633-0902/02 – Metal Plasticity (PLKD)
| Gurantor department | Department of Materials Forming | Credits | 10 |
| Subject guarantor | prof. Ing. Jiří Kliber, CSc. | Subject version guarantor | prof. Ing. Jiří Kliber, CSc. |
| Study level | postgraduate | Requirement | Choice-compulsory |
| Year | | Semester | winter + summer |
| | Study language | Czech |
| Year of introduction | 1999/2000 | Year of cancellation | |
| Intended for the faculties | FMT | Intended for study types | Doctoral |
Subject aims expressed by acquired skills and competences
expres in numbers deformation single crystal and polycrystal, show plastic deformation maps, identify grid disturbances , characterize state of stress and strain, analyze mathematical formulation of restoration processes
Teaching methods
Individual consultations
Summary
Lattice imperfection. Plastic characteristics dislocation. Set single crystal. Strain hardening of material. Dynamic recovery and recrystallization. Static, dynamic and post - dynamic processes and their kinetics. Diffusion mechanism of plastic deformation. Deformation maps. Boundary plasticity: diction and influence decisive parameters. Superplasticity. State of stress and strain. Plastometric examination. Simulation of forming technologies.
Compulsory literature:
[1] May, I. L.: Principles of Mechanical Metallurgy. New York, Elsevier, 1981
[2] Kolmogorov, B. L.: Plastičnost i rozrušenije. Moskva, Metallurgija, 1986
[3] Honeycombe, R. W. K. The Plastic Deformation of Metals , 2d ed., Edward Arnold, London (1984).
Recommended literature:
[1] Chakrabarty, J. Theory of plasticity. Third edition published by Elsevier Butterworth-Heinemann, 2006, ISBN-10: 0-7506-6638-2.
[2] Lubliner, J. Plasticity theory, Mc Milan, 1990.
Individual movement of foreign literature toward to diploma work theme
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
elaboration of semester project
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
• Crystallic construction metals. Directions and plane of slip - slippage systems. Lattice imperfection. Vacancy.
• Dislocation, their intersection. Stacking faults. Tension round dislocation and energy. Set single crystal. Athermic and thermal component shear deformation tension.
• Plastic deformation of polycrystalline. Increases incurred of grain boundary, alloying elements and precipitate.
• Stress- strain curve. Primary objective mathematical descriptions. Calculations by the help of linear regression analysis. Determination constant k in Hollomon equation and energy of deformation.
• Analysis stress-strain curve by dynamic restoration according to Sellars. Other analysis (pull - up play - new dislocation, movement jumps spiral dislocation. Garofalo application. Procedure assessment constants, especially activation energy.
• Analysis curves controlled by dynamic recrystallization.
• Mathematical theory of recrystallization kinetics Avrami equation. Adjustment Avrami equation.
• Plastometric simulation. Primary objective manners and mathematical formulation tension and deformation. Application on real forming processes.
• Influence deformation conditions on kinetics of dynamic recrystallization. Static recrystallization after plastic deformation at hot condition. Influence thermometric conditions on kinetics of static recrystallization. Base conditions phenomenon super - plasticity.
• Diffused mechanism of plastic deformation, influence time and relaxation constant on form resulting equation. Diffusion flow of metal. Boundary plasticity – fracture. Work for creation of crack. Breakable rapture with plastic zone.
• Mechanical maps of fracture.
• Boundary plasticity metals. Manners mathematical formulation. Engineering materials and their characteristics - Ashby maps.
• Indicator of state of stress - Kolmogorov. Influence second and third tensor state invariant of stress. Boundary stress according to Mohr. Triaxial state of stress - revolving paraboloid.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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