652-0912/01 – Plasticity and structure-forming processes at metal forming (PLSPhD)
| Gurantor department | Department of Metallurgical Technologies | Credits | 10 |
| Subject guarantor | doc. Ing. Lenka Kunčická, Ph.D. | Subject version guarantor | doc. Ing. Lenka Kunčická, Ph.D. |
| Study level | postgraduate | Requirement | Choice-compulsory type B |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
Student will know how to study and mathematically describe the basic deformation mechanisms, plastic properties and structure-forming processes related to hot/cold forming and acting in the course of free or controlled cooling of the formed products. Student will be able to apply this knowledge at optimization and control of structural and mechanical properties of the bulk formed material.
Teaching methods
Lectures
Individual consultations
Summary
Subject provides comprehensive theoretical and technological knowledge about the progressive processes of flat and long products rolling, including hot and cold processing. Attention is also paid to the structure-forming processes related to hot/cold forming and acting in the course of free or controlled cooling of the formed products.
Compulsory literature:
Recommended literature:
Way of continuous check of knowledge in the course of semester
Oral exam with written preparation, essay on assigned topic.
E-learning
Other requirements
Elaboration of essay based on foreign language literature.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Crystalline structure of metals, lattice defects, sliding systems in steels and alloys of non-ferrous metals.
Role of dislocations and stacking fault energy at plastic deformation-
Dislocation/diffusion mechanisms of plastic deformation, conditions for superplasticity.
Plastic deformation of polycrystal, several strengthening constituents.
Stress-strain curve, basic mathematical descriptions, calculation of the critical strain using Hollomon equation.
Analysis and prediction of stress-strain curves influenced by dynamic softening processes.
Determination of the hot forming activation energy – methodology.
Mathematical description of the recrystallization kinetics, adjustment of Avrami equation.
Boundary state of stress, plasticity limit, state of stress indicator, maps of fracture mechanisms.
Possibilities of influencing the structure-forming processes in the course of hot forming and final cooling.
Methodology of the transformation diagrams, effect of the previous deformation on (D)CCT diagrams.
Physical optimization simulations of the conventional and controlled methods of bulk forming.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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