Materials Science

Major: Thermal Power Engineering
Code of subject: 6.144.00.O.018
Credits: 5.00
Department: Department of Materials Science and Engineering
Lecturer: Ph.D., Associate Professor Lidiya Bohun
Semester: 3 семестр
Mode of study: денна
Learning outcomes: As a result of studying the academic discipline, the student should be able to demonstrate the following learning outcomes: 1. guided by state and industry standards and regulations, with the help of relevant rules and reference information, in the process of preparing for control, be able to determine the main mechanical properties of materials; 2. knowledge of the peculiarities of the composition, structure, mechanical, physical and technological properties of various groups of materials used in high-temperature technology; 3. predict the influence of various factors on the structure and properties of structural materials; 4. evaluate the behavior of materials during the operation of products; 5. prescribe heat treatment of materials in order to promote a complex of properties and optimal structure, which would ensure reliable and long-term operation of products in operating conditions; 6. using the results of mechanical tests, with the help of regulatory and technical documentation, in the conditions of a mechanical laboratory, establish the compliance of the mechanical properties of the material with the requirements; 7. using drawings and information about the working conditions of the product, with the help of reference literature, in the process of designing the product, determine the possibility and expediency of replacing traditional materials with modern non-metallic, composite, powder and coated materials; 8. apply knowledge about structural materials for the purpose of rational selection of materials for their manufacture, taking into account the conditions of operation of products and units of power plants, ensuring their reliable and long-term operation. 9. competently make technical decisions to ensure high performance of high-temperature equipment; 10. justify the choice of methods of strengthening materials for the most effective use in high-t UM 1 – apply knowledge and understanding to identify, formulate and solve technical problems of the specialty, using known methods;emperature technology
Required prior and related subjects: Mathematics Physics Theoretical foundations of heat engineering Engineering and computer graphics General electrical engineering Chemistry Technical mechanics and design basics Heat and mass exchange Hydrogas dynamics Technical thermodynamics
Summary of the subject: Introduction. Course subject and its meaning. Structure and properties of metals. Types of crystal lattices. Anisotropy of properties. Polymorphism of metals. Defects in the crystalline structure of metals. Crystallization of metals and alloys. Energy conditions, mechanism and kinetics of the crystallization process. Structure of a steel casting. Types of interaction of elements in alloys. Phase equilibrium diagrams of binary alloys. Relationship between the type of phase equilibrium diagram and physical-mechanical and technological properties of alloys. Kurnakov's rule. Phase equilibrium diagram of iron-carbon alloys. Main phases and structural components. Fe-Fe3C diagram. Transformation in alloys of different chemical composition. Carbon steels, their structure, properties, marking, application. White and machine-building cast iron, their classification, structure, properties, marking and application. Theory of heat treatment of steel: general information, transformation into steel during heating and during cooling, main types of heat treatment of steel. Heat treatment practice. Classification of heat treatment types. Annealing and normalization. Hardening, hardenability and hardenability of steel. Letting go and aging. Structures and properties of steel after various types of heat treatment. Defects formed during heat treatment. Surface treatment of steel. Carburizing, nitriding, nitrocementing, sputtering, surfacing, ion implantation, laser treatment, etc. Classification and marking of alloy steels. Chemical composition, structure, properties, application of structural alloyed steels: improveable, high-strength, heat-resistant, heat-resistant, bearing, corrosion- and radiation-resistant. Copper and its alloys, classification of alloys. Chemical composition, structure, properties, application of simple and special brasses and bronzes. Aluminum and alloys based on it, classification of alloys. Features of heat treatment of aluminum alloys. Chemical composition, structure, properties. Chemical composition, structure, properties, application of titanium and magnesium and alloys based on them. Application of refractory metals. Atomic energy materials. Structural powder materials: antifrictional and frictional, filters. Instrumental hard alloys and ceramic materials. General characteristics of plastic masses. Layered, thermoset, thermoplastic and gas-filled plastics.
Assessment methods and criteria: Procedure and criteria for assigning points and grades. The task of current control is to systematically check the understanding and assimilation of the program material, the performance of laboratory work, the ability to independently work out the writing of a report, abstract, the ability to present certain material publicly, in writing or in electronic format. The preparation, execution and defense of reports on laboratory work are assessed with 2 points for a group laboratory and 4 points for work performed on an individual assignment. The task of the final examination control is a final check of the depth of the student's assimilation of the program material of the discipline, the logic and relationships between its individual sections, the ability to creatively use the acquired knowledge; the ability to form one's attitude to a certain professional problem arising from the content of the educational component, etc. Evaluation of oral and written test tasks of examination control depends on the form of the test task: 1. the correct version of the answer to the closed test tasks of the first level of difficulty with one correct answer is evaluated as 4 points, the incorrect one - 0 points. There can be no intermediate assessment for these tasks; 2. correct answers to the closed test tasks of the second and third levels of difficulty with the choice of several correct answers, for matching, nested answers, missing words and the correct sequence, which, depending on the difficulty, are estimated at 7...10 points. The criteria for evaluating answers and completing tasks are: • complete disclosure of the issue; • integrity, systematicity and reasoning; • logic of presentation, speech culture; • analytical reasoning, ability to make comparisons, conclusions; • accuracy of written work. Evaluation of the student's learning results is carried out according to a 100-point scale
Recommended books: 1. В. Попович, В. Попович. Технологія конструкційних матеріалів і матеріалознавство. Підручник. — Львів: Світ. 2006. — 623 С. 2. Кузін О.А., Яцюк Р.А. Металознавство та термічна обробка металів. Підручник. — Львів: Афіша. 2002. — 304 с. 3. Металознавство: Підручник. / О.М. Бялік, В.С. Черненко, В.М. Писаренко, Ю.Н. Лахтин Ю.М., Леонтьева В.П. Материаловедение. — М.: Машиностроение, 1990. — 528 с. 4. Конструкційні та функціональні матеріали: Навч. Посібник: У 2 ч. — К.: Техніка, 2003. — 4.1: Основи фізики твердого тіла. Конструкційні матеріали. /В.П. Бабак, Д.Ф. Байса, В.М. Різак, С.Ф. Філоненко. — 344 с. 5. Махорт А.В., Чумак М.Г. Термічна обробка металів: Навч. посібник. — К.: Либідь, 2002. — 512 с 6. Попович В. Технологія конструкційних матеріалів та матеріалознавство: Навчальний посібник для вищих навчальних закладів: у 2-х кн. Книга II, - Суми: ВТД "Університетська книга", 2002. — 260 с. 7. Попович В. Технологія конструкційних матеріалів та матеріалознавство: Навчальний посібник для вищих навчальних закладів: у 2-х кн. Книга 1 (Частина І, II і III). -Львів, 2002. — 264 с. 8. Технологія конструкційних матеріалів. /М.А.Сологуб, І.О.Рожнецький, О.І.Некоз та ін. // Під ред. М.А.Сологуба. — 2 вид., виправ, та доп.: Підручник для студентів механічних спеціал. Вищих навч. закл. — К.: Вища шк., 2001. — 274 с. 9. Туляков Г.А., Скоробагатых В.Н., Гриневский В.В. Конструкционные материалы для знергомашиностроения. — М.: Машиностроение, 1991. —238 с.