What is the need for a grain boundary in an annealed material? – McqOptions

MCQOPTIONS

1.	What is the need for a grain boundary in an annealed material?
A.	To control the grain size
B.	To maintain its shape
C.	It can produce a stable equilibrium at the grain edges
D.	During annealing it produce a metastable equilibrium at the grain boundary intersections
Answer» E.

Discussion

No Comment Found

Related MCQs

If unit area of grain boundary advances a distance 4mm, the number of moles of material that enter in the grain B is 4* (1/ 8(mm3/mol)) and the free energy released is given by_______ ( G =10kJ/mol)
On heating to a sufficiently high temperature, what happens to the new grains?
It is possible that the higher mobility of special grain boundaries plays a role in the development of recrystallization textures.
For low mole fractions of solute in the matrix 0.5 (Xo), the boundary solute concentration Xb (in 10-12) is given by_____ ( G =105kJ/Mol, T =505K)
During recrystallization, the boundaries between the new strain-free grains and the original deformed grains are acted on by a force G /V where, in this case, G is due to the difference in dislocation strain energy between the two grains.
Calculate the chemical potential if the molar volume is given as 5 mm3/mol? (Given the value of radius as 4mm and the interfacial energy is 8 kJ/mm2?
Calculate the pulling force F, if the chemical potential and the molar volume is given as respectively?
Under which of the following circumstances the grain boundary behaves as a thin soap film?
What will be the torque acting on the boundary if the boundary happens to be at the orientation of a cusp in the free energy?
What is the need for a grain boundary in an annealed material?