MATSE 259 EXAM 1 PSU QUESTIONS WITH
COMPLETE SOLUTIONS.
1 of 98
Term
What are the two primary mechanisms for diffusion?
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Host and substitutional Diffusion Doping and carburizing
Vacancy and interstitial
Substitutional and interstitial
Diffusion
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2 of 98
Term
On the engineering stress-strain curve, the point where yielding
corresponds to the initial departure from linearity is the....
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ultimate strength endurance limit
proportional limit plastic limit
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3 of 98
Definition
experiences very little or no plastic deformation upon fracture (less
than 5% strain)
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Stiff Materials Brittle Materials
, Composite Materials Elastic Materials
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4 of 98
Term
Diffusion is slower for...
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Body Centered Cubic (BCC), Face 1) Closer packed structures
Centered Cubic (FCC), Hexagonal 2)Larger diffusing atoms
Centered Prism (HCP)
3) Higher density materials
energy is needed to move,
highest in intermediate states. move to area of higher to lower as
Bonds are long as no bulk motion
broken then reformed.
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5 of 98
Term
all bonds involve
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, transitory electrons bound electrons
free electrons valence electrons
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6 of 98
Term
The measure of the ability of the material to absorb energy up to
fracture is referred to as what?
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brittleness toughness
stiffness elasticity
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7 of 98
Term
common hardness scales
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COMPLETE SOLUTIONS.
1 of 98
Term
What are the two primary mechanisms for diffusion?
Give this one a try later!
Host and substitutional Diffusion Doping and carburizing
Vacancy and interstitial
Substitutional and interstitial
Diffusion
, Don't know?
2 of 98
Term
On the engineering stress-strain curve, the point where yielding
corresponds to the initial departure from linearity is the....
Give this one a try later!
ultimate strength endurance limit
proportional limit plastic limit
Don't know?
3 of 98
Definition
experiences very little or no plastic deformation upon fracture (less
than 5% strain)
Give this one a try later!
Stiff Materials Brittle Materials
, Composite Materials Elastic Materials
Don't know?
4 of 98
Term
Diffusion is slower for...
Give this one a try later!
Body Centered Cubic (BCC), Face 1) Closer packed structures
Centered Cubic (FCC), Hexagonal 2)Larger diffusing atoms
Centered Prism (HCP)
3) Higher density materials
energy is needed to move,
highest in intermediate states. move to area of higher to lower as
Bonds are long as no bulk motion
broken then reformed.
Don't know?
5 of 98
Term
all bonds involve
Give this one a try later!
, transitory electrons bound electrons
free electrons valence electrons
Don't know?
6 of 98
Term
The measure of the ability of the material to absorb energy up to
fracture is referred to as what?
Give this one a try later!
brittleness toughness
stiffness elasticity
Don't know?
7 of 98
Term
common hardness scales
Give this one a try later!
