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Metallurgical Engineering Metallurgy Of Nuclear Metals Difficulty: Medium

Match the process with the property required. P. Cold rolling 1. Wettability Q. Milling 2. Ductility R. Brazing 3. Comparability S. Powder metallurgy 4. Machinability Thorium, zirconium, platinum, nickel, iron, molybdenum, tungsten are the . . . . . . . . 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 soft magnetic material should have The figure below shows the cumulative size distribution of particles of a crushed mineral. 10 kg of this material is first passed through a sieve of size 400 micron and then through a sieve of size 300 micron. The weight of mineral (in kg ) that is retained on the 300 micron sieve is . . . . . . . .