Steel, ever-evolving material, has been the most preeminent of all materials since it can provide wide range of properties that can meet ever-changing requirements. In this course, we explore both fundamental and technical issues related to steels, including iron and steelmaking, microstructure and phase transformation, and their properties and applications.
In the following 3 courses, microstructure and phase transformation in steels will be discussed in detail with specific examples. This course in particular, covers the basic terminology, general explanation on iron-carbon system and concepts you must know to understand the phase transformation of steels.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 32 minutes
Introduction•2 minutes
Phase and phase transformation•10 minutes
Iron-carbon system•9 minutes
Phase transformation in steel•11 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Microstructure and phase transformation in steels II: Non-equilibirum microstructure in steel
Module 2•1 hour to complete
Module details
This course explains the non-equilibrium microstructure, and related displacive transformation in steels. Phenomenological theory on martensite transformation will be introduced, and other concepts such as Ms temperature and bainite microstructure will be covered as well.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 32 minutes
Introduction•3 minutes
Displacive transformation•7 minutes
Phemenological theory of martensite transformation•13 minutes
Other characteristics•10 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Microstructure and phase transformation in steels III: Role of alloying elements in steels
Module 3•1 hour to complete
Module details
Material design based on alloying is covered in this course. Role of alloying elements in steels with respect to the control of microstructure and mechanical properties will be discussed in detail. Influence of alloying elements on phase stability, transformation kinetics, and strengthening of steels is discussed.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 36 minutes
Introduction•2 minutes
Materials design in steel•10 minutes
General role of alloying elements 1•16 minutes
General role of alloying elements 2•8 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Properties of steels and their applications I
Module 4•1 hour to complete
Module details
In the following 3 courses, different types of steels will be introduced with their properties and applications. This course typically covers some of the first generation steels containing conventional low strength steels and HSLA (high strength low alloy) steels. Detailed explanation on the microstructures and related properties will be treated.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 19 minutes
Introduction•3 minutes
Effect of heat treatment paths: microstructure•3 minutes
Conventional low strength steels•4 minutes
Micro-alloyed ferrite-base steels•9 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Properties of steels and their applications II
Module 5•1 hour to complete
Module details
Characteristics of acicular ferrite, micro-alloyed carbon steels, and multiphase steels will be discussed with information on their production and applications. Martensitic steels and effect of various heat treatments will also be discussed.
What's included
5 videos1 assignment
Show info about module content
5 videos•Total 38 minutes
Acicular ferrite steels•6 minutes
Micro-alloyed medium & high C steels•4 minutes
Multiphase steels•11 minutes
Martensitic steels•9 minutes
Effect of heat treatment paths: martensite/bainite•8 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Properties of steels and their applications III
Module 6•1 hour to complete
Module details
This course introduces advanced steels such as TWIP steels, and light weight steels, and explains some other steels of pearlitic steels, Si steels and tool steels. Also, property requirements for automobile parts and low temperature applications are treated.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 33 minutes
Twinning induced plasticity steels•6 minutes
Lightweight steels•13 minutes
Property requirements for automotive and linepipe applications•6 minutes
Others•8 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
Stainless steels
Module 7•1 hour to complete
Module details
This course covers from the fundamental aspects to the production, physical metallurgy, corrosion and mechanical properties of stainless steels. Detailed explanation on the microstructures, corrosion and mechanical properties of different types of stainless steels will be treated.
What's included
4 videos1 assignment
Show info about module content
4 videos•Total 55 minutes
Introduction and classification•12 minutes
Phase diagrams and microstructure•14 minutes
Corrosion of stainless steels•13 minutes
Mechanical properties and future development•16 minutes
1 assignment•Total 30 minutes
Quiz•30 minutes
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POSTECH opened its doors in 1986 as the first research-oriented university in Korea to educate the brightest minds in the country and lead the transition of Korea’s higher education from dissemination to creation of knowledge. Since its establishment 30 years ago, POSTECH has taken on numerous challenges and innovations to revolutionize the culture of and raise the bar for scientific research in Korea. As such, the past three decades represent the proud history of POSTECH, which has marked a meaningful milestone in the community of higher education and science/engineering in Korea and has since grown into one of the top universities in Asia.
Now, POSTECH is poised to take another leap forward over the next three decades: driven by the open and fearless spirit to tackle the unknown, it will serve as a flagship university that proposes a new role for value creation in society. We at POSTECH will continue to dedicate ourselves to our mission—providing the finest education and fostering talented youth into leaders equipped with a comprehensive and essential skill set for the future. Also, we will further build upon the research excellence POSTECH has achieved thus far to make direct contributions not only in expanding boundaries of scientific knowledge but also in leading the socio-economic progress of the country and region.
The founding tenets of POSTECH aims to serve the nation and humanity through education, research, and industry-academic cooperation. Going forward, we will spare no efforts to open a new path of value creation through continuously ensuring “devoted education,” “outstanding research,” and “robust job and business creation” and to develop into a top global university that proudly represents Korea.
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S
4·
Reviewed on Jun 15, 2020
The course overall is very good!!!!!It could have been better if the course had more topics.Value for the time and effort.
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BS
5·
Reviewed on Sep 15, 2020
This is a great course. It has expanded my knowledge in the mechanical properties and application of steel alloys.
P
PP
5·
Reviewed on Feb 21, 2018
Great and in-dept details with reasonable step-by-step approaches. It may need some metallurgy backgrounds that might be already covered in Ferrous Technology I.
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