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.
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.
solidification, dendrite growth, solute segregation,structure control, shape casting, continuous casting, powder metallurgy, mechanical alloying
|✔ Specialist skills||Intercultural skills||Communication skills||Critical thinking skills||✔ Practical and/or problem-solving skills|
Attendance is taken in every class.
|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|
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.
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)
Students will be assessed and scored based on Final exam (80%) and General exercize problems (20%).
Enrollment in related courses is desirable