| Course Unit Code | 636-2005/02 |
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| Number of ECTS Credits Allocated | 5 ECTS credits |
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| Type of Course Unit * | Optional |
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| Level of Course Unit * | First Cycle |
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| Year of Study * | Second Year |
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| Semester when the Course Unit is delivered | Summer Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| BET37 | doc. Ing. Petra Váňová, Ph.D. |
| Summary |
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| Principles of solid phase transformations; Thermodynamics and kinetics of solid phase transformations; Iron-Carbon equilibrium diagram; Transformations of austenite under cooling; Pearlite-Ferrite-cementite; Martensite and bainite; Heat treatment – general: Annealing: Normalizing; quenching and tempering; Surface hardening, carburizing; Heat treatment of stainless steels; Heat treatment of cast irons and non-ferrous metals (Al, Cu alloys). |
| Learning Outcomes of the Course Unit |
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- Define the importance and the classification of heat treatments of metallic materials;
- Outline the principal equilibrium heat treatments of steels – annealing;
- Clarify the principal non-equilibrium heat treatments of steels – quenching and tempering;
- Describe processes of oxidation and decarburization during heat treatment of steels;
- Differentiate and define the principal procedures of thermo chemical treatment of steels;
- Outline the essential heat treatments of cast irons and non-ferrous metals;
- Compare the internal structure and properties of metallic materials after heat treatments;
- Propose the appropriate heat treatment for the selected kind of material.
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| Course Contents |
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Lectures:
1. Importance of heat treatments; basic classification – heat treatment, thermo-chemical treatment; thermo-mechanical treatment; equilibrium vs. non-equilibrium heat treatments.
2. Iron – carbon system, austenite phase transformations upon cooling; diffusion, diffusion less transformations – products – ferrite, pearlite, bainite, martensite.
3. Diagrams of isothermal and non-isothermal austenite decomposition upon cooling – principle, construction, use.
4. Non-desirable processes during heat treatments – decarburizing, oxidation.
5. Classification of steel annealing; stress relief annealing, recrystallisation annealing, spheroidising annealing; thermal cycles of annealing, final structure and properties.
6. Normalising; homogenising annealing; thermal cycles of annealing, final structure and properties.
7.-8. Steel quenching; quenching media; hardenability and its testing; methods of cooling – modified quenching procedures.
9. Tempering of steels – tempering stages, impact on the steel properties.
10. Internal stresses as a result of the heat treatment – thermal stresses, structure stresses.
11. Thermo-chemical heat treatments; basic principles; case hardening – principal reactions, technologies, quenching and tempering after carburising, resulting properties. Nitriding and carbonitriding; principles, technologies, resulting properties.
12. Heat treatments of the cast irons; classification of the cast irons; heat treatment of grey and nodular cast irons; malleablising of the cast irons.
13. Heat treatment of some non-ferrous metals (aluminium, copper and their alloys); principle and stages of precipitation hardening; ageing. Summary; importance of the heat treatment of metallic materials.
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| Recommended or Required Reading |
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| Required Reading: |
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TOTTEN, G. E., ed. Steel heat treatment: metallurgy and technologies. 2. vyd. Boca Raton: CRC/Taylor & Francis, 2007. ISBN 978-0-8493-8455-4.
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VÁŇOVÁ, P. Základy tepelného zpracování. Ostrava: VŠB-TU Ostrava, 2011. Dostupné z: https://www.vsb.cz/e-vyuka/cs/subject/653-2005/02 a LMS Moodle
PTÁČEK, L. Nauka o materiálu II. 2. opr. a rozš. vyd. Brno: Akademické nakladatelství CERM, 2002. ISBN 80-7204-248-3.
TOTTEN, G. E., ed. Steel heat treatment: metallurgy and technologies. 2. vyd. Boca Raton: CRC/Taylor & Francis, 2007. ISBN 978-0-8493-8455-4.
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| Recommended Reading: |
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| PORTER, D. A., K. E EASTERLING a M. Y. SHERIF. Phase transformations in metals and alloys. 3. vyd. Boca Raton: CRC Press, 2009. ISBN 978-1-4200-6210-6. |
| PÍŠEK, F., et al. Nauka o materiálu. I, Nauka o kovech. 2. rozš. a zcela přeprac. vyd. Praha: Academia, 1975. |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials, Experimental work in labs |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Credit and Examination | Credit and Examination | 100 (100) | 51 |
| Credit | Credit | 35 | 21 |
| Examination | Examination | 65 | 30 |