JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

This laboratory course is mainly intended to make the students

understand the microstructure of various ferrous, nonferrous metals and their alloys through microscopic observation and also correlate the microstructure with their mechanical characteristics.

Course Outcomes

At the end of this laboratory course work, the student will be able to

• Prepare the ferrous and nonferrous metals and alloys for microscopic examination
• Determine the grain sizes and phase analysis of ferrous and nonferrous alloys
• Construct the phase equilibrium diagrams graphically
• Operate the optical microscope to observe fine microstructure for the given metal/alloy

LIST OF EXPERIMENTS

• 1. Preparation of precise crystal structure models and study of their structural parameters, calculation of packing factor.
• 2. Study of the required equipment of specimen preparation for metallographic examination.
• 3. Study of principle, construction and salient features of different classes of metallurgical microscopes.
• 4. Calculation of Grain Size and inclusion content in the given materials and study of ASTM charts. Microstructural analysis of ferrous alloys
• 5. Identification and analysis of microstructure of hypoeutectoid, eutectoid, and hypereutectoid steels.
• 6. Identification and analysis of microstructure of Alloy steels.
• 7. Identification and analysis of microstructure of different classes of cast irons. Microstructural analysis of nonferrous alloys
• 8. Identification and analysis of microstructure of various nonferrous alloys viz.,
• Aluminum base
• Copper base and
• Titanium base alloys Construction of phase equilibrium diagrams
• 9. Construction of graphical representation of isomorphous phase equilibrium diagram and study of phases, invariant points, and invariant reactions.
• 10. Construction of graphical representation of eutectic phase equilibrium diagrams and study of phases, invariant points, and invariant reactions.
• 11. Construction of graphical representation of Iron-Iron Carbide phase equilibrium diagram and study of phases, invariant points, and invariant reactions.