COURSE UNIT TITLE

: WELDING METALLURGY

DEGREE PROGRAMMES

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
MMM 4021 WELDING METALLURGY ELECTIVE 3 0 0 4

Offered By

Metallurgical and Materials Engineering

Level of Course Unit

First Cycle Programmes (Bachelor's Degree)

Course Coordinator

ASISTANT PROFESSOR BAHADIR UYULGAN

Offered to

Metallurgical and Materials Engineering

Course Objective

Help students to develop a security awarness for welding. Introduce the weld-related terminology and present tools and instruments for welding and cutting. Introduce types of welding techniques including to describe welding conditions and the likely problems encountered during welding. Evaluate the termal input at and around weld seem. Changes in internal structures around weld seem, introduce weld defects and take the necessary measures to prevent them from happening.

Learning Outcomes of the Course Unit

1   Understand physical, chemical and metallurgical principles of various welding processes.
2   Understand the places of implementation and environments for various welding processes.
3   Describe the weldability of metals and alloys and interpret their welding environment.
4   Understand and interpret the microstructure and texture occuring at and around weld seem for similar and dissimilar single and multiphasic alloys.
5   Understand heat cycle, residual stresses and deformation at and around the weld.
6   Discuss and argue the cause of weld defects and understand how these defects can be detected by the destructive and non-distructive methods.
7   Understand the metallurgical changes during solidification of weld metal depending on heat input and cooling regimes.
8   Understand the importance of post and preoperative processes required for a sound and better bonding.

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 Introduction to welding. Comparesson with other manufacturing processes. Gas flame welding and cutting.
2 Electric arc welding; Arc and current caracteristics, welding machines end electrodes.
3 Shielded metal arc welding, gas metal arc welding; welability of various metals and alloys.
4 Solid state welding: Cold weld, diffusion welding, friction and electric resistance welding.
5 High energy beam welding: Laser beam welding and electron beam welding.
6 Weld seem metallurgy: Single and biphasic materials, different materilas, metallurgic regiongs and heat affected zones.
7 1st Interm Exam
8 Cooling at heat affected zone: Effect of carbon equivalent on cooling behaviour.
9 Termal and thermochemical inspection of weld: Heat cycle behaviour at and around weld seem and heat dissipation.
10 Metallographic and and microstructural inspection of weld, residual stresses and deformation around the weld seem.
11 Formation of weld pool: Factors effectingthe chemical composition of weld metal, variations in chemical composition at and around weld pool.
12 Variations in chemical composition at fusion boundary.
13 2nd Interm Exam
14 Detection of weld defects: Distractive and non-distractive methods.

Recomended or Required Reading

Textbook(s):
Lecture notes

Supplementary Book(s):
Fundamentals of Welding Metallurgy, Henry Granjon, Abington Publishing,185573 0197, Cambridge,1991.

Planned Learning Activities and Teaching Methods

Oral and visual lecture presentation, discussions and conceptual interpretation regarding to subjects included in course content

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 MTE1 MIDTERM EXAM 1
2 MTE2 MIDTERM EXAM 2
3 QUZ QUIZ
4 FIN FINAL EXAM
5 FCG FINAL COURSE GRADE MTE1 * 0.20 + MTE2 * 0.20 + QUZ * 0.10 + FIN * 0.50
6 RST RESIT
7 FCGR FINAL COURSE GRADE (RESIT) MTE1 * 0.20 + MTE2 * 0.20 + QUZ * 0.10 + RST * 0.50


Further Notes About Assessment Methods

All student examinations and assignments are corrected and checked by the instructor. Inadequacy discovered by the instructor during checking exam papers will be pointed out to students.

Assessment Criteria

Students performances will be assessed by midterm and final exams according to Learning Objectives LO1, LO2, LO3, LO4, LO5, LO6, LO7, LO8, LO9 and LO10.

Language of Instruction

Turkish

Course Policies and Rules

Lecture presentation will be provided in class room in line of the course content and discussion regarding topics presented will be held. Problem solving will be presented
in relation to the appropriate subjects included in curriculum.

Contact Details for the Lecturer(s)

Prof. Dr. Ahmet ÇAKIR
Dokuz Eylül University, Faculty of Engineering,
Metalurgical and Materials Engineering
Tınaztepe Campus, 35160 Buca / IZMIR
Tel+90 232 3017480
ahmet.cakir@deu.edu.tr

Office Hours

On Mondays btw. 09:00-10:00 am

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 12 3 36
Preparations before/after weekly lectures 12 2 24
Preparation for final exam 1 6 6
Preparing assignments 2 5 10
Preparation for midterm exam 2 5 10
Midterm 2 2 4
Final 1 2 2
TOTAL WORKLOAD (hours) 92

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7PO.8PO.9PO.10PO.11PO.12
LO.1443
LO.23432
LO.334332
LO.444
LO.5334
LO.6443
LO.7324
LO.844333

CONTACT INFORMATION
Dokuz Eylül Üniversitesi Cumhuriyet Bulvarı No: 144 35210 Alsancak / İZMİR
Phone: +90(232) 412 12 12 - Fax: +90 (232) 464 81 35

Copyright 2015 DEÜ. BİD

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