Related Questions

In order to double its yield strength, the grain size of a steel of ASTM grain size number 2 should be changed to ASTM grain size number (neglect friction stress)
An ASTM grain size determination is being made from a photomicrograph of a metal at a magnification of 1X. What is the ASTM grain size number of the metal if there are 992 grains per square mm?
If a steel having ASTM grain size number 5 have transition temperature equal to 20 degrees. For the same steel having ASTM grain size 10, the DBTT will be equal to __________
A copper sample has been metallographically analysed for determining its mean grain size. It is found to have an ASTM grain size number of 5. The number of grains per mm2 in the sample will be
The largest size of immobilised segment of dislocation in a Frank Read (FR) source contained in a polycrystalline material is of the order of grain size. In a metal of 10 μm grain size, the shear stress required to operate such a FR source is 100 MPa. If the grain size in the same metal is reduced to 10 μm, the shear stress required to operate such FR source would be . . . . . . . . MPa.
A material with grain size of ASTM No.6 has a lattice frictional stress 100 MN/m2 and locking parameter (Hall-Petch constant) 0.10 MN/$${m^{\frac{3}{2}}}$$
Grain size of the material is approximately
As the ASTM grain size number increases, the number of grain per unit volume will ______________
As the ASTM grain size number increases, the grain diameter will ______________
For ASTM grain size number 10, give the number of grains per square inch at a magnification of 100x.
Grain boundary diffusion makes a significant contribution to the total flux when___(Db and D1 are the diffusivities through the grain boundary and defect free lattice and ȣ, d are the effective thickneβ and grain size).