Metals

Question 1

Processing steps

Answer 1

Metal containing ore
raw metal product
stock metal shapes
prelim and final devices

Question 2

Fabrication methods

Answer 2

Investment casting
CAD/CAM
Forging
powder metallurgic processes
(grinding, polishing)

Question 3

Surface treatments

Answer 3

improve implant fixation to bone
sintering
plasma or flame spraying
ion implantation (nitriding improves surface hardness and wear)
chemical cleaning and passification

Question 4

Microstructure

Answer 4

Chemical and crystallographic identities of the phases

distribution of phases and their effects on properties

Question 5

Stainless steel

Answer 5

316L grade 2

additives for metal surface and bulk microstructure

Question 6

ASTM grain size

Answer 6

N=2^n-1

N = # grains in 1 square inch at 100x magnification

Question 7

Cobalt chromium alloys

and 3 microstructure features

Answer 7

corrosion resistant in chloride environments
investment casting
microstructure features
1 - co-rich matrix (a phase) and grain boundary carbides (dendrites)
2 - large grain size
3 - casting defects
improve alloys microstructure and mechanical properties using powdered metallurgic techniques, smaller grain size and finer carbide distribution

Question 8

Titanium alloys

Answer 8

F67 - commercially pure Ti
F136 extra low interstitial (O, N, C)
dental implants