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2016　Phase Transformation and Microstructure Control

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Academic unit or major
Graduate major in Materials Science and Engineering
Instructor(s)
Hosoda Hideki  Inamura Tomonari 
Class Format
Lecture     
Media-enhanced courses
Day/Period(Room No.)
Mon1-2(J234)  Thr1-2(J234)  
Group
-
Course number
MAT.M411
Credits
2
Academic year
2016
Offered quarter
3Q
Syllabus updated
2016/4/27
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

This course focuses on the relationships among crystal structure (phase), defect structures (point defects and dislocation) and properties of metals in the first half, since the physical properties of metals and alloys are determined by the crystal structure and microstructures. Emphasis is placed on the thermodynamics of phase transformation and phase diagram to learn basics of the relationship between phase diagram and microstructure. The last half of this course covers the revolution of microstructure upon deformation and heat-treatment in single phase alloy including the hierarchical microstructure of deformed metals, deformation texture, recovery and recrystallization to understand the basics of microstructure control by thermomechanical processing. Exercise problems are set to improve understanding throughout this course.

Student learning outcomes

At the end of this course, students will be able to:
1) Have understanding of basic principles to control phase and microstructure that determine physical properties of metallic materials
2) Have understanding of basics of phase equilibrium, recovery and recrystallization
3) Have understanding of basic concepts to control properties of metallic materials by thermomechanical processing.

In the first half of this course, phase equilibrium, phase diagram, crystal structure, defect structure, mechanical and functional properties of multicomponent system are covered to understand relationships among phase stability, phase and properties of metals and alloys. The last half of this course covers basics of recovery, recrystallization and texture to understand the elementary steps and dominant factors in the revolution of microstructure upon thermomechanical treatments.

Keywords

Interaction energy, crystal structure, defect structure, phase equilibrium, phase diagram, deformation microstructure, recovery, recrystallization, texture, thermomechanical processing

Competencies that will be developed

✔ Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

1) Towards the end of class, students are given exercise problems related to what is taught on that day to solve
2) Attendance is taken in every class

Course schedule/Required learning

  Course schedule Required learning
Class 1 Interaction energy and crystal structure Understand the relationship between interaction energy and crystal structure.
Class 2 Crystal structure, atomic radius and intermetallics Understand the crystal structure of intermetallics.
Class 3 Equilibrium state and binary phase diagram Understand the definition of equilibrium and binary phase diagram.
Class 4 Phase diagram and metallographic structure Students must make sure they understand phase equilibrium and binary phase diagram.
Class 5 Defect structures of crystalline metals Understand the basics of dislocations
Class 6 Crystal structures and mechanical properties of metals (fcc, bcc) Students must make sure they understand lattice defects in metals.
Class 7 Crystal structures and mechanical properties of metals (intermetallics) Students must make sure they understand lattice defects in metals.
Class 8 Structure and energy of grain boundary Understand the definition of grain boundary.
Class 9 Mobility of low angle and high angle grain boundaries Students must make sure they understand the definition of grain boundary.
Class 10 Microstructure and accumulated energy of deformed metals Understand the hierarchical microstructure of deformed metals.
Class 11 Empirical rule and kinetics of recovery and primary recrystallization Understand the definition of recovery and primary recrystallization.
Class 12 Grain growth, continuity and discontinuity of reactions Understand the factors that determine the continuity of reactions.
Class 13 Representation and measurement of texture Understand the representation of texture.
Class 14 Deformation texture Students must make sure they understand the representation of texture.
Class 15 Recrystallization texture Students must make sure they understand the representation of texture.

Textbook(s)

None required.

Reference books, course materials, etc.

None required.

Assessment criteria and methods

1) Studens will be assessed on their understanding of phase stability based on the phase diagram and Gibbs energy, relationship among crystal structure, defect structure and mechanical properties, elementary steps of recovery and recrystallization, revolution of texture.
2) Student's course scores are based on exercise problems (50%) and reports (50%).
3) Full attendance is compulsory.

Related courses

  • MAT.M409 ： Themodynamics for Phase Equilibria
  • MAT.M410 ： Deformation and Strength of Solids

Prerequisites (i.e., required knowledge, skills, courses, etc.)

No prerequisites

Contact information (e-mail and phone)    Notice : Please replace from "[at]" to "@"(half-width character).

Hideki Hosoda　hosoda.h.aa[at]m.titech.ac.jp
Tomonari Inamura inamura.t.aa[at]m.titech.ac.jp

Office hours

Contact by e-mail in advance to schedule an appointment.

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