1.
Final structure of austempered steel
A
Pearlite
B
Ferrite + graphite
C
Bainite
D
Martensite
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Final structure of austempered steel
Pearlite
Ferrite + graphite
Bainite
Martensite
Not an important heat treatment process parameter
Heating rate
Temperature
Cooling rate
Atmosphere
Prime structural disadvantage of P/M products
Low density
Porosity
High damping capacity
None
Usual casting method for making dental crowns
Sand casting
Die casting
Continuous casting
Investment casting
Noble metal
Al
Ag
Mo
W
Not a noble meta
Cu
Ag
Au
Pt
Refractory metal
Ag
W
Pt
Ni
In white cast irons, carbon present as...................
Graphite flakes
Graphite nodules
Cementite
Carbon does not exist
Stainless steel is so called because of its................
High strength
High corrosion resistance
High ductility
Brittleness
% C in medium carbon steels ranges from ...............
0.3 - 0.4
0.3 - 0.5
0.3 - 0.6
None