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Metallurgical Engineering Physics Of Metals In Metallurgy Difficulty: Medium

A peak in the X-ray diffraction pattern is observed at 2θ = 78°, corresponding to [311] planes of an fcc metal, when the incident beam has a wavelength of 0.154 nm. The lattice parameter of the metal is approximately

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Hot metal at 1700 K is poured in a sand mould that is open at the top. Heat loss from the liquid metal takes place by Assertion: a : During hardening of steel, the component to be heat treated is strongly agitated in the quenching medium. Reason : r : The agitation breaks down the vapour barrier allowing the quench to proceed at a more rapid rate. The dislocation climb is least affected by The intensive thermodynamic variables among the following are: P. Pressure Q. Volume R. Temperature S. Enthalpy Match the NDT methods with the type of defects detected. NDT methods Type of defects detected P. Ultrasonic 1. Internal Q. X-ray 2. Most R. Eddy current 3. External S. Liquid penetrant 4. Surface breaking