Lil deck Flashcards
Heat Capacity
Amount of energy needed to raise temp 1 degree
Youngs modulus
Deals with stiffness, Stress/Strain
Anisotropic
One direction
Area
pi r^2
Nucleation
Grain growth
3 crystals
BCC, FCC, HCP
isotropic
different directions
Thermosets
Once it sets it stays
Thermoplastics
can heat and deform
Hypo
below
hyper
above or more active
Work hardening
strengthening of a metal from plastic deformation
Crystaline
Atoms are in a specific order. Long range
Amorphous
no long range order
Atom diameter
10-^9m = 1 atom
Stiffness
resistance to change of shape that is elastic, material returns to original shape when unloaded
Strength
resistance to permanent distortion or total failure
2 types of deformation
Temporary and Permanent
Hydrostatic Pressure
same force in all directions
Normalization
removing confounding factor like geometry
Elastomers
large amount of elastic deformation
Composites
Two or more fibers
Heat treatment
process of controlled heating and cooling to purposefully alter a materials structure and properties
Annealing
heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses and toughen it.
Normalizing
heating steel to a temperature higher than annealing
Nonferrous
not iron based
Hardness
related to strength
Solvus line
materials will separate into 2 phase mixture
Austenite
equilibrium phase
Pealite
ductile
Martensite
extremely brittle
Bainite
in between ductile and brittle
3 primary bonds
ionic, covalent, matallic
Ionic bonding
electrons are transferred
Covalent bonding
electron sharing
metallic bonding
electrons moving freely
alloys
composed of two or more types of elements
