相變化
Phase Transformations
| 節 | 週二 | 週三 |
|---|---|---|
3 10:10–11:00 | 相變化 EF201 2 節連堂 | 相變化 EF201 |
4 11:10–12:00 |
* 根據陽明交大上課時間表所列
This unit provides a focus on the microstructure of materials. It conveys an understanding of how microstructures undergo changes and highlights the importance of phase transformations in controlling microstructures. Phase diagrams and the key concepts of Gibbs energy and chemical potential are used to explain phase equilibrium and phase stability. You will also learn how diffusion enables changes in the chemical distribution and its impact on microstructure. The effects of temperature, atomic diffusion, driving forces and kinetics on new phase formation will also be explored. Technological important material/alloy systems will be presented to illustrate these concepts and to highlight the importance of controlling material microstructure for engineering design.
Introduction of Materials Science & Engineering; Physical Metallurgy; Thermodynamics
Tutor: 李翰 (作業考卷批閱) 教學方法及教學相關配合事項（如助教、網站或圖書及資料庫等）: 1. Florida International University Zhe Cheng 教授 （https://www.youtube.com/channel/UCX6ZAA2ANpPqRQLb6NWQ-Bw/search?query=EMA5001） 2. 清大廖建能教授線上教學（https://www.youtube.com/playlist?list=PLS0SUwlYe8cxnf6NBkLyPJ48LHhs-9LH5） 3. 劍橋Harry Bhadeshia教授線上教學 (https://www.youtube.com/c/bhadeshia123/playlists)
Mid-term exam: 20% In class assignment: 40% (Individual 20% + Group 30%) Final exam: 30%
| 週次 | 主題 |
|---|---|
| 第 1 週 | Welcome note Chapter 1: Thermodynamics and Phase Diagrams - 1 • Metastable • Le Chatelier‘s principle • Intensive vs. extensive • Temperature effects on single component system • Pressure effects on single component system |
| 第 2 週 | Chapter 1: Thermodynamics and Phase Diagrams - 2 • Driving force for solidification • Binary system: ideal solution: Temperature effects • Binary system: Chemical potential, regular solution • Real solution • Characterizations |
| 第 3 週 | Chapter 1: Thermodynamics and Phase Diagrams – 3 • Heterogeneous systems • Binary phase diagram • Miscibility gap • Phase diagram containing intermediate phases • Vacancy • Phase rule • Kinetics |
| 第 4 週 | Chapter 2: Diffusion - 1 • Definition • Fick’s 1st & 2nd laws • Mechanism of diffusion • Interstitial diffusion • Thermal activation |
| 第 5 週 | Chapter 2: Diffusion - 2 • Substitutional diffusion • Self-diffusion • Vacancy diffusion • Diffusion in alloys |
| 第 6 週 | Chapter 2: Diffusion-3 • Kirkendall effect & Darken's equation • Atomic mobility • High-diffusivity paths |
| 第 7 週 | Chapter 3: Crystal Interfaces and Microstructure – 1 • Interfacial free energy • Solid/vapor interfaces • Grain boundary |
| 第 8 週 | -Mid-term test: 20% You are allowed to bring a double sided A4 cheat sheet |
| 第 9 週 | Chapter 3: Crystal Interfaces and Microstructure - 2 • Interphase interfaces: coherent, semicoherent, incoherent • Glissile interface • Solid/liquid interface • Interface migration |
| 第 10 週 | Chapter 4: Solidification - 1 • Introduction to solidification • Equilibrium solidification • Non-equilibrium solidification |
| 第 11 週 | Chapter 4: Solidification - 2 • Nucleation theory • Nucleation in pure metals • Homogeneous nucleation • Heterogeneous nucleation |
| 第 12 週 | Chapter 4: Solidification - 3 • Grain growth • Grain morphology • Interface stability • Alloy solidification • Supercooling & dendrite growth • Eutectic solidification • Solidification of ingots and castings |
| 第 13 週 | In class assignment: - Individual 20%, Group 30% - You are allowed to bring a double sided A4 cheat sheet |
| 第 14 週 | Chapter 5: Diffusional Transformation in Solids • Precipitation • Homogeneous nucleation • Heterogeneous nucleation • TTT diagram |
| 第 15 週 | Revision |
| 第 16 週 | Final exam 30% - You are allowed to bring a double sided A4 cheat sheet - Objective questions - Structured questions |
Phase Transformations in Metals and Alloys Authors: Porter, David A.; Easterling, Kenneth E.; Sherif, Mohamed
- 地點
- 教室
- 時間
- 生師預約
- 聯絡方式
- E3