Course Name Code Semester T+U Hours Credit ECTS
Weldability Of Materials MTE 305 5 2 + 0 2 3
Precondition Courses
Recommended Optional Courses
Course Language Turkish
Course Level Bachelor's Degree
Course Type Compulsory
Course Coordinator Prof.Dr. HÜSEYİN UZUN
Course Lecturers
Course Assistants None
Course Category
Course Objective This course provides how to establish the weldability of metals, the weldability of steels, stainless steels, abrasion-resistant high strength steels, boilers-welded steels, fine grain steels, hot work and alloyed cold work tool steels and cast irons. Topics presented include regions of fusion and solid-state welds, weld solidification, HAZ phenomena, the mikrohardness and microstructural characterization of weld region.
Course Content Definition of weldability of metals. The factors affected on the weldability of metals. The weld thermal cycles, temperature distributions of weld. The phase transformations during the cooling and heating of the weld metal in steels. Regions of a fusion weld, Regions of a solid-state weld, Weld solidification principles, The weld fusion boundary and unmixed zone, The partially melted zone of the HAZ, The heat affected zone. The weldability of steels and weld region of steels. Transformation during cooling, the base metals carbon equivalent, the definition of preheat temperature. The weldability of fine grain steels, boilers-welded steels, hot work and alloyed cold work tool steels, abrasion-resistant high strength steels, cast irons and weld defects, stainless steels and weld defects. Definition of Schaeffler, De Long and WRC diagrams.
# Course Learning Outcomes Teaching Methods Assessment Methods
1 To be able to question the fundamental concepts of the weldability of metals Lecture, Demonstration, Testing, Oral Exam, Homework,
2 To be able to distinguish the factors affected on the weldability of metals. Demonstration, Lecture, Homework, Oral Exam, Testing,
3 To be able categorize the different welding methods according to heat source. Lecture, Demonstration, Testing, Homework, Oral Exam,
4 To be able categorize the different regions of a solid-state weld in common engineering alloys. Demonstration, Lecture, Oral Exam, Homework, Testing,
5 To be able to question the fundamental concepts of heat flow and temperature distributions in welding. Lecture, Demonstration, Testing, Homework, Oral Exam,
6 To be able to relate to the casting principles with the fundamental concepts of weld solidification in steels. Demonstration, Lecture, Oral Exam, Homework, Testing,
7 To be able categorize the phase transformations during the cooling and heating of the weld metal in steels. Lecture, Demonstration, Testing, Oral Exam, Homework,
8 To be able to analysis the various metallurgical reactions that give rise to a heat-affected zone in steels according to weldability affected factors Demonstration, Lecture, Homework, Oral Exam, Testing,
9 To be able categorize the stage of the preheat and post heat of steels, abrasion-resistant high strength steels, boilers-welded steels and fine grain steels Lecture, Demonstration, Testing, Oral Exam, Homework,
10 To able to propose the suitable welding for stainless steels according to weldability of stainless steel Demonstration, Lecture, Homework, Oral Exam, Testing,
11 To be able to calculate the preheat temperature for steels.
Week Course Topics Preliminary Preparation
1 Definition of weldability of metals. The factors affected on the weldability of metals.
2 The weld thermal cycles, temperature distributions of weld
3 The phase transformations during the cooling and heating of the weld metal in steels
4 Regions of a fusion weld, Regions of a solid-state weld, Weld solidification principles, The weld fusion boundary and unmixed zone, The partially melted zone of the HAZ, The heat affected zone
5 The weldability of steels and weld region of steels.
6 Transformation during cooling, the base metals carbon equivalent, the definition of preheat temperature.
7 The weldability of fine grain steels and weld defects
8 The weldability of boilers-welded steels
9 The weldability of hot work and alloyed cold work tool steels
10 The weldabilty of abrasion-resistant high strength steels
11 The weldability of cast irons and weld defects.
12 The weldability of stainless steels and weld defects
13 Definition of Schaeffler, De Long and WRC diagrams. The effects of elements on chromium equivalent and nickel equivalent.
14 Case studies about Schaeffler, De Long and WRC diagrams and solving examples
Resources
Course Notes
Course Resources
Order Program Outcomes Level of Contribution
1 2 3 4 5
1 Students gain an advanced and contemporary knowledge and practical skill after general or vocational high school qualification. To obtain an ability to support his/her knowledge and practical skill with technical sources and equipments and to use basic and principle technical terminology of metal technologies. Student gain an insight to the subject to analyze, discuss, evaluate and bring about solutions for the problems in metal technologies and related teaching subjects. He/She gains an ability to solve problems in metal technologies using general and foundational since and knowledge. X
2 Student can gather and use data to solve well defined problems on metal technology subjects. He/She can efficiently use his or her practical and knowledge skills in practical applications. Students know general definitions of engineering drawing subject; he/she can read engineering drawings in metal technologies and also can design using computer programs. Students are familiar to measuring equipments used in metal technologies he/she has knowledge and practice to use and maintenance of measuring equipments.
3 Students know manufacturing processes in metal technologies sectors and can offer improvements when needed. He/she has knowledge of quality control processes and has practical skill to use quality control in metal manufacturing processes.
4 To gain theoretical and practical skills in joining of metallic materials, implementing quality control in welded structures and to give training on these subjects. X
5 To obtain an adequate theoretical knowledge and practical skills on oxy-gas, electric arc welding and brazing techniques and to use these techniques in teaching and training in vocational schools. Tracing any faults of welding machines and providing for necessary maintenance and repairing.
6 Students have an adequate knowledge to offer solution for problems arising during welding of ferrous or non-ferrous materials and also provide suitable methods for welding. X
7 Students gain skills for technical communication and team work with his/her colloquies and superior on subjects related to his/her teachings such as design and practice. He/she has an ability to use Turkish language effectively in his/her personal or official communication. He/She has skill to represent his company/institution, sharing technical and intuitional information in electronic environment by oral or written communication.
8 Gaining ability to self learning and also implementing his/her learning. To gain skill to conduct research on his/her subject personally and present results as technical reports. Monitoring new improvements and updating him/herself continuously and also updating and upgrading these improvements to his/her institution.
9 Having use of foreign languages can make communication and follow up new technologies in metal technologies
10 Having adequate computing skill to use wordprocessing, internet communication, CAD programs such as autocad, solidworks etc.
11 Having an adequate knowledge of health and safety in metal work sectors and also knowledge of social security, ethic values, quality assurance systems, management and environment.
12 Being aware of Atatürk’s principles and his revolutions.
13 Students have enough theoretical and practical knowledge of teaching on metal technology subjects.
14 Having ability to evaluate student’s progress and activities, he/she also provide for an environment to evaluate students each other. He/she can use and share the results obtained from evaluations to make improvements in teaching and training activities.
15 Having ability to self evaluate him/her self to make progress and improvements. Being open minded to ideas and improvements he/she supports him/her self and institutions. He/she has knowledge of law, regulation and policy related to his/her job and obeys all the rules accordingly. He/she has a respect and awareness of the environment and the society.
Evaluation System
Semester Studies Contribution Rate
1. Ara Sınav 55
1. Kısa Sınav 10
1. Ödev 15
1. Sözlü Sınav 10
2. Kısa Sınav 10
Total 100
1. Yıl İçinin Başarıya 55
1. Final 45
Total 100
ECTS - Workload Activity Quantity Time (Hours) Total Workload (Hours)
Course Duration (Including the exam week: 16x Total course hours) 16 2 32
Hours for off-the-classroom study (Pre-study, practice) 16 1 16
Mid-terms 1 10 10
Quiz 2 2 4
Assignment 1 3 3
Oral Examination 1 3 3
Final examination 1 3 3
Total Workload 71
Total Workload / 25 (Hours) 2.84
dersAKTSKredisi 3