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 first 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.
教学大纲 - 您将从这门课程中学到什么
周
1完成时间为 2 小时
Introduction [Difficulty: Easy || Student Effort: 1hr 30mins]
This module will introduce the core principles of materials science. Topics that will be covered include the different general material types (metal, ceramic, polymer, etc.) and the properties associated with each type, some methods that are used to experimentally determine and quantify a material's properties, and how a materials engineer might go about choosing a suitable material for a simple application. This module also introduces the concept of the microstructure-processing-properties relationship which is at the heart of all materials science.
14 个视频 （总计 70 分钟）, 4 个阅读材料, 2 个测验
14 个视频
1.2 Metals8分钟
1.3 Ceramics5分钟
1.4 Polymers6分钟
1.5 Semiconductors3分钟
1.6 Composites5分钟
1.7 Correlated Properties2分钟
1.8 Materials Design Paradigm2分钟
1.9 Application to Product Design6分钟
1.10A Mechanical Tests Part 11分钟
1.10B Mechanical Tests Part 211分钟
1.10C Mechanical Tests Part 32分钟
1.10D Mechanical Tests Part 46分钟
1.11 Conclusion1分钟
4 个阅读材料
Learning Outcomes10分钟
Consent Form10分钟
Supplemental Materials for this Module10分钟
Get More from Georgia Tech10分钟
2 个练习
Quiz 1.1 (Lectures 1.1 - 1.5)20分钟
Quiz 1.2 (Lectures 1.6 - 1.10)20分钟
周
2完成时间为 4 小时
Atomic Structure and Bonding [Difficulty: Easy || Student Effort: 2hrs]
In this module, we will discuss the structure of the atom, how atoms interact with each other, and how those interactions affect material properties. We will explore how the types of atoms present in a material determine what kind of bonding occurs, what differentiates the three types of primary bonds - metallic, ionic, and covalent, and the implications of the type of bonding on the material microstructure. You will learn how atoms arrange themselves as a natural result of their size and bonding. This knowledge will provide you with a foundation for understanding the relationship between a material's microstructure and its properties.
18 个视频 （总计 112 分钟）, 3 个阅读材料, 4 个测验
18 个视频
2.2 Atomic Structure8分钟
2.3 Periodic Chart and Electron Orbitals8分钟
2.4 Modification for Atoms & Crystals6分钟
2.5 Primary Bonds5分钟
2.6A Ionic Bonds Part 17分钟
2.6B Ionic Bonds Part 27分钟
2.6C Ionic Bonds Part 35分钟
2.7A Radius Ratio & Coordination Number Part 14分钟
2.7B Radius Ratio & Coordination Number Part 24分钟
2.7C Radius Ratio & Coordination Number Part 33分钟
2.8 Covalent Bonds7分钟
2.9 Mixed Bonds7分钟
2.10 Weak Bonds6分钟
2.11A Basic Thermodynamics Part 18分钟
2.11B Basic Thermodynamics Part 26分钟
2.12 Basic Kinetics7分钟
2.13 Conclusion54
3 个阅读材料
Learning Outcomes10分钟
Supplemental Materials for this Module10分钟
Earn a Georgia Tech Badge/Certificate/CEUs10分钟
4 个练习
Quiz 2.1 (Lectures 2.1 - 2.5)20分钟
Quiz 2.2 (Lectures 2.6 - 2.9)20分钟
Quiz 2.3 (Lectures 2.10 - 2.11)20分钟
Quiz 2.4 (All Module 2 Lectures)20分钟
周
3完成时间为 4 小时
Crystalline Structure [Level of Difficulty: Medium || Student Effort: 2hrs 30mins]
This module covers how atoms are arranged in crystalline materials. Many of the materials that we deal with on a daily basis are crystalline, meaning that they are made up of a regularly repeating array of atoms. The "building block" of a crystal, which is called the Bravais lattice, dtermines some of the physical properties of a material. An understanding of these crystallographic principles will be vital to discussions of defects and diffusion, which are covered in the next module.
21 个视频 （总计 143 分钟）, 2 个阅读材料, 4 个测验
21 个视频
3.2 Symmetry7分钟
3.3 2-Dimensional Symmetry7分钟
3.4 2-Dimensional Symmetry - Lattice and Basis4分钟
3.5 Crystal Systems and Bravais Lattices9分钟
3.6 Why the Bravais Lattice?9分钟
3.7 FCC Hard Sphere Model5分钟
3.8 BCC Hard Sphere Model5分钟
3.9 Calculating Density6分钟
3.10 Hard Sphere Packing3分钟
3.11 Hard Sphere Packing - Visualization5分钟
3.12 Miller Indices - Directions8分钟
3.13 Miller Indices - Planes7分钟
3.14 Miller Indices - Additional Planes of Interest2分钟
3.15 Linear and Planar Densities7分钟
3.16 Crystals with 2 Atoms per Lattice Point6分钟
3.17 Crystals with 2 Ions or 2 Different Atoms per Lattice Point7分钟
3.18 Crystals with Several Atoms per Lattice Point9分钟
3.19 Polycrystalline Materials and Liquid Crystals10分钟
3.20 X-Ray Diffraction and Crystal Structure14分钟
3.21 Summary1分钟
2 个阅读材料
Learning Outcomes10分钟
Supplemental Materials for this Module10分钟
4 个练习
Quiz 3.1 (Lectures 3.1 - 3.6)20分钟
Quiz 3.2 (Lectures 3.7 - 3.12)20分钟
Quiz 3.3 (Lectures 3.13 - 3.16)20分钟
Quiz 3.4 (Lectures 3.17 - 3.20)20分钟
周
4完成时间为 4 小时
Point Defects and Diffusion [Level of Difficulty: Medium || Student Effort: 2hrs 30mins]
In the previous module, we learned how the lattice structure of a crystalline material in part determines the properties of that material. In this module, we will begin to learn how defects - deviations from the expected microstructure - also have a large effect on properties. This module covers one-dimensional, or point, defects which can be missing atoms (vacancies) or excess atoms (interstitial solution) or the wrong type of atom at a lattice point (substitutional solution). Building on these concepts, part of this module will cover diffusion - the movement of atoms through the crystal structure.
19 个视频 （总计 136 分钟）, 2 个阅读材料, 3 个测验
19 个视频
4.2 Point Defects6分钟
4.3 Point Defects in Ionic and Covalent Materials5分钟
4.4 Substitutional Solid Solutions9分钟
4.5 Solid Solutions - Vegard's Law8分钟
4.6 Fick's First Law10分钟
4.7 Self Diffusion7分钟
4.8 Interstitial Solid Solutions9分钟
4.9 Discussion Question5分钟
4.10 Grain Boundary Effects8分钟
4.11 Grain Boundaries as Short Circuit Paths6分钟
4.12 Diffusion in Polymers3分钟
4.13 Fick's Second Law - The Thin Film Solution8分钟
4.14 Fick's Second Law - Modifications to the Thin Film Solution7分钟
4.15 Case Hardening a Gear7分钟
4.16 Case Hardening a Gear - Example Problem9分钟
4.17 Development of a Useful Approximation4分钟
4.18 Appllication to Engineering Materials9分钟
4.19 Summary4分钟
2 个阅读材料
Learning Outcomes10分钟
Supplemental Materials for this Module10分钟
3 个练习
Quiz 4.1 (Lectures 4.1 - 4.6)20分钟
Quiz 4.2 (Lectures 4.7 - 4.12)20分钟
Quiz 4.3 (All Module 4 Lectures)40分钟
4.7
81 个审阅20%
完成这些课程后已开始新的职业生涯
12%
通过此课程获得实实在在的工作福利
20%
加薪或升职
热门审阅
Material Behavior is a key subject for material studies and also very important for the mechanical engineering career. This course is very helpful and very easy to understand the hole concepts.
The course was excellent. A lot of in-depth material, beyond even what I remember from college. Coverage of polymer systems in addition to the usual metals was very nice, and the
讲师
Thomas H. Sanders, Jr.
Regents' ProfessorSchool of Materials Science and Engineering
关于 乔治亚理工学院
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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