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MTL 200 FINAL EXAM QUESTIONS AND ANSWERS
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MTL 200 FINAL EXAM QUESTIONS AND ANSWERS
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Name: Score:41 Multiple choice questions
Term 1 of 41
phase types in a composite
Particle-Reinforced
Fiber-Reinforced
Structural
Matrix/continuous phase
Dispersed (Reinforcement) Phase
Whiskers
fibers
wires
softens when heated, hardens when cooled, reversable
Term 2 of 41
liquidus line
solid on bottom
whiskers
fibers
wires
liquid on top
-laminates
-sandwich panels
,Term 3 of 41
Conditions for Diffraction in;
FCC?
BCC?
-atomic migration in pure metals
-migration of atoms from one metal to another metal
FCC= h,k and l must all be odd or even
BCC=h,k and l must add up to an even number
-make tie line
-take value of opposite section and divide by whole
(planes), <family of directions>, {family of planes}, [directions]
Term 4 of 41
What is a Sandwich panel?
-honeycomb core between two sheets
benefits: low density, large stiffness
-very strong under tension
smaller atoms squeeze in between big atoms
where one solid meets two other solids
,Term 5 of 41
Types of Corrosion
1. Uniform
2. Galvanic
3. Crevice
4. Pithing
5. Interegramular
6. Selective leading
7. Erosion- corrosion
8. Stress Corrosion
Isotactic- Repeats on same side
Syndiotactic- Repeats alternate sides
Atactic-in random poitions
1. material selection
2. environmental alteration
3. design
4.coating
5 Cathodic protection ( supplying electrons to make metal a cathode)
Cis- CH3 and H on same side
Trans- CH3 and H on opposite sides
Term 6 of 41
FCC Structure. atoms?Formula?
Whiskers
Fibers
Wires
4 atoms
4R=√2 a
Quartz
Cristobalite
Tridymite
4, 6 , and 8
, Term 7 of 41
What is;
Self-Diffusion?
Inter-Diffusion?
(planes), <family of directions>, {family of planes}, [directions]
negative
oxidation occurs
-atomic migration in pure metals
-migration of atoms from one metal to another metal
-make tie line
-take value of opposite section and divide by whole
Term 8 of 41
Meaning of paranthesis;
( ),< >, { }, [ ]
(planes), <family of directions>, {family of planes}, [directions]
-make tie line
-take value of opposite section and divide by whole
FCC= h,k and l must all be odd or even
BCC=h,k and l must add up to an even number
-atomic migration in pure metals
-migration of atoms from one metal to another metal
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