652-3019/01 – Plasticity of materials (PLMIng)
| Gurantor department | Department of Metallurgical Technologies | Credits | 7 |
| Subject guarantor | doc. Ing. Lenka Kunčická, Ph.D. | Subject version guarantor | doc. Ing. Lenka Kunčická, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 2 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2022/2023 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
Student will be able to identify grid disturbances, define the conditions of stress during forming, characterize the deformation of the monocrystal and polycrystal, define limit plasticity of metals, mathematically describe the stress - strain curves, analyze mathematical expression of softening processes, describe the possibility of austenite transformation during cooling steel, characterize the possibility of plastometric simulation and characterize the properties and usiabillity of progressive metallic materials.
Teaching methods
Lectures
Individual consultations
Tutorials
Experimental work in labs
Project work
Summary
The subject deals with mechanisms and mathematical description of plastic deformation, structural-forming processes taking place during hot and cold forming recpectivelly occuring during control cooling of forming products and provides a characteristic of progressive metallic materials.
Compulsory literature:
Recommended literature:
[1] KAWULOK, P., et al. Credibility of various plastometric methods in simulation of hot rolling of the steel round bar. Metalurgija. 2014, 53(3), 299-302. ISSN 0543-5846.
[2] KAWULOK, R., et al. Effect of deformation on the CCT diagram of steel 32CrB4. Metalurgija. 2015, 54(3), 473-476. ISSN 0543-5846.
Additional study materials
Way of continuous check of knowledge in the course of semester
Credit: elaboration of 4 protocols and 1 seminar work.
Exam: combined (written and oral) exam.
E-learning
Other requirements
80% attendance at seminars, elaboration of 4 protocols and 1 seminar work.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
• Crystalline structure of metals. Slipes and sliping planes - Sliping systems.
• Deffects of crystal lattice. Vacations, dislocations and their intersections, stacking faults. The stress around dislocation and energy.
• The tensity during forming, the general solution of spatial tensity.
• Limit plasticity of metals, plasticity hypothesis. Effect of tensity state on limits od plasticity. Conditions of plasticity, indicator of state of stress, determination of limits the stress states.
• Plastic deformation of monocrystall and polycrystall. The mechanism of plastic deformation. Increments of deformation stress.
• The stress - strain curves during hot and cold forming. The basic mathematical description of stress - strain curves, using of linear regression.
• Analysis of stress - strain curves controlled by dynamic softening processes.
• The kinetics of recrystallization - the Avrami equation. The influence of thermomechanical conditions on kinetics of static and dynamic recrystallization.
• The controll evolution of structure during deformation and during cooling of hot formed products.
• The austenite transformation during cooling of steels. The characteristic and possibility of usinig transformation diagrams with influence of deformation.
• The possibility aplication of plastometric simulation. The basic mathematical expression of stress and strain. Applicability to real forming processes.
• The characteristics and usiability of progressive metallic materials.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction