COURSE INFORMATON
Course Title Code Semester L+P Hour Credits ECTS
Materials Science II ME   208 4 3 3 5

Prerequisites and co-requisites
Recommended Optional Programme Components None

Language of Instruction Turkish
Course Level First Cycle Programmes (Bachelor's Degree)
Course Type
Course Coordinator Prof.Dr. Melih BAYRAMOĞLU
Instructors
Prof.Dr.MELİH BAYRAMOĞLU1. Öğretim Grup:A
Prof.Dr.MELİH BAYRAMOĞLU2. Öğretim Grup:A
 
Assistants
Goals
to introduce the students to the basic principles heat treatment applied to steels and use them to obtain required propertis in steels for design and maufacturing purposes.
Content
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.

Learning Outcomes
1) Understand the basic principles of phase diagrams and use them in thermal processing of steels
2) Understand hardenability, how to measure it and how to analyse and interpret hardenabiliy for heat treatment and design applications problems
3) Understand the effect of alloying elements on hardenability of steels
4) Interpret the relationship between the microstructure and properties of steels
5) Understand the formation of microstructures during heating and different cooling rates
6) Understand the effect of heat treatment parameters on final structure and properties
7) Be able to select an appropriate heat treatment according to a specific requirements
8) Interpret the properties to obtained according to the heat treatment processes
9) Understand how to obtain different properties at different locations
10) Understand formation residual stresses and how to eliminate or minimize them during
11) Prepare a speciemen for metallographic examination
12)
13)
14)
15)


Course's Contribution To Program
NoProgram Learning OutcomesContribution
12345
1
Student become equipped with the basic knowledge of math, science and engineering
X
2
Students gain a command of basic concepts, theories and principles in mechanical engineering
X
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
4
Students become equipped with a variety of skills and knowledge regarding engineering techniques
X
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.
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
X
7
Students take initiative in identification, design, development and use of a product or production process.
X
8
Students become aware of the necessity of lifelong learning and continuously self-renew
X
9
Students use English effectively for technical or non-technical topics orally or in wirtten form.
X
10
Students become effective in using computer, computer-aided drafting, design, analysis, and presentation
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
X
12
Students become aware of the technical and ethical responsibilities, as well as being inquisitive and innovative
X

Course Content
WeekTopicsStudy Materials _ocw_rs_drs_yontem
1 The Transformations and Crystal Structures of Iron Lecture notes and references
2 The Iron Carbon Equilibrium Diagram. Slow heating and cooling of plain carbon steels Lecture notes and references
3 Time-Temperature-Transformation (TTT) Diagrams. Continuos cooling diagrams Lecture notes and references
4 Hardenability. The Jominy end quench hardenability test. Practical applications of Jominy Curves Lecture notes and references
5 Introduction to heat treatments. Austenizing. Spheroidizing Annealing. Recyrstallization Annealing Lecture notes and references
6 Stress Relief Annealing. Full Annealing. Normalizing Lecture notes and references
7 Hardening (Quenching). Heating Media. Rate of Heating. Hardening Temperature. Holding time at temperature Lecture notes and references
8 Mid-Term Exam Lecture notes and references
9 Direct Quenching to Martensite. Martempering. Austempering. Tempering Lecture notes and references
10 Surface Hardening of Steel. Carburizng and heaet treatments applied after carburizing Lecture notes and references
11 Selective Heating; Flame Hardening, Induction Hardening, Laser beam hardening, Electron beam hardening Lecture notes and references
12 The role of design in the heat treatment of steel and residual stresses Lecture notes and references
13 Case studies; Problems related to heat treat treatments and their elimination Lecture notes and references
14 Metallography Lecture notes and references
15 Practice for sample preparation and optical micoscopy Lecture notes and references
16-17 Term Exams Lecture notes and references

Recommended or Required Reading
Textbook
Additional Resources