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Course Description Course Name : Materials Science II Course Code : ME 208 Course Type : Compulsory Level of Course : First Cycle Year of Study : 2 Course Semester : Spring (16 Weeks) ECTS : 5 Name of Lecturer(s) : Prof.Dr. MELİH BAYRAMOĞLU Learning Outcomes of the Course : Understands the basic principles of phase diagrams and uses them in thermal processing of steels Understands hardenability, how to measure it and how to analyse & interpret hardenabiliy for heat treatment and designs application problems Understands the effect of alloying elements on hardenability of steels Interprets the relationship between the microstructure and properties of steels Understands the formation of microstructures during heating and different cooling rates Understands the effect of heat treatment parameters on final structure and properties Is able to select an appropriate heat treatment according to specific requirements Interprets the properties to be obtained according to the heat treatment processes Understands how to obtain different properties at different locations Understands formation residual stresses and how to eliminate or minimize them during heat treatment Has the necessary fundamental knowledge about metalographic investigation and how to perform it Mode of Delivery : Face-to-Face Prerequisites and Co-Prerequisites : None Recommended Optional Programme Components : None Aim(s) of Course : To introduce the students to the basic principles of heat treatment applied to steels and use them to obtain required propertis in steels for design and maufacturing purposes. Course Contents : The transformation and crystal structures of iron. The iron-carbon equilibrium diagram. Time-Temperature Transformation (TTT) diagrams. Formation of pearlite. Formation of bainite. Formation of martensite. Hardenability. Heat treatment of steel. Annealing processes. Hardening. Heating media. Rate of heating. Hardening temperature. Holding time. Methods of cooling; direct quenching to martensite, martempering, austempering. Quenching media; water, brine, oil, air. Tempering. Surface hardening of steel; flame hardening, induction hardening, carburising, nitriding. The role of design in the heat treatment of steel and residual stresses. Language of Instruction : English Work Place : Classroom   Course Outline /Schedule (Weekly) Planned Learning Activities Week Subject Student's Preliminary Work Learning Activities and Teaching Methods 1 The Transformations and Crystal Structures of Iron Read the related subject from lecture notes Lecturing and discussions 2 The Iron Carbon Equilibrium Diagram. Slow heating and cooling of plain carbon steels Read the related subject from lecture notes Lecturing and discussions 3 Time-Temperature-Transformation (TTT) Diagrams. Continuos cooling diagrams Read the related subject from lecture notes Lecturing and discussions 4 Hardenability. The Jominy end quench hardenability test. Practical applications of Jominy Curves Read the related subject from lecture notes Lecturing and discussions 5 Introduction to heat treatments. Austenizing. Spheroidizing Annealing. Recyrstallization Annealing Read the related subject from lecture notes Lecturing and discussions 6 Stress Relief Annealing. Full Annealing. Normalizing Read the related subject from lecture notes Lecturing and discussions 7 Hardening (Quenching). Heating Media. Rate of Heating. Hardening Temperature. Holding time at temperature Read the related subject from lecture notes Lecturing and discussions 8 Midterm exam Read the related subject from lecture notes and references Written examination 9 Direct Quenching to Martensite. Martempering. Austempering. Tempering Read the related subject from lecture notes Lecturing and discussions 10 Surface Hardening of Steel. Carburizng and heaet treatments applied after carburizing Read the related subject from lecture notes Lecturing and discussions 11 Selective Heating; Flame Hardening, Induction Hardening, Laser beam hardening, Electron beam hardening Read the related subject from lecture notes Lecturing and discussions 12 The role of design in the heat treatment of steel and residual stresses Read the related subject from lecture notes Lecturing and discussions 13 Case studies; Problems related to heat treat treatments and their elimination Read the related subject from lecture notes Lecturing and discussions 14 Metallography Read the related subject from lecture notes Lecturing and discussions 15 Practice for sample preparation and optical micoscopy Read the related subject from lecture notes Lecturing and discussions 16/17 Final exam Study all subjects from lecture notes and reference books Written examination   Required Course Resources Resource Type Resource Name Recommended Course Material(s)  ME 208 Lecture Notes Required Course Material(s)  Steel and its Heat Treatment by Karl-Erik Thelning  Materials and Processes in Manufacturing by E. Paul Degarmo, J.Temple Black and Ronald A. Kohser  Principles of Material Science and Engineering by William F. Smith  The Science and Design of Engineering Materials by J. P. Schaffer, A. Saxena, S.D. Antolovich, T. H. Sanders and S. B. Warner   Assessment Methods and Assessment Criteria Semester/Year Assessments Number Contribution Percentage     Mid-term Exams (Written, Oral, etc.) 1 100     Homeworks/Projects/Others 0 0 Total 100 Rate of Semester/Year Assessments to Success 40   Final Assessments 100 Rate of Final Assessments to Success 60 Total 100   Contribution of the Course to Key Learning Outcomes # Key Learning Outcome Contribution* 1 Students gain a command of basic concepts, theories and principles in mechanical engineering 4 2 Student become equipped with the basic knowledge of math, science and engineering 3 3 Students are able to design and carry out experiments in the basic fields of mechanical engineering, and interpret the results and the data obtained from the experiments 0 4 Students become equipped with a variety of skills and knowledge regarding engineering techniques 2 5 Students are able to design a system, component or process in order to meet the needs of various engineering problems within technical, economic, environmental, manufacturability, and sustainability limits. 0 6 Students independently review and learn the applications in an enterprise, make a critical assessment of the problems faced with, formulate problems and propose solutions by selecting the proper technique 4 7 Students take initiative in identification, design, development and use of a product or production process. 3 8 Students become aware of the necessity of lifelong learning and continuously self-renew 5 9 Students use English effectively for technical or non-technical topics orally or in wirtten form. 5 10 Students become effective in using computer, computer-aided drafting, design, analysis, and presentation 0 11 Students have good communicatino skills with a tendency to work in teams, and are able to work effectively as a member of an interdisciplinary team 2 12 Students become aware of the technical and ethical responsibilities, as well as being inquisitive and innovative 3 * Contribution levels are between 0 (not) and 5 (maximum).   Student Workload - ECTS Works Number Time (Hour) Total Workload (Hour) Course Related Works     Class Time (Exam weeks are excluded) 14 3 42     Out of Class Study (Preliminary Work, Practice) 14 4 56 Assesment Related Works     Homeworks, Projects, Others 0 0 0     Mid-term Exams (Written, Oral, etc.) 1 10 10     Final Exam 1 15 15 Total Workload: 123 Total Workload / 25 (h): 4.92 ECTS Credit: 5