strain hardening/cold working definition - Answer increasing number of dislocations
surface defects/grain boundaries/stacking faults - Answer small grains have more grain
boundaries with higher strength, N=2^(n-1) where "n" is ASTM grain size number, big
"n" means small size
, point defects - Answer substitutional, interstitial (smaller atoms), vacancies
solid solution strengthening definition - Answer substitutional or interstitial atoms
Diffusion - Answer movement of atoms through crystal structure
% area reduction - Answer (delta(A)/A_o)*100 =ductility
YS, TS, modulus ____ with high T - Answer decrease
% elongation and % area reduction ____ with high T - Answer increase
hardness test - Answer measure the penetration of surface by hard object, indicates
wear resistance
brinell hardness test - Answer sphere
rockwell hardness test - Answer diamond
impact test - Answer energy absorbed in sudden blow, high for FCC, want metal with
transition T below service temperature, Charpy test
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