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
|Intercultural skills||Communication skills||Specialist 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)||Due date of a report will be announced by instructor, if necessary|
|Class 2||Crystal growth from molten pure metals / Homogeneous nucleation of solids|
|Class 3||Heterogeneous nucleation of solids|
|Class 4||Crystal growth (From the viewpont of atomic movement)|
|Class 5||Crystal growth (From the viewpoint of heat flow)|
|Class 6||Crystal growth from molten alloys / Solute distribution and segregation (Equilibrium solodification and non-equilibrium solidification)|
|Class 7||Solute distribution and segregation (Non-equilibrium solidification and constitutional supercooling)|
|Class 8||Crystal growth and microstructure formation of single-phase alloys|
|Class 9||Crystal growth and microstructure formation of dual-phase alloys|
|Class 10||Achievement evaluation and general practice (1) Solidification and crystal growth|
|Class 11||Sintering and Powder metallurgy I (Sintering of metals)|
|Class 12||Sintering and powder metallurgy II (Sintering of other materials)|
|Class 13||Mechanical alloying|
|Class 14||Vapor deposition process and microstructure|
|Class 15||Achievement evaluation and general practice (2) Powder metallurgy and vapor deposition|
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