

The point at which a metal no longer behaves elastically and is not able to return back to its original state

Answer 4

Yield Point

Question 5

As temperature increases > Ductility __________

Answer 5

Increases

Question 6

As temperature increases > Strength __________

Answer 6

Decreases

Question 7

If a metal exhibits high ductility, it will fail or break _____________

Answer 7

Gradually

(The load is not concentrated in one small area but distributed throughout the piece)

Question 8

______ and ______ of a rolled meatl is greatest in the direction of rolling

Answer 8

Strength and Ductility

Question 9

Percent elongation and percent reduction of area are ways to measure ______

Answer 9

Ductility

Question 10

Percent Elongation is found by

Answer 10

Divided length of stretched piece by length of original piece and multiplying by 100

Question 11

The ability of a material to resist indentation

Answer 11

Hardness

Question 12

Hardness and Strength are directly related

True or False

Answer 12

True

Question 13

The ability of a material to absorb energy

Answer 13

Toughness

Question 14

A low toughness value defines _______ (Ductility) behavior

Answer 14

Brittle Behavior

Question 15

While performing notch toughness of a metal, we are usually trying to determine the temprature at which the fracture behavior changes from ductile to brittle. This temperature is referred to as the ____________.

Answer 15

Transition temperature

Question 16

The strength necessary to resist failure under repeated load applications as a cyclic, or repeating, mechanical action of a member

Answer 16

Fatigue Strength

Question 17

______ strength and ________ strength are very dependent upon the surface condition

Answer 17

Fatigue Strength and Impact Strength

Question 18

What type of Crystal structure is shown below?

Answer 18

Hexagonal Close-packed

HCP

Question 19

What type of Crystal structure is shown below?

Answer 19

Face-centered Cubic

FCC

Question 20

What type of Crystal structure is shown below?

Answer 20

Body-centered Cubic

BCC

Question 21

Iron, Carbon steels, Chromium, Molybdenum, and Tungsten

Answer 21

Types of BBC Metals

Question 22

Crystal structure with an atom at each of the 8 corners with a single atom at the center of the cell

Answer 22

Body-closed Cubic

BCC

Question 23

Crystal structure with an atom at each of the 8 corners with an atom at each of the 6 surfaces

Answer 23

Face-centered Cubic

FCC

Question 24

Crystal structure with two hexagons at the top and bottom forming a prism, an atom at the corners and center of prism, and 3 atoms at the corners of the triangle in the center

Answer 24

Hexagonal-close Packed

HCP

Question 25

Aluminum, Copper, Nickel, and Austenitic Stainless Steels

Answer 25

Types of FCC Metals

Question 26

Non-magnetic stainless steels that contain high levels of chromiumand nickel and low levels of carbon. Known for their formability and resistance

Answer 26

Austenitic Stainless Steel

Question 27

Titanium, Zinc, Cadmium, Beryllium, and Magnesium

Answer 27

Types of HCP

Question 28

Carbon Content of

Low Carbon Steel

Medium Carbon Steel

High Carbon Steel

Cast Iron

Answer 28

Low Carbon Steel - < .3%

Medium Carbon Steel - Between .3% - .55%

High Carbon Steel - > .55% - .8%

Cast Iron - 1.8% - 4%

Question 29

What characteristics does nickel give to steel?

Answer 29

Increases Strength, Ductility, and Toughness