Course11310608220 lectures
Welding of Advanced High Strength Steels for Automotive Applications
Prof. Murugaiyan Amirthalingam · IIT Madras
About
The use of advanced high strength steels (AHSS) is increasingly preferred in automotive applications due to improved crash energy management and enhanced strength-ductility combinations, resulting in greener and safer vehicles. The weldability of AHSS is generally poorer than conventional steels due to the high alloying contents required to obtain multi-phase microstructure. This course is aimed to discuss the (i) role of alloying elements in stabilizing multi-phase microstructures of AHSS, (ii) effect of weld thermal cycles on the evolution of microstructures and (iii) weldability of AHSS.
INTENDED AUDIENCE : Final year bachelors and masters students in Metallurgy, Mechanical, Automobile and Production Engineering. Industrial personnel working in automotive and steel making industries.
PREREQUISITES : Final year B.E/B.Tech students or Graduates of Metallurgical/Mechanical/Automobile/Production Engineering,Basic knowledge of steel physical metallurgy and welding processes.
INDUSTRY SUPPORT : All automotive manufacturers and their OEMs and Steel plants.
Lectures
Week 1
- Introduction to the course, Introduction to physical metallurgy of steels
- Martensitic transformation, Introduction to modern automotive steels
- Introduction to modern automotive steels
- Introduction to advanced high strength steels
- Introduction to Dual Phase Steel and TRIP Steel Heat Treatments
Week 2
- Thermal and Mechanical Processing of TRIP and Hot Forming Steels
- Introduction to Welding Processes in Automotive Industries
- Principles of Resistance Spot Welding (RSW)
- Process Characteristics of Resistance Spot Welding - Part - I
- Process Characteristics of Resistance Spot Welding - Part - II
Week 3
- Introduction to Laser Beam Welding - Part - I
- Introduction to Laser Beam Welding - Part - II
- Principles of Gas Metal Arc Welding - Part - I
- Principles of Gas Metal Arc Welding - Part - II
- Welding Metallurgy of Advanced High Strength Steels - Part - I
Week 4
- Microstructural Evolution During Welding of Advanced High Strength Steels
- Elemental Behaviour During Welding of Advanced High Strength Steels
- Quantification of Microstructural Constituents in Automotive Steel Welds Part - I
- Quantification of Microstructural Constituents in Automotive Steel Welds Part - II and Mechanical Properties
- Methodologies to Improve the Weldability of Advanced High Strength Steels
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Madras
- Department
- Metallurgy and Material Science
- Teacher
- Prof. Murugaiyan Amirthalingam
- Level
- Graduate
- Language
- English
- Subjects
- Engineering
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed