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
proposé par
Georgia Institute of Technology
Programme du cours : ce que vous apprendrez dans ce cours
Semaine
15 heures pour terminer
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 vidéos (Total 180 min), 5 lectures, 4 quiz
25 vidéos
1.1 Introduction1 min
1.2 One-Component Phase Diagrams and Gibbs Phase Rule11 min
1.3 Regions of Two Phase Equilibrium8 min
1.4 Additional One-Component Phase Diagrams3 min
1.5 Binary Isomorphous Phase Diagrams8 min
1.6 The Lever Rule9 min
1.7 Phase Fractions6 min
1.8 Equilibrium Cooling Curves7 min
1.9 Equilibrium Isomorphous Diagrams6 min
1.10 Analysis of a Phase Diagram5 min
1.11 Deviations from Ideal Behavior10 min
1.12 Eutectic Phase Diagram10 min
1.13 Determination of Phase Boundaries7 min
1.14 Eutectic Microstructure Development8 min
1.15 Equilibrium Cooling of an Off-Eutectic Alloy7 min
1.16 Equilibrium Cooling of an Off-Eutectic Alloy - Calculations6 min
1.17 Microstructure Development in an Off-Eutectic Alloy6 min
1.18 Invariant Reactions in Two Component Systems6 min
1.19 Peritectic Phase Diagrams9 min
1.20 Analysis of Complex Phase Diagrams12 min
1.21 Monotectic Phase Diagrams5 min
1.22 Phase Separation and Critical Points6 min
1.23 Solid State Reactions11 min
1.24 Summary of Invariant Reactions in Two-Component Systems2 min
1.25 Summary1 min
5 lectures
Learning Outcomes10 min
Consent Form10 min
Get More from Georgia Tech10 min
Supplemental Materials for this Module10 min
Earn a Georgia Tech Badge and CEUs10 min
4 exercices pour s'entraîner
Quiz 1.1 (Lessons 1.1 - 1.8)20 min
Quiz 1.2 (Lessons 1.9 - 1.12)20 min
Quiz 1.3 (Lessons 1.13 - 1.17)20 min
Quiz 1.4 (Lessons 1.18 - 1.24)20 min
Semaine
25 heures pour terminer
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 vidéos (Total 226 min), 3 lectures, 3 quiz
33 vidéos
2.1 Introduction5 min
2.2 The Concept of a Driving Force6 min
2.3 Homogeneous Nucleation6 min
2.4 Undercooling and the Barrier to Homogeneous Nucleation4 min
2.5 Random Clusters in the Liquid7 min
2.6 Nucleation and Growth9 min
2.7 Wetting5 min
2.8 Heterogeneous Nucleation5 min
2.9 Heterogeneous Nucleation - Spherical Cap Approximation7 min
2.10 Heterogeneous Nucleation - Sodium Acetate Demonstration2 min
2.11 Heterogeneous Nucleation - Applications4 min
2.12 Homogeneous and Heterogeneous Nucleation6 min
2.13 Types of Interfaces12 min
2.14 Johnson, Mehl, and Avrami (JMA) Equation7 min
2.15A Calculations Using the JMA Equation Part 14 min
2.15B Calculations Using the JMA Equation Part 24 min
2.16 Application of the JMA Equation7 min
2.17 Developing High Strength Alloys6 min
2.18 The Iron-Carbon System7 min
2.19 Diffusional/DiffusionlessTransformations6 min
2.20 Heat Treating a Plain Carbon Eutectoid Steel2 min
2.21 Formation of Pearlite in Eutectoid Steel9 min
2.22 Formation of Bainite in a Eutectoid Steel5 min
2.23 Formation of Martensite9 min
2.24 Heat Treatments of Austenite Decomposition Products2 min
2.25 Isothermal Transformation (IT) Diagrams for a Eutectoid Steel6 min
2.26 Off-Eutectoid Isothermal Transformation (IT) Diagrams7 min
2.27 4340 Isothermal Transformation (IT) Diagram5 min
2.28 Continuous Transformation (CCT) Diagrams13 min
2.29 Precipitation Hardening in Al-Cu Alloys9 min
2.30 Nonequilibrium Solidification12 min
2.31 Sintering8 min
2.32 Summary3 min
3 lectures
Learning outcomes10 min
Supplemental Materials for this Module10 min
Where to go from here10 min
3 exercices pour s'entraîner
Quiz 2.1 (Lessons 2.1 - 2.5)20 min
Quiz 2.2 (Lessons 2.6 - 2.10)20 min
Quiz 2.3 (Lessons 2.11 - 2.15)20 min
4.7
23 avis20%
a bénéficié d'un avantage concret dans sa carrière grâce à ce cours
33%
a obtenu une augmentation de salaire ou une promotion
Meilleurs avis
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
Enseignant
Thomas H. Sanders, Jr.
Regents' ProfessorSchool of Materials Science and Engineering
À propos de 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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