MS2016: Introduction to Metallurgy

Course Instructors

Associate Professor Aravind Dasari

Assistant Professor Prashant Kumar

Course AIMS

The fundamental understanding of phase transformations in materials is the key for tuning their structure and properties. This course will provide the necessary basic knowledge to relate bonding, diffusion, and temperature (heat treatment) in solids to their evolution of structure (covering aspects of interphase movement and solidification). Emphasis will also be on the thermodynamic concepts behind these different phenomena.

Intended Learning Outcomes

By the end of this course, you (as a student) would be able to:

1. Predict the properties and interactions of different materials by understanding their composition, making connections to structure and bonding.
2. Explain the different types of imperfections in solids (metallic and ionic) and their influence on properties.
3. Identify carbon sites (interstitial positions – octahedral and tetrahedral) in both α− and γ− iron lattices; illustrate the importance of strain energy in choosing the correct interstitial site; explain the symmetric and asymmetric distortion
4. Calculate the effect of temperature on vacancy formation and the rate at which they move in a lattice.
5. Explain and analyse Hume-Rothery rules that govern the formation of solid solutions.
6. Apply Fick’s first and second laws for solid state diffusion in binary systems; to solve fundamental and industry-oriented problems and recognize the significance of diffusion coefficient D.
7. Explain the importance of interfacial energy and its influence on grain shape as well as grain boundary migration and pinning force concepts.
8. Describe the driving forces for growth of a pure solid or alloy after nucleation.
9. Explain the concepts of constitutional undercooling, solute pile-up at the solid-liquid interfaces, differences between columnar and equiaxed solidification, formation of dendrites, and eutectic solidification.
10. Analyse the implication of nucleation and nucleation rate in relation to Gibbs free energy requirements.
    

Course Content

L1: Imperfections in Solids
L2: Imperfections in Solids
L3: Diffusion
L4: Diffusion
L5: Thermodynamics of Interface
L6: Thermodynamics of Interface
L7: Solidification
L8: Solidification

Reading and References

Suggested reading:

• Phase Transformations in Metals and Alloys, 3rd edition, David A Porter, Kenneth E Easterling, Mohamed Sherif, PUB Feb 2009, CRC Press.
• Fundamentals of solidification, W. Kurz and D.J. Fisher, Trans Tech Publications, 4th Edition,1998.