636-2002/04 – Materials Science (NOM)
| 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 | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Student is able to:
- Explain the principal concepts of thermodynamics and their importance in materials study;
- Outline basic processes – solidification and solid phase transformations – in one-component systems;
- Differentiate the behaviour of two-component systems and describe eutectic, eutectoid, peritectic and peritectoid reactions;
- Analyse more complicated binary systems and binary systems with intermediate phases;
- Outline the behaviour of both metastable and stable iron – carbon system and deduce properties of typical alloys.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
Thermodynamic principles of solid substances; one-component systems ; binary systems – eutectic, eutectoid, peritectic, peritectoid reaction; systems with intermediate phases; iron – carbon system.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Continuous verification of learning outcomes:
full-time study form - 2 written tests, 2 written programs during the semester;
combined study form - 1 semestral project.
Final verification of study results: written exam.
E-learning
LMS Moodle
Other requirements
There are no further requirements.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1. Internal structure of solids, imperfections of crystal structure.
2.-3. Principles of thermodynamics of solids; systems; components; phases; equilibrium vs non-equilibrium state of thermodynamic systems; Gibbs phase law; one-component system, solidification, nucleation of solid phase (stable vs unstable nucleus), homogeneous vs heterogeneous nucleation, phase transformation in solid state.
4.-7. Two-component system and their binary diagrams; basic kinds of binary systems – system with an unlimited solubility in solid state, system with eutectic, peritectic reaction, system with eutectoid, peritectoid reaction.
8. Complex two-component systems comprising phase transformations in solid state and the presence of intermediate phases.
9.-11. Iron – carbon system; metastable, stable diagram; principal reactions; phase and structure description of metastable Fe-C diagram; basic structure constituents in metastable system Fe-C; calculation of phase composition in metastable Fe-C system.
12. Stable system Fe-C, differences to metastable system; graphite containing cast irons; classification, principal characteristics.
13. Phase transformations of austenite at cooling – diffusion, difusionless transformations; characteristics of bainite and martensite.
14. Application of Fe-C diagram in heat treatment of steels.
Exercises:
1. Introductory exercises - syllabus, credit conditions, safety training, basics of metallography (theory).
2. Basics of metallography - sample preparation (grinding, polishing, etching - principles), metallographic microscopes (principle, magnification, resolution).
3. Basic mechanical tests - tensile test, hardness tests, impact test in bending according to Charpy (principle, samples, evaluation).
4. Basics of crystallography - drawing directions and planes in a cubic lattice, calculation of angles between directions and planes - PROGRAM No. 1 (6 points).
5. Description of basic binary diagrams, cooling curves (diagrams with eutectic and eutectoid transformation).
6. Basic binary diagrams - calculation of phase shares and structural components using the lever rule.
7. More complex types of binary diagrams - PROGRAM No. 2 (6 points).
8. Evaluation of binary alloy samples - binary diagram application, microstructure (silumins, brass, bronzes).
9. TEST 1 (8 points), metastable Fe-C diagram, cooling curves.
10. Metastable diagram Fe-C - calculations of the share of structural components.
11. Preparation of metallographic cutting of steel, observation of microstructure of steels with different carbon content.
12. Determination of phase fraction by point method, evaluation of C content, determination of steel grain size (activity 2 points).
13. Stable diagram of Fe-C, microstructure of cast iron (comparison of white and graphite);
14. TEST 2 (8 points), credits.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction