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Metallurgical Engineering
Miscellaneous In Metallurgy
Difficulty: Medium
Graphite fibres are used to make undirectional Al-matrix composites. Young's modulus of graphite and aluminium are 400 GPa respectively. If a composite contains 60 volume % of fiber and is loaded along the fiber direction, the Youngs Modulus of the composite is . . . . . . . . GPa.
More Metallurgical Engineering Questions
For a cubic metal with lattice parameter of 3.92°A, the first four diffraction peaks from the X-ray powder diffraction pattern taken with Cu-Ka radiation (λ = 1.5405°A) occur at 2θ values of 39.7, 46.2, 67.5 and 81.3 degrees. The crystal structure of the metal is
Fracture toughness, KIC, decreases with
pure nickel melts at 1726K at 10 5 Pa (1 atm.) pressure, ΔV (solid-liquid) = 0.26 × 10 -6 m 3 . mol -1 and the heat of fusion, ΔHf = 18000 J.mol -1 . The melting point of pure nickel, when acted upon by a pressure of 10 8 Pa is . . . . . . . . K.
Match the processes given in Group I with the corresponding metals in Group 2 . Group 1 Group 2 P. Matte smelting 1. Lead Q. Cyanide leaching 2. Copper R. Carbothermic reduction 3. Gold S. Fused salt electrolysis 4. Aluminium
Which one of the following microstructures of a Ni-base superalloy imparts the highest creep resistance?