Explain and interpret phase transformations and microstructural changes occurring in metallic materials using the Iron?Carbon equilibrium diagram and TTT and CCT diagrams.
Evaluate heat treatment methods applied to steels, stainless steels, tool steels, and non-ferrous metals according to material type and desired properties, and explain their effects on microstructure and mechanical properties.
Evaluate the effects of welding thermal cycles and microstructural changes occurring in the heat-affected zone (HAZ) on material properties, and determine appropriate post-weld heat treatment (PWHT) and stress-relief methods.
Mode of Delivery
Face to face
Prerequisites
No
Recommended Optional Programme Components
None
Course Description
The Heat Treatment course covers the fundamental principles and classification of heat treatment, allotropism, heating and cooling processes, phase transformations, phase diagrams, and TTT and CCT diagrams. The course also examines heat treatment processes applied to steels, tool steels, stainless steels, and non-ferrous metals, including annealing, hardening, and surface hardening. In addition, the course addresses the welding thermal cycle, microstructural changes in the heat-affected zone (HAZ), post-weld heat treatment (PWHT), and stress relieving of welded materials.
Course Contents
WEEK
TOPICS
1st Week
Introduction to Heat Treatment: Definition, General Objectives, Principles, and Classification of Heat Treatment
2nd Week
Fundamental Concepts: Allotropic Transformations and Heating?Cooling in Heat Treatment
3rd Week
Phase (Equilibrium) Diagrams: General Concepts
4th Week
Phase Transformations and Microstructures; TTT and CCT Diagrams
5th Week
Phase Transformations and Microstructures; TTT and CCT Diagrams
6th Week
Iron?Carbon Equilibrium Diagram: Eutectic, Eutectoid, and Peritectic Transformations; Critical Temperatures
7th Week
Heat Treatments Applied to Steels: Annealing Treatments
8th Week
MIDTERM EXAMINATION
9th Week
Heat Treatments Applied to Steels: Hardening Treatments
10th Week
Heat Treatments Applied to Steels: Surface Hardening Treatments
11th Week
Heat Treatment of Tool Steels and Stainless Steels
12th Week
Heat Treatments Applied to Non-Ferrous Metals
13th Week
Welding Cycle and Microstructural Changes in the HAZ; Post-Weld Heat Treatment (PWHT) and Stress Relief
14th Week
Heat Treatment Applications in Welded Materials
Recommended or Required Reading
Teknik elemanlar için malzeme bilgisi; Dr. Öğr. Üyesi Hatice Erol Özkavak
Metallerin Isıl İşlem Teorisi ; İlya İsraloviç Noyikov (Çeviren: Prof. Dr. Galip Said)
Malzeme Bilimi ve Mühendisliği, W.D. Callister;8. Basımdan Çeviri, Nobel Yayınevi
Planned Learning Activities and Teaching Methods
Lecture
Questions/Answers
Problem Solving
Training
Assessment Methods and Criteria
Quantity
Percentage (%)
Mid-term
1
40
Total(%)
40
Contribution of In-term Studies to Overall Grade(%)
40
Contribution of Final Examination to Overall Grade(%)
