14IIM311 - Mechanical Metallurgy

Course specification
Course title		Mechanical Metallurgy
Acronym		14IIM311
Study programme		Material Engineering
Module
Lecturer (for classes)		prof. dr Miljana Popović prof. dr Dragomir Glišić
Lecturer/Associate (for practice)		prof. dr Miljana Popović prof. dr Dragomir Glišić
Lecturer/Associate (for OTC)
ESPB		5.0	Status
Condition		Introduction to Materials Engineering	Облик условљености
The goal		Metallurgical fundamentals of mechanical and deformation behavior of metallic materials. Response of metals and alloys to applied force. Dislocation theory of plasticity. Various strengthening and softening mechanisms. Overview of the main metalworking processes and its relationship with materials microstructure and mechanical properties.
The outcome		The students will be able to understand basic principles, processing, microstructure, and mechanical and deformation behavior of metals. They will be able to understand relations between metal working processes on the one hand, and microstructure and mechanical properties on the other hand.
Contents
Contents of lectures		Mechanics of Solid State. Concept of stress and type of stresses. Strain and types of strains. Stress-strain state in two and three dimensions. Mohr’s circles. Elastic stress-strain relations. Elements of Theory of Plasticity. Maximum and Octahedral shear stresses. Tensile deformation. True stress-strain curves. Metallurgical fundamentals. Concept of Crystal Geometry. Crystallographic planes and directions. Stereographic Projection. Lattice Defects. Dislocation theory. Burger’s vector. Stress field and energy. Dislocation reactions. Deformation by slip. Critical resolved shear stress for slip. Deformation of single crystal. Deformation by twinning. Strengthening mechanisms: (i) solid solution, (ii) precipitation and (iii) strain hardening, and (iv) strengthening from grain boundaries. Types of fracture, basic mechanism of ductile and brittle fracture. Tensile and impact toughness. Recovery and recrystallization. Plastic forming of metals. Classification of forming processes. Elementary discussion of hot and cold rolling, extrusion and drawing. Relationship between technological parameters of metal working processes and properties of metallic materials.
Contents of exercises		Crystallographic planes and directions. Stereographic projection. Stress-strain analysis in uni, two and three dimensions. Volume constancy. Tensile deformation. True stress-strain curves. Strain hardening exponent. Strain rate sensitivity. Effect of temperature and strain rate on the deformation mechanisms (slip or twining). Grain size strengthening (Hall-Petch equation). Solid solution and strain hardening of Cu- and Al-alloys. Influence of time and temperature of annealing on the fraction of recrystallized structure. Tensile and impact toughness. Determination of rolling pressure (influence of roll diameter, friction). Influence of the strain rate and temperature on the extrusion pressure. Factors affecting the drawing force.
Literature
Endre Romhanji, Mehanika i metalurgija deformacije metala, TMF, Beograd, 2011. (Original title) Djordje Drobnjak, Fizika čvrstoće i plastičnosti, TMF, Beograd, 1986. (Original title) M. Pešić, B. Mišković, V. Milenković, Prerada metala u plastičnom stanju, TMF, 1989. (Original title) S. Kalpakjian, Manufacturing Processes for Engineering Materials, 3rd ed., Adison Wesley Longman, Menlo Park CA 94025, 1997. (Original title) G.E.Dieter, Mechanical Metallurgy, Mc Graw-Hill Book Co., London, 1988. (Original title)
Number of hours per week during the semester/trimester/year
Lectures	Exercises	OTC	Study and Research	Other classes
2	1	1
Methods of teaching		Lectures, presentations, animations and experimental work
Knowledge score (maximum points 100)
Pre obligations		Points	Final exam	Points
Activites during lectures			Test paper
Practical lessons		20	Oral examination	50
Projects
Colloquia		30
Seminars