Austenite phase in Iron-Carbon equilibrium diagram _______
A. is face centered cubic structure
B. has magnetic phase
C. exists below 727 °C
D. all of the above
In metallography, microscopic method provides information about _____
A. impurities in a metal
B. location and extent of segregation
C. uniformity of structure
D. all of the above
The study of metallographic includes ____
A. alloy constituents
B. failure analysis
C. metal structure
D. all of the above
A. Bright field illumination
B. Dark field illumination
C. Both a. and b.
D. None of the above
What is meant by recalescence in cooling curves?
A. Time required for liquefying solid components
B. Time required for completely solidifying the casted components
C. The cooling curve formed due to latent heat of fission
D. Liberated heat increases temperature of an under cooled liquid metal during nucleation
A. Undercooling
B. Solidification
C. Thermal arrest
D. Thermometry