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Metallurgical Engineering Metallurgical Thermodynamics And Kinetics Difficulty: Medium

The erder of a chemical reaction 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. Match the following processes with their physical principles. Group 1 Group 2 P. Floatation 1. Difference in specific gravity Q. Jigging 2. Difference in hydrophobicity R. Heavy media separation 3. Difference in lateral movements S. Tabling 4. Differential initial accelaration How specimen placed in anvil for Izod test? During deoxidation of steel, the sequence of addition of elements should be as follows: