JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

Students will be able to

• 1. Learn the concepts of metallurgy and materials science in manufacturing processes.
• 2. Interpret phase diagrams of different alloy systems.
• 3. Describe the concept of heat treatment and other strengthening mechanisms.

Course Outcomes

At the end of the course, student will be able to

• 1. Memorize the types of Crystal structures and their defects.
• 2. Learn the necessity of alloying and identify types of alloy phases.
• 3. Demonstrate importance of critical understanding of heat treatment in achieving required properties.
• 4. Apply the knowledge of heat treatment to enhance surface properties.
• 5. Analyze the properties and micro structure of ferrous and non-ferrous alloys.
• 6. Develop new materials and enhance properties for the advanced applications.

UNIT - I

Crystal Structure: Unit cells, Metallic and Ceramic crystal structures. Imperfection in solids: Point, line, surface and volume defects; dislocations, strengthening mechanisms, slip systems, critical resolved shear stress.

UNIT - II

Hume – Rothery Rules: Alloys, substitutional and interstitial solid solutions- Phase diagrams: Interpretation of binary phase diagrams and microstructure development; eutectic, peritectic, Eutectiod, peritectoid and monotectic reactions. Iron Iron-carbide phase diagram and microstrctural aspects of ledeburite, austenite, pearlite, ferrite and cementite.

UNIT - III

Heat treatment of steels: Isothermal transformation diagrams for Fe-C alloys and microstructures development. Martensite, Bainite. Annealing. Normalising, Hardening, Tempering and Spheroidising.

UNIT - IV

Continuous cooling curves and interpretation of final microstructures and properties-Thermo mechanical treatments like austempering, martempering, surface hardening methods like case hardening, carburizing, nitriding, cyaniding, carbo-nitriding, flame and induction hardening, vacuum and plasma hardening

UNIT - V

Alloy steels, properties and applications of stainless steels and tool steels, maraging steels- Types of cast irons (grey, white, malleable and spheroidal graphite cast irons), copper and its alloys (Brass and bronze)- Aluminium and its alloys (Al-Cu Alloys). Ceramics and Composites: Types, properties and applications.

TEXT BOOKS:

• 1. V. Raghavan, “Material Science and Engineering’, Prentice Hall of India Private Limited, Fifth Edition.
• 2. William. D. Callister, David G. Rethwisch, “Materials Science and Engineering: An Introduction”, John Wiley & Sons, 2018.
• 3. SIDNEY H AVNER, Introduction to Physical Metallurgy, McGraw Hill,2017

REFERENCE BOOKS:

• 1. Kenneth G. Budinski and Michael K. Budinski, “Engineering Materials”, Prentice Hall of India Private Limited, 9th Edition, Indian Reprint, 2009.
• 2. U. C. Jindal, “Engineering Materials and Metallurgy”, Pearson, 2011.