636-2005/01 – Fundamentals of the Heat Treatment (ZaklTZ)
| Gurantor department | Department of Material Engineering | Credits | 5 |
| Subject guarantor | doc. Ing. Petra Váňová, Ph.D. | Subject version guarantor | doc. Ing. Petra Váňová, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 2 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2014/2015 | Year of cancellation | 2022/2023 |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- 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.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
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).
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Continuous verification of study results:
full-time form of study - 1 written tests, 3 specified programs during the semester;
combined form of study - 1 semester project.
Final verification of study results: oral or written exam.
E-learning
Other requirements
There are no further special requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
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.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction