Have you ever wondered why ceramics are hard and brittle while metals tend to be ductile? Why some materials conduct heat or electricity while others are insulators? Why adding just a small amount of carbon to iron results in an alloy that is so much stronger than the base metal? In this course, you will learn how a material’s properties are determined by the microstructure of the material, which is in turn determined by composition and the processing that the material has undergone.
This is the second of three Coursera courses that mirror the Introduction to Materials Science class that is taken by most engineering undergrads at Georgia Tech. The aim of the course is to help students better understand the engineering materials that are used in the world around them. This first section covers the fundamentals of materials science including atomic structure and bonding, crystal structure, atomic and microscopic defects, and noncrystalline materials such as glasses, rubbers, and polymers.
Material Processing
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Georgia Institute of Technology
Lehrplan - Was Sie in diesem Kurs lernen werden
Woche
15 Stunden zum Abschließen
Phase Diagrams and Phase Equilibria
This course picks up with an overview of basic thermodynamics and kinetics as they pertain to the processing of crystalline materials. The first module deals with phase diagrams - charts that tell us how a material will behave given a certain set of variables such as temperature, pressure, and composition. You will learn how to interpret common and complex phase diagrams and how to extract useful information from them.
25 Videos (Gesamt 180 min), 5 Lektüren, 4 Quiz
25 Videos
1.2 One-Component Phase Diagrams and Gibbs Phase Rule11m
1.3 Regions of Two Phase Equilibrium8m
1.4 Additional One-Component Phase Diagrams3m
1.5 Binary Isomorphous Phase Diagrams8m
1.6 The Lever Rule9m
1.7 Phase Fractions6m
1.8 Equilibrium Cooling Curves7m
1.9 Equilibrium Isomorphous Diagrams6m
1.10 Analysis of a Phase Diagram5m
1.11 Deviations from Ideal Behavior10m
1.12 Eutectic Phase Diagram10m
1.13 Determination of Phase Boundaries7m
1.14 Eutectic Microstructure Development8m
1.15 Equilibrium Cooling of an Off-Eutectic Alloy7m
1.16 Equilibrium Cooling of an Off-Eutectic Alloy - Calculations6m
1.17 Microstructure Development in an Off-Eutectic Alloy6m
1.18 Invariant Reactions in Two Component Systems6m
1.19 Peritectic Phase Diagrams9m
1.20 Analysis of Complex Phase Diagrams12m
1.21 Monotectic Phase Diagrams5m
1.22 Phase Separation and Critical Points6m
1.23 Solid State Reactions11m
1.24 Summary of Invariant Reactions in Two-Component Systems2m
1.25 Summary1m
5 Lektüren
Learning Outcomes10m
Consent Form10m
Get More from Georgia Tech10m
Supplemental Materials for this Module10m
Earn a Georgia Tech Badge and CEUs10m
4 praktische Übungen
Quiz 1.1 (Lessons 1.1 - 1.8)20m
Quiz 1.2 (Lessons 1.9 - 1.12)20m
Quiz 1.3 (Lessons 1.13 - 1.17)20m
Quiz 1.4 (Lessons 1.18 - 1.24)20m
Woche
25 Stunden zum Abschließen
Kinetics of Structural Transformations
If thermodynamics, which we covered in the previous module, tells us how a material wants to change, then kinetics tells us how and how quickly that transformation occurs. This module starts by explaining the driving force for phase transformations. We will cover the nucleation and growth of precipitates, solidification, and sintering. Finally, there are a number of lessons which apply all that has been covered in the course to understanding carbon steels.
33 Videos (Gesamt 226 min), 3 Lektüren, 3 Quiz
33 Videos
2.2 The Concept of a Driving Force6m
2.3 Homogeneous Nucleation6m
2.4 Undercooling and the Barrier to Homogeneous Nucleation4m
2.5 Random Clusters in the Liquid7m
2.6 Nucleation and Growth9m
2.7 Wetting5m
2.8 Heterogeneous Nucleation5m
2.9 Heterogeneous Nucleation - Spherical Cap Approximation7m
2.10 Heterogeneous Nucleation - Sodium Acetate Demonstration2m
2.11 Heterogeneous Nucleation - Applications4m
2.12 Homogeneous and Heterogeneous Nucleation6m
2.13 Types of Interfaces12m
2.14 Johnson, Mehl, and Avrami (JMA) Equation7m
2.15A Calculations Using the JMA Equation Part 14m
2.15B Calculations Using the JMA Equation Part 24m
2.16 Application of the JMA Equation7m
2.17 Developing High Strength Alloys6m
2.18 The Iron-Carbon System7m
2.19 Diffusional/DiffusionlessTransformations6m
2.20 Heat Treating a Plain Carbon Eutectoid Steel2m
2.21 Formation of Pearlite in Eutectoid Steel9m
2.22 Formation of Bainite in a Eutectoid Steel5m
2.23 Formation of Martensite9m
2.24 Heat Treatments of Austenite Decomposition Products2m
2.25 Isothermal Transformation (IT) Diagrams for a Eutectoid Steel6m
2.26 Off-Eutectoid Isothermal Transformation (IT) Diagrams7m
2.27 4340 Isothermal Transformation (IT) Diagram5m
2.28 Continuous Transformation (CCT) Diagrams13m
2.29 Precipitation Hardening in Al-Cu Alloys9m
2.30 Nonequilibrium Solidification12m
2.31 Sintering8m
2.32 Summary3m
3 Lektüren
Learning outcomes10m
Supplemental Materials for this Module10m
Where to go from here10m
3 praktische Übungen
Quiz 2.1 (Lessons 2.1 - 2.5)20m
Quiz 2.2 (Lessons 2.6 - 2.10)20m
Quiz 2.3 (Lessons 2.11 - 2.15)20m
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Top-Bewertungen
Very informative and descriptive course. It encourages a person to do self calculations. Lecture and the material available are all very well explained. Would love to take similar courses.
I enjoyed this courese. It is going to be very usefull for me to carryon my research work. Thanku Coursera and JTU
Dozent
Thomas H. Sanders, Jr.
Regents' ProfessorSchool of Materials Science and Engineering
Über Georgia Institute of Technology
The Georgia Institute of Technology is one of the nation's top research universities, distinguished by its commitment to improving the human condition through advanced science and technology.
Georgia Tech's campus occupies 400 acres in the heart of the city of Atlanta, where more than 20,000 undergraduate and graduate students receive a focused, technologically based education.
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