636-0501/01 – Metals I (KOV I)
Gurantor department | Department of Material Engineering | Credits | 3 |
Subject guarantor | doc. Ing. Stanislav Lasek, Ph.D. | Subject version guarantor | doc. Ing. Stanislav Lasek, Ph.D. |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 2 | Semester | winter |
| | Study language | Czech |
Year of introduction | 2004/2005 | Year of cancellation | 2020/2021 |
Intended for the faculties | HGF, USP | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- Define the meaning of investigations on structure and properties of technical materials;
- Characterise the crystal structure of metals and their alloys, define defects in crystals;
- Describe the fundamental mechanical tests;
- To define the basic technological tests;
- Describe the basic types of equilibrium binary phase diagrams;
- Characterise the binary diagrams in Fe-C system and classify iron based alloys;
- Outline the principles of heat treatment of metals and alloys;
- Characterisation of important non-ferrous metals and their alloys.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
The lectures offer the basic knowledges on chemical composition, structure,
properties and application of metals and alloys. First part of subject is
devoted to interatomic bonds and crystallic structure of metals. The second one
deals with influence of external forces on materials, with testing of
mechanical and technological properties of materials and is completed by
degradation processes (creep, fatigue, corrosion and wearing). Third one is
aimed at binary systems, ispecially, iron-carbon diagram, as teoretical basis
for understanding of steels a cast irons. In this field the students gain also
the knowledges about alloying, thermal treatment and properties of steels. The
next part of subject gives the informations about the non-ferrous metals
(mainly Al, Cu, Ni, Ti alloys), their properties and applications. The lectures
are extended to sintered and progressive metals, such as intermetallics, metal
glasses and composites. The last part is orientated into the materials design
according to the application purposes and sources of informations, standards
and databases. Explanation is completed by the case examples of materials in
technical practice. In connestion with lectures, the excercises have a
laboratory and control character.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Programs, tests, written assessment (see exercise)
E-learning
Sojka, J., Základy progresivních konstrukčních materiálů. VŠB-TU Ostrava, 2012, 194 s. (www.person.vsb.cz)
Other requirements
Compulsory participation in excercises, treatments of protocols for excercise by PC, support of protocols terms,
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1. Content of the course, the importance of metallic materials. Entering the literature. Basic distribution of materials, interatomic bonds. Crystallography, indexes and directions of planes.
2. Defects of the crystal lattice: points, curves and areas, their properties.
The processes of diffusion, Fick's laws. Recovery and recrystallization, related diagrams.
3. The influence of external forces on the metals, mechanical stress and deformation (elastic,plastic), Hooke's law. Tensile test.
4. Tests in compression, bending, torsion and shear. Mechanical properties
at higher temperatures, creep and relaxation. Fatigue, wear and corrosion of materials.
5. Tests of hardness testing and evaluation of notch and fracture toughness,
transition temperatures. Cracks and fractures. Technological testing, testing and diagnostics.
6. Crystallization of metals and alloys, related to thermodynamics and kinetics. Segregation, partition coefficients. Ingot structure, dendritic, polyhedric grains, stability of phases.
7. The basic types of binary diagrams, solubility and precipitation in alloys.
Phase transformations (eutectic, peritectic, eutektoid, peritektoid),
cooling curves, lever rule.
8.Metastable equilibrium and a stable iron-carbon system. Equilibrium
structure of steels and cast irons. The influence of alloying elements and impurities on the structure and properties of steels. Basics of steel production.
9.Technology of thermal treatment of steel: annealing, hardening, tempering.
Pearlite, bainite and martensite transformation of austenite. Diagrams IRA and ARA. Effect of heat treatment on properties of steels.
10. Chemical heat treatment of steels: carburizing, nitriding. Heat-
mechanical processing. Overview wrought construction and tool
steels. Cast steel, cast iron.
11. Non-ferrous alloys, especially Al, Cu, Ni, processing, properties
and use. Labelling according to alloy.
12. Other non-ferrous metals: titanium, magnesium, low-melting metals,
vysokotavitelné metals, precious metals, metalloid. Intermetallics, metal
glass. Metal composite materials.
13. Sintered Metals, advantages powder metallurgy. Production, preparation, compaction and sintering powders. Important sintered materials, porous materials,metal-ceramic materials.
14. The main principles, procedures and criteria for selecting of metallic materials. The use of standards, manuals, databases. The economic and technical aspects of material selection.
Exercise:
1.Practice, the conditions for granting credit, the safety
in laboratories. Crystal geometry - practice.
2. Tensile test and notch impact test - Program no. 1 (2-4 points).
3. Tests of hardness and technological tests - Program 2 (1-3 points)
4. Written assessment (of crystallography, testing and defectoscopy of metals).
5. Iron-carbon diagram, equilibrium structures typical of steels and cast irons, using metallographic microscope - Program No. 3 (2-4 points)
6. Selected non-ferrous metals, monitoring of the structure, grain size determination - Program No. 4 (2-4b.)
7. Test - Binary diagrams and steel. Credit.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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