JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
II Year B.Tech. MME - I Sem L T/P/D C
4 -/-/- 4
PHYSICAL METALLURGY

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Objective:

The Prime objective of this course is to make the student understand the interrelation between microstructure and characteristics of Metals and Alloys. The course also critically focuses on the crystallography, phase transformations that occur in several ferrous and nonferrous metallurgical systems as a function of temperature and composition through phase equilibrium diagrams.

UNIT – I

Crystal structure: Crystallography: space lattice, unit cell, lattice parameter, coordination number, atomic radius, packing factor, density calculations. Miller’s indices. Relation between crystal structure and ductility. Solidification: homogeneous and heterogeneous nucleation. Polymorphism.

UNIT – II

Microstructures: Grains and grain boundaries. ASTM Grain Size. Grain size dependence of strength. Strain hardening, Recrystallization, and grain growth. Solid solutions - substitutional and interstitial solid solutions.

UNIT – III

Binary Phase diagrams: Construction. Isomorphous and eutectic systems-Specific examples: Cu-Ni, Pb-Sn, Al-Cu. Structure evolution. Phase rule. Lever rule. Hume-Rothery rules. Importance of electron-to-atom ratio. Intermediate phases, Intermetallic compounds. Application of phase diagrams. Precipitation hardening.

UNIT – IV

Iron-Carbon Phase Diagram: Phase Transformations. Microstructures and quantitative phase evaluation of the Fe-C Alloys. Effect of alloying elements on the phase diagram.

UNIT – V

Isothermal transformation diagrams: Construction and interpretation. Effect of alloying elements on kinetics of transformation. Pearlitic, Bainitic, and Martensitic transformations.

TEXT BOOKS:

1. Introduction to Physical Metallurgy – Sidney H. Avner, Published October 1st 1974 by McGraw-Hill Companies
2. Materials Science and Engineering, An introduction - WD Callister, Jr., Adapted by R. Balasubramaniam, John Wiley & Sons, NY, Indian edition, 2007

REFERENCES:

1. Engineering Physical Metallurgy and Heat treatment – Yuri Lakhtin
2. C. Suryanarayana, Experimental Techniques in Mechanics and Materials, John Wiley, 2006
3. Foundations of Materials Science and Engineering – William Fortune Smith, Javad Hashemi McGraw-Hill Higher Education, 01-July-2003
4. Metallographic Laboratory Practice – George Louis Kehl McGraw-Hill, 1939
5. Essentials of Materials Science Engineering-Donald R. Askeland, Pradeep P. Phule, Cengage learning.
6. Materials Science and Metallurgy- C. Daniel Yesudian, D. G. Harris Samuel, Scitech Publications.
7. Engineering Materials-V.S.R Murthy, A.K. Jena, TataMcGraw Hill
8. Engineering Materials and Metallurgy-R. Srininasan, TataMcGraw Hill

Outcome:

At the conclusion of this course, the student will be able to appreciate and establish the crystal structure of metals, structure-property correlation in metals, importance of phase equilibrium diagrams of ferrous (in particular Iron-Carbon System) and nonferrous metallurgical systems and their significance as a tool for alloy design. The student will also be able to determine the quantity of phases present, ASTM Grain Size, kinetics of solidification of alloys.