UPH007: PHYSICAL METALLURGY

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Course Objectives: The objective of this course is to provide a physical basis that links the structure of materials with their properties, focusing primarily on metal. Understanding the concepts of alloy design and microstructural engineering, linking processing and thermodynamics to the structure and properties of metals

                                                                      

Introduction: Overview of crystal structures, solid solutions.

 

Equilibrium Diagrams: Cooling curves - Phase diagram determination -Phases, solid solution types, compounds - Hume - Rothery Rules. Gibbs Phase Rule. modified phase rule. Composition and amount of phases. Lever rule. Detail discussion on eutectic, eutectoid and peritectic systems. Concept of peritectoid, monotectic. syntectic systems - examples. Iron-Carbon diagram. Ternary phase diagram. Concept of isothermal isopleth and liquidus plots.

 

Solid State Transformations: Phase equilibria involving eutectoid and peritectoid transformations, TTT and CCT diagrams.

 

Engineering Alloys: Steels and their specification, Mircoalloyed Steels, Automobile Steels, Dual Phase Steel. The Cu-Zn, Al-Si, Al-Cu, Cu-Sn and Ti based alloys.

 

Diffusion in Solids: Ficks’s Laws, Diffusion along grain boundaries and free surfaces, problems, Kirkendell effect.

 

Nucleation and Growth Kinetics: Homogeneous nucleation and Heterogenous nucleation, Diffusion controlled growth, Relation with transformation rate problems.

 

Solidification of Metals: crystal growth from the liquid phase, stable interface freezing, dendritic growth, dendritic freezing in alloys, undercooling, freezing of ingots, segregation, inverse segregation, homogenization, porosity, zone refining.

 

Micro Project: Student will carry out micro project on alloy design and microstructural analysis.

Course Learning Outcomes (CLO):

Students will be able to:

1.      apply and integrate knowledge of structure, properties, processing, and performance to solve materials selection and design problems within realistic constraints.

2.      solve equilibrium phase diagram, construct and apply them to predict various physical properties of solids.

3.      design nucleation and growth experiments and will be able control the kinetics.

Text Books:   

1.      R.E. Reed Hill: Physical Metallurgy Principles. Wadsworth Publishing Co Inc. (2008).

2.      Sydney h. Avner: Introduction to physical metallurgy; McGraw-Hill Education Pvt Limited, India (1997).

 

Reference Books:

1.      R.M. Brick, and Phillips:Structure and Properties of Alloys McGraw–Hill Books: Company, Inc, Newyork (1965).

2.      Vijendra Singh: Physical Metallurgy; Standard Publishers Distributors, India (2005).