課程信息

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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.

學生職業成果

14%

通過此課程獲得實實在在的工作福利

20%

加薪或升職

可分享的證書

完成後獲得證書

100% 在線

立即開始，按照自己的計劃學習。

可靈活調整截止日期

根據您的日程表重置截止日期。

完成時間大約為10 小時

英語（English）

字幕：英語（English）

學生職業成果

14%

通過此課程獲得實實在在的工作福利

20%

加薪或升職

可分享的證書

完成後獲得證書

100% 在線

立即開始，按照自己的計劃學習。

可靈活調整截止日期

根據您的日程表重置截止日期。

完成時間大約為10 小時

英語（English）

字幕：英語（English）

教學大綱 - 您將從這門課程中學到什麼

內容評分97%（1,170 個評分）

週

1

週 1

完成時間為 5 小時

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.

完成時間為 5 小時

25 個視頻（總計 180 分鐘）, 5 個閱讀材料, 4 個測驗

25 個視頻

1.1 Introduction1分鐘

1.2 One-Component Phase Diagrams and Gibbs Phase Rule11分鐘

1.3 Regions of Two Phase Equilibrium8分鐘

1.4 Additional One-Component Phase Diagrams3分鐘

1.5 Binary Isomorphous Phase Diagrams8分鐘

1.6 The Lever Rule9分鐘

1.7 Phase Fractions6分鐘

1.8 Equilibrium Cooling Curves7分鐘

1.9 Equilibrium Isomorphous Diagrams6分鐘

1.10 Analysis of a Phase Diagram5分鐘

1.11 Deviations from Ideal Behavior10分鐘

1.12 Eutectic Phase Diagram10分鐘

1.13 Determination of Phase Boundaries7分鐘

1.14 Eutectic Microstructure Development8分鐘

1.15 Equilibrium Cooling of an Off-Eutectic Alloy7分鐘

1.16 Equilibrium Cooling of an Off-Eutectic Alloy - Calculations6分鐘

1.17 Microstructure Development in an Off-Eutectic Alloy6分鐘

1.18 Invariant Reactions in Two Component Systems6分鐘

1.19 Peritectic Phase Diagrams9分鐘

1.20 Analysis of Complex Phase Diagrams12分鐘

1.21 Monotectic Phase Diagrams5分鐘

1.22 Phase Separation and Critical Points6分鐘

1.23 Solid State Reactions11分鐘

1.24 Summary of Invariant Reactions in Two-Component Systems2分鐘

1.25 Summary1分鐘

5 個閱讀材料

Learning Outcomes10分鐘

Consent Form10分鐘

Get More from Georgia Tech10分鐘

Supplemental Materials for this Module10分鐘

Earn a Georgia Tech Badge and CEUs10分鐘

4 個練習

Quiz 1.1 (Lessons 1.1 - 1.8)20分鐘

Quiz 1.2 (Lessons 1.9 - 1.12)20分鐘

Quiz 1.3 (Lessons 1.13 - 1.17)20分鐘

Quiz 1.4 (Lessons 1.18 - 1.24)20分鐘

週

2

週 2

完成時間為 5 小時

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.

完成時間為 5 小時

33 個視頻（總計 226 分鐘）, 3 個閱讀材料, 3 個測驗

33 個視頻

2.1 Introduction5分鐘

2.2 The Concept of a Driving Force6分鐘

2.3 Homogeneous Nucleation6分鐘

2.4 Undercooling and the Barrier to Homogeneous Nucleation4分鐘

2.5 Random Clusters in the Liquid7分鐘

2.6 Nucleation and Growth9分鐘

2.7 Wetting5分鐘

2.8 Heterogeneous Nucleation5分鐘

2.9 Heterogeneous Nucleation - Spherical Cap Approximation7分鐘

2.10 Heterogeneous Nucleation - Sodium Acetate Demonstration2分鐘

2.11 Heterogeneous Nucleation - Applications4分鐘

2.12 Homogeneous and Heterogeneous Nucleation6分鐘

2.13 Types of Interfaces12分鐘

2.14 Johnson, Mehl, and Avrami (JMA) Equation7分鐘

2.15A Calculations Using the JMA Equation Part 14分鐘

2.15B Calculations Using the JMA Equation Part 24分鐘

2.16 Application of the JMA Equation7分鐘

2.17 Developing High Strength Alloys6分鐘

2.18 The Iron-Carbon System7分鐘

2.19 Diffusional/DiffusionlessTransformations6分鐘

2.20 Heat Treating a Plain Carbon Eutectoid Steel2分鐘

2.21 Formation of Pearlite in Eutectoid Steel9分鐘

2.22 Formation of Bainite in a Eutectoid Steel5分鐘

2.23 Formation of Martensite9分鐘

2.24 Heat Treatments of Austenite Decomposition Products2分鐘

2.25 Isothermal Transformation (IT) Diagrams for a Eutectoid Steel6分鐘

2.26 Off-Eutectoid Isothermal Transformation (IT) Diagrams7分鐘

2.27 4340 Isothermal Transformation (IT) Diagram5分鐘

2.28 Continuous Transformation (CCT) Diagrams13分鐘

2.29 Precipitation Hardening in Al-Cu Alloys9分鐘

2.30 Nonequilibrium Solidification12分鐘

2.31 Sintering8分鐘

2.32 Summary3分鐘

3 個閱讀材料

Learning outcomes10分鐘

Supplemental Materials for this Module10分鐘

Where to go from here10分鐘

3 個練習

Quiz 2.1 (Lessons 2.1 - 2.5)20分鐘

Quiz 2.2 (Lessons 2.6 - 2.10)20分鐘

Quiz 2.3 (Lessons 2.11 - 2.15)20分鐘

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Material Processing