Phase Transformation in Materials

Synopsis of the course

The object of this lecture is to understand basic concepts of phase transformation and  microstructure in materials, and to consider nucleation phenomena and growth mechanism. Based on fundamental understanding of thermodynamics of materials and phase diagram, this course focus on kinetics of reaction in materials for 3rd-4th grade students majoring material engineering. In addition, This lecture will cover the theory of reaction and solidification which occur in the phase or on the interface of crystals, phase transformation phenomena with or without diffusion.

Teaching materials & Reference Books
  1. D. A. Porter and K. E. Eastering, “Phase Transformations in Metals and  Alloys”, Chapman & Hall, 2008
  2. Paul Shewmon, “Diffusion in Solids”, TMS, 1989.
  3. Reed-Hill, “Physical Metallurgy Principles”, PWS, 1992.
  4. Tu, Mayer, Feldman, “Electronic Thin Film Science for Electrical Engineers and Materials Scientists”, Macmillian Publishing Company, 1992.

Chapter 1    Thermodynamics and Phase Diagrams

Chapter 2    Diffusion

Diffusion Mechanism

Diffusion Equation and Its Solution

High Diffusivity Path

Diffusion in Multiphase Binary Systems

Chapter 3    Crystal Interfaces and Microstructure

Interfacial Free Energy

Boundaries in Single Phase Solids

Interphase Interfaces in Solids

Interface Migration

Chapter 4    Solidification

Nucleation in Pure Metals

Growth of a Pure Solids

Solidification of Single Phase Alloys

Eutectic Solidification

Chapter 5     Diffusional Transformations in Solids

Homogeneous Nucleation

Heterogeneous Nucleation

Precipitate Growth

TTT Diagrams

Precipitation in Age-Hardening Alloys

Spinodal Decomposition

The Precipitation of Ferrite from Austenite

Ordering Transformation

Chapter 6    Diffusionless Transformation

Characteristics of Diffusionless Transformation

Martensite Transformation

Assessment & Grading

Homework & attendance 20%

Quiz(2 times) 45 %

Final Exam 35 %

A (20~30 %), B (30 %), C (30~40 %), D or F (<10%)