Q.1.
The grain boundary sliding is promoted by increasing ____________ and decreasing ___________
Q.2.
The material with low stacking fault energy is prone to sub-grain formation compared to the metal with high stacking fault energy.
Q.3.
The grain boundary sliding is a shear process occurring along the ________
Q.4.
The total strain in the material is%. Find the approximate percentage of strain which is caused by grain boundary sliding in total deformation?
Q.5.
The dislocation glide is one of the mechanisms responsible for creep of the metals. Its condition for dislocation mechanism is _______________
Q.6.
The dislocation creep mechanism is active in the region ___________, where σ is applied stress and G is shear modulus.
Q.7.
The diffusional creep is the chief mechanism activated in the stress range of ___________
Q.8.
The chief mechanism responsible for Nabarro-Herring creep is _____________
Q.9.
The chief mechanism responsible for Coble creep is _____________
Q.10.
The metal undergoing creep operates under only one creep mechanism at a time.