636-0421/01 – Fundamentals of Heat Treatment (ZTZ)
Gurantor department | Department of Material Engineering | Credits | 6 |
Subject guarantor | prof. Dr. Ing. Jaroslav Sojka | Subject version guarantor | prof. Dr. Ing. Jaroslav Sojka |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 2 | Semester | summer |
| | Study language | Czech |
Year of introduction | 2011/2012 | Year of cancellation | |
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
Project work
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 non-ferrous metals (Al, Cu alloys)
Compulsory literature:
[1] Kraus, G: Steels: Heat Treatment and Processing Principles, ASM Int.,1990.
[2] Thelning, K. E.:Steels and its heat treatment, Butterworths, 1984, 678s.
Recommended literature:
[1] Porter, D. A., Easterling, K. E., Sherif, M. Y.: Phase Transformations in Metals and Alloys, 3rd edition, CRC Press, USA, 2009, 500s.
Way of continuous check of knowledge in the course of semester
Two tests.
E-learning
Other requirements
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Fundamentals and purposes of heat treatments of metallic materials; solid phase transformations and their mechanisms.
Heat treatments of steels; phase transformations in steels; TTT diagrams, IT diagrams.
Classification of steel annealing; stress relief annealing, recrystallisation annealing, spheroidising annealing; thermal cycles of annealings, final structure and properties.
Normalising; homogenising annealing; thermal cycles of annealings, final structure and properties.
Steel quenching; quenching media; hardenability and its testing; methods of cooling.
Tempering of steels – tempering stages, impact on the steel properties; internal stresses during heat treatment.
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.
Heat treatment of the special steels – corrosion resistant steels, tool steels.
Heat treatments of the cast irons; classification of the cast irons; heat treatment of grey and nodular cast irons; malleablising of the cast irons.
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