MMET 207 FINAL EXAM - TAMU – Craig
Questions With Correct Answers
Types of Hardness Testing (3) - CORRECT ANSWER✔✔-Rockwell, Brinell,
| | | | | | | | |
Vickers or Knoop
| |
Can FCC or BCC hold more carbon? - CORRECT ANSWER✔✔-FCC
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Are Hardness Rockwell B (HRB) and Hardness Brinell (HB) the same or
| | | | | | | | | | | |
different tests? - CORRECT ANSWER✔✔-Different
| | | |
(more/less)
___ grains = ____ ductility = ____ slip - CORRECT ANSWER✔✔-smaller
| | | | | | | | | | |
grains = more ductility = more slip
| | | | | | |
vice versa
|
(higher/lower)
___ temp --> ___ grain size - CORRECT ANSWER✔✔-higher temp -->
| | | | | | | | | | |
larger grins size
| |
(higher/lower)
,___ MoE --> ___ deflection - CORRECT ANSWER✔✔-higher MoE = less
| | | | | | | | | | |
deflection (droop) |
MoE of: (all x 10^6)
| | | |
Carbon Steel |
Titanium
Aluminum
Plastics - CORRECT ANSWER✔✔-Carbon Steel: 30
| | | | |
Titanium: 20 |
Aluminum: 10 |
Plastics: .5 |
What is the microstructure of the Delta Iron Triangle? - CORRECT
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ANSWER✔✔-BCC
Is grain size a determining factor in if a material is BCC/FCC or
| | | | | | | | | | | | |
Austenite/Ferrite/Pearlite? - CORRECT ANSWER✔✔-No, you can have | | | | | | |
any grain size of the same material
| | | | | |
What motion is used for wear testing? - CORRECT ANSWER✔✔-Rubbing
| | | | | | | | |
,What heat treatments soften a material? - CORRECT ANSWER✔✔-
| | | | | | | |
Tempering, annealing, stress relieving, and normalizing
| | | | |
Rockwell Hardness Testing (process) - CORRECT ANSWER✔✔-Apply
| | | | | | |
minor load, apply major load, remove loads, calculate the difference of
| | | | | | | | | | |
the indentions
|
Rockwell Hardness Testing (Indentors) - CORRECT ANSWER✔✔-1/16"
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Tungsten Carbide Ball for B&T
| | | |
120 degree Diamond Cone or Brale for C, A, & N (EX: HRC)
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Rockwell Regular loads - CORRECT ANSWER✔✔-Minor: 10 kg
| | | | | | |
Major: 60kg, 100kg, 150kg
| | |
Rockwell Superficial loads - CORRECT ANSWER✔✔-Minor: 3kg
| | | | | |
Major: 15kg, 30 kg, 45kg
| | | |
What does a major load mean? - CORRECT ANSWER✔✔-Load that
| | | | | | | | | |
makes the second indention
| | |
Differences between regular and superficial loads - CORRECT
| | | | | | | |
ANSWER✔✔-regular - prefer to use this | | | | |
superficial - use if material is really thin or soft
| | | | | | | | |
, Rockwell: difference between Beuler and Wilson? - CORRECT
| | | | | | | |
ANSWER✔✔-They are just different brands, same type of rockwell
| | | | | | | | |
hardness test |
Brinell Hardness Test - CORRECT ANSWER✔✔-Uses 10mm ball as
| | | | | | | | |
indentor
Smash ball into metal surface and measure diameter of the indention
| | | | | | | | | |
What are the mechanical properties of metals? - CORRECT
| | | | | | | | |
ANSWER✔✔-- strength |
- formability
| |
- stiffness
|
- toughness
|
- durability
|
Strength - CORRECT ANSWER✔✔-The max load a material can take
| | | | | | | | | |
before fracture
|
Properties of Strength (6) - CORRECT ANSWER✔✔-- tensile
| | | | | | | |
- yield
|
- compression
|
Questions With Correct Answers
Types of Hardness Testing (3) - CORRECT ANSWER✔✔-Rockwell, Brinell,
| | | | | | | | |
Vickers or Knoop
| |
Can FCC or BCC hold more carbon? - CORRECT ANSWER✔✔-FCC
| | | | | | | | |
Are Hardness Rockwell B (HRB) and Hardness Brinell (HB) the same or
| | | | | | | | | | | |
different tests? - CORRECT ANSWER✔✔-Different
| | | |
(more/less)
___ grains = ____ ductility = ____ slip - CORRECT ANSWER✔✔-smaller
| | | | | | | | | | |
grains = more ductility = more slip
| | | | | | |
vice versa
|
(higher/lower)
___ temp --> ___ grain size - CORRECT ANSWER✔✔-higher temp -->
| | | | | | | | | | |
larger grins size
| |
(higher/lower)
,___ MoE --> ___ deflection - CORRECT ANSWER✔✔-higher MoE = less
| | | | | | | | | | |
deflection (droop) |
MoE of: (all x 10^6)
| | | |
Carbon Steel |
Titanium
Aluminum
Plastics - CORRECT ANSWER✔✔-Carbon Steel: 30
| | | | |
Titanium: 20 |
Aluminum: 10 |
Plastics: .5 |
What is the microstructure of the Delta Iron Triangle? - CORRECT
| | | | | | | | | | |
ANSWER✔✔-BCC
Is grain size a determining factor in if a material is BCC/FCC or
| | | | | | | | | | | | |
Austenite/Ferrite/Pearlite? - CORRECT ANSWER✔✔-No, you can have | | | | | | |
any grain size of the same material
| | | | | |
What motion is used for wear testing? - CORRECT ANSWER✔✔-Rubbing
| | | | | | | | |
,What heat treatments soften a material? - CORRECT ANSWER✔✔-
| | | | | | | |
Tempering, annealing, stress relieving, and normalizing
| | | | |
Rockwell Hardness Testing (process) - CORRECT ANSWER✔✔-Apply
| | | | | | |
minor load, apply major load, remove loads, calculate the difference of
| | | | | | | | | | |
the indentions
|
Rockwell Hardness Testing (Indentors) - CORRECT ANSWER✔✔-1/16"
| | | | | | |
Tungsten Carbide Ball for B&T
| | | |
120 degree Diamond Cone or Brale for C, A, & N (EX: HRC)
| | | | | | | | | | | |
Rockwell Regular loads - CORRECT ANSWER✔✔-Minor: 10 kg
| | | | | | |
Major: 60kg, 100kg, 150kg
| | |
Rockwell Superficial loads - CORRECT ANSWER✔✔-Minor: 3kg
| | | | | |
Major: 15kg, 30 kg, 45kg
| | | |
What does a major load mean? - CORRECT ANSWER✔✔-Load that
| | | | | | | | | |
makes the second indention
| | |
Differences between regular and superficial loads - CORRECT
| | | | | | | |
ANSWER✔✔-regular - prefer to use this | | | | |
superficial - use if material is really thin or soft
| | | | | | | | |
, Rockwell: difference between Beuler and Wilson? - CORRECT
| | | | | | | |
ANSWER✔✔-They are just different brands, same type of rockwell
| | | | | | | | |
hardness test |
Brinell Hardness Test - CORRECT ANSWER✔✔-Uses 10mm ball as
| | | | | | | | |
indentor
Smash ball into metal surface and measure diameter of the indention
| | | | | | | | | |
What are the mechanical properties of metals? - CORRECT
| | | | | | | | |
ANSWER✔✔-- strength |
- formability
| |
- stiffness
|
- toughness
|
- durability
|
Strength - CORRECT ANSWER✔✔-The max load a material can take
| | | | | | | | | |
before fracture
|
Properties of Strength (6) - CORRECT ANSWER✔✔-- tensile
| | | | | | | |
- yield
|
- compression
|
