Course detail
Technological Properties of Materials
FSI-WTV Acad. year: 2020/2021 Winter semester
Technological properties of materials explained, in particular, on the basis of materials problematic. The technological properties included concern metallic materials (castability, formability, weldability, and machinability). Technological properties of non-metallic materials are incorporated in courses dealing with them.
Language of instruction
Czech
Number of ECTS credits
5
Supervisor
Learning outcomes of the course unit
Knowledge and skills in assessment, influencing and application of basic technological properties of metals and alloys, especially in the choice of materials and subsequent production technologies. The ability of creative work and cooperation in specific manufacturing technology.
Prerequisites
Completion of bachelor study of "Material Engineering", basic knowledge of machining, forming, foundry and welding technologies.
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Teaching is suplemented by practical laboratory works.
Assesment methods and criteria linked to learning outcomes
Semestral examination (written exam covering the whole scope of the given problematic). Assessment based on ECTS criteria.
Aims
To provide students with information and data from the areas of castability, formability, weldability, and machinability, with primary focus on materials aspects and interactions.
Specification of controlled education, way of implementation and compensation for absences
Checking the knowledge, skills and abilities gained after the completion of individual thematic areas (protocol checking, written test, etc.).
The study programmes with the given course
Programme N-SLE-P: Foundry Technology, Master's, elective
Type of course unit
Lecture
26 hours, optionally
Syllabus
Lectures
Machinability (prof. M. Píška)
1. Definitions, decisive factors, criteria and standards of machinability
2. Groups and classes of machinability of engineering materials
3. Cutting as a dynamic process of hardening and de-hardening; dynamic recrystallization.
Plastic flow in material under high strain rate. Interaction between workpiece and tool materials
Castability (assoc. prof. J. Roučka)
4. Physical properties of the molten metals and alloys, surface tension of liquids, measurement of surface tension, influence of chemical composition of metal and temperature to the surface tension of melts.
5. Ideal and real liquid, fluid flow, turbulence in fluid flow, viscosity of molten metals and alloys, losses during fluid flow.
6. Wettability of casting molds, thermal accumulation of casting molds, penetration of metals and alloys, fluidity of melts, fludity tests, volume changes of metals and alloys during solidification.
Formability (dr. K. Podaný)
7. Physical essence of plastic deformation and hardening. Formability of metals and alloys
8. Theory of plastic deformations and principles of metal-forming
9. Conditions for the appearance of plastic deformation, analysis of deformation processes.
Weldability (assoc. prof. V. Jan, prof. R. Foret)
10. The definition of weldability. Temperature and deformation during the welding cycle. Classification of cracking during welding.
11. Structure and properties of welded joints and their heat treatment
12. Weldability of selected groups of steels and cast irons
13. Welding of selected non-ferrous alloys (aluminum, copper, nickel, titanium)
Laboratory exercise
13 hours, compulsory
Syllabus
1st Machining – kinetic learning machinability through long-term and short-term tests.
2nd Castings – technological fluiditiy tests, determination of density of metals and alloys, verification of the influence of cooling rate and atmospheric pressure on density of aluminium alloys.
3rd Forming 1
4th Forming 2
5th Evaluation of a particular weld joint (integrity, structure, hardness)
6th Weldability tests – an overview