2020 Crystal Growth and Structure Formation

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Academic unit or major
Undergraduate major in Materials Science and Engineering
Instructor(s)
Kumai Shinji  Kobayashi Equo 
Course component(s)
Lecture
Mode of instruction
ZOOM
Day/Period(Room No.)
Tue5-6(S8-101)  Fri5-6(S8-101)  
Group
-
Course number
MAT.M304
Credits
2
Academic year
2020
Offered quarter
1Q
Syllabus updated
2020/9/18
Lecture notes updated
-
Language used
Japanese
Access Index

Course description and aims

This course focusses on solidification or crystal growth from molten metals and alloys, and covers the important fundamentals of designing and minifacturing of metallic products. Great change in physical, chemical and mechnical properties caused by liquid/solid transformation is reviewed from the wide standpoint from nanoscopic-scale to macroscopic-scale. Students learn nucleation and growth of solids and microstructure formation, and understand the formationn mechanism of solidification structure and its controlling methods. Introduction of other crystal growth structure formation processes, such as powder metallurgy, mechanical alloying, vapor deposition etc. are also included.

Student learning outcomes

Physical, chemical and mechanical properties of metallic materilas are strongly related to their microstructure. The microstructure of metallic materials is different depending on their fabrication processes. At the end of this course, students will be able to understand the relationship between the crystal growth manner and the resultant microstructure, and how it affects the properties of metallic materials.

Keywords

solidification, dendrite growth, solute segregation,structure control, shape casting, continuous casting, powder metallurgy, mechanical alloying

Competencies that will be developed

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

Class flow

Attendance is taken in every class.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Difference between solids and liquids (Structure and properties) To understand the importance of the metal casting through the comaprison of the properties between solid and liquid.
Class 2 Crystal growth from molten pure metals / Homogeneous nucleation of solids To underatand the concept of homogeneous nucleation of pure metals and the required level of critical super coolong.
Class 3 Heterogeneous nucleation of solids To understand the concept of heterogeneous nucleation of pure metals and the required level of super cooling. To learn the effect of wetting angle on the heterogeneous nucleation.
Class 4 Crystal growth (From the viewpont of atomic movement) To underatand the crystal growth of pure metals from the view point of atomic movement across the solid-liquid interface.
Class 5 Crystal growth (From the viewpoint of heat flow) To understand the crystal growth of pure metals from the viewpoints of heat flow and the latent heat flow across the solid-liquid interface.
Class 6 Crystal growth from molten alloys / Solute distribution and segregation (Equilibrium solodification and non-equilibrium solidification) To understand the crystal growth from the molten alloys. In particlular, to learn the characteristics of solute distribution and solute segregation during the equilibrium and non-equilibrium solidification processes.
Class 7 Solute distribution and segregation (Non-equilibrium solidification and constitutional supercooling) To understand the crystal growth from the molten alloys. In particlular, to learn the characteristics of solute distribution and solute segregation during the non-equilibrium solidification process and the effect of constitutional super cooling.
Class 8 Crystal growth and microstructure formation of single-phase alloys To understand the crystal growth of single-phase alloys and the characteristics of the resultant solidified structure.
Class 9 Crystal growth and microstructure formation of dual-phase alloys To understand the crystal growth of dual- and multi-phase alloys and the characteristics of the resultant solidified structure.
Class 10 Sintering and Powder metallurgy I (Sintering of metals) To understand fablication methods of powder metallurgy and characteristics of the metallic materials sintered.
Class 11 Sintering and powder metallurgy II (Sintering of other materials) To understand characteristics of the other materials sinterd.
Class 12 Functionally Gradient Materials To understand fablication methods of functionally gradient materials and their characteristics
Class 13 Vapor deposition process and microstructure To understand fablication methods of thin film by vapor deposition process and their characteristics
Class 14 Achievement evaluation and general practice To understand characteristics of materials processed powder metallurgy and vapor deposition and functionally gradient materials

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.

Textbook(s)

None required.

Reference books, course materials, etc.

KINZOKU NO GYOUKO WO SHIRU (in Japanese): Eisuke Niiyama (Maruzen)
Phase Transformation in Metals and Alloys: D.A.Porter and K.E. Easterling (Taylor & Francis)、Welding Metallurgy: Shindo Kou (Wiley-Interscience)

Assessment criteria and methods

Students will be assessed and scored based on Final exam (80%) and General exercize problems (20%).

Related courses

  • MAT.M207 : Phase Diagram and Stability in Metals

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

Enrollment in related courses is desirable

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