COURSE PROGRAMME FOR ENGINEERING MATERIALS
1
(short
course – 6
weeks)
I WEEK – CLASSES – 5 hours
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Introduction. Matter and materials. Engineering materials. Basic types of materials: metals, ceramics and glass, polymers. Composites. Structural charahteristics of materials. Properties of materials: chemical, physical (electric, magnetic, optical), mechanical. Technology of materials extraction, fabrication, general terms. |
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Types of chemical
bonding:
metallic,
ionic,
covalent,
Van
der Waals and Hydrogen
and
their characteristics.
Allotropy.
Melting
temperature.
Softening. |
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Crystal structure of materials, the body centered cubic (crystal) lattice. The unit cell, types of unit cells. Basic parameters of unit cells, Miller's indexing of planes and directions, principles for determination, their importance. Determining Miller's indices of planes and directions. Anisotropy. |
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Material behaviour
in
various conditions
of mechanical loading, static,
cyclic,
impact.
Stress
and
strain:
metals,
ceramics, polymers. Elastic deformation. Plastic deformation.
Hardness.
Toughness.
Short
review
on
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II WEEK – LABORATORY EXERCIZES – 5 hours
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Laboratory 33: Tensile testing |
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Laboratory 148: Hardness testing by static loading |
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Laboratory 33: Determining Young's modulus |
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Laboratory 148: Hardness testing by dynamic loading |
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Laboratory 33: Pressure testing |
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Laboratory 148: Toughness testing |
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Laboratory 33: Material fatigue |
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Laboratory 148: Creep |
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Laboratory 33: Technological testing |
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Laboratory 148: Non-destructive testing |
III WEEK – CLASSES – 5 hours
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Ideal structure
of metallic materials.
Real structure
of metallic materials.
Crystallographic defects: point
defects –
vacancies, linear
defects
–
dislocations,
surface
defects –
grain and sub-grain
boundaries,
volumetric
defects –
voids,
cracks.
Significance
of defects
and
their
effects
on material
properties. Plastic
deformation. Diffu |
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Basic terms in fracture. Theoretical cohesive force and real strength of metallic materials. Basic elements in fracture mechanics. Fracture toughness. Nil-ductile temperature. Fracture modes. Brittle fracture. Ductile fracture. Cyclic loading, types, amplitude stress, endurance strength, low-cycle stress region, high-cycle stress region, material fatigue, fatigue fracture, factors that lead to material fatigue. Time-dependent static loading at high and low temperatures. Plastic deformations, time-dependent strength, material creep, creep fracture. |
IV WEEK – LABORATORY EXERCIZES – 5 hours
Same
exercizes
as
in
the
II
week.
Student groups change
from lab 33
to lab 148,
and vice-versa.
(Note: the first lab test is arranged by the teaching assistant)
V WEEK – CLASSES + EXERCIZES – 5 hours
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Pure metals,
characteristics.
Alloys:
solid solutions,
interstitial
and supstitutional
solid solutions.
Terms that favour the creation
of
a
solid solution,
crystal
lattice,
properties. Intermetallic
compounds,
crystal
lattice,
characteristics.
Development of structural mixtures, eutectic
reaction, structural
characteristics,
properties.
Development
of
mechanical
mixtures
by solid state reactions,
eutectoid reaction, structural
characteristics,
properties. Cooling
curves.
Phase diagrams. |
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Predicting the reaction in a solid state between two
chemical elements
based on atomic sizes. Base
component, alloying element.
Cooling curves for a alloys with various fractions
of alloying elements and phase
diagrams with respect to liquidus
and solidus temperatures.
Phase diagram
types:
complete to partial solid solution,
eutectic,
phases,
alloy properties.
Applications. |
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VI WEEK – Consultations (3 hours), and final EXAM
(written part–test) (90 min.)