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ML3404 WELDING METALLURGY SYLLABUS | ANNA UNIVERSITY BE MATERIALS SCIENCE AND ENGINEERING 7TH SEM SYLLABUS REGULATION 2008 2011 2012-2013

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ML3404 WELDING METALLURGY SYLLABUS | ANNA UNIVERSITY BE MATERIALS SCIENCE AND ENGINEERING 7TH SEM SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY SEVENTH SEMESTER BE MATERIALS SCIENCE AND ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,CLASS NOTES IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI,TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009


ML3404 WELDING METALLURGY L T P C
3 0 0 3
56
AIM
To enable students to study the process of joining by welding in detail.
OBJECTIVES
Welding is one of the most important fabrication processes in industry and requires both
theoretical understanding and experience of materials used in industry. This can be
achieved in this course.
UNIT I WELDING METALLURGY PRINCIPLES 9
Thermal cycles in welding: basic heat transfer equations, temperature distributions and
cooling curves, dependence of cooling rate on heat input, joint geometry, preheat and
other factors. Comparison of welding processes based on these considerations.
UNIT II PHYSICAL METALLURGY OF WELDING 9
Welding of ferrous materials: Iron - carbon diagram, TTT and CCT diagrams, effects of
steel composition, formation of different microstructural zones in welded plain-carbon
steels. Welding of C-Mn and low-alloy steels, phase transformations in weld and heat -
affected zones, cold cracking, role of hydrogen and carbon equivalent, formation of
acicular ferrite and effect on weld metal toughness.
UNIT III WELDING OF ALLOY STEELS 9
Welding of stainless steels, types of stainless steels, overview of joining ferritic and
martensitic types, welding of austenitic stainless steels, hot cracking, sigma phase and
chromium carbide formation, ways of overcoming these difficulties, welding of cast iron.
UNIT IV WELDING OF NON-FERROUS METALS 9
Welding of non-ferrous materials: Joining of aluminium, copper, nickel and titanium
alloys, problems encountered and solutions.
UNIT V DEFECTS AND WELDABILITY 9
Defects in welded joints: Defects such as arc strike, porosity, undercut, slag entrapment
and hot cracking, causes and remedies in each case. Joining of dissimilar materials,
testing of weldability.
TOTAL : 45 PERIODS
TEXT BOOKS:
1. Linnert. G. E. “Welding Metallurgy”. Vol. 1 and 2. 4th edition. A W S. USA, 1994.
2. Lancaster J. F. “Metallurgy of Welding”, 4th Londre: George Allen & Unwin.1987.
REFERENCES:
1. Saferian D. “The Metallurgy of Welding”. Chapman and Hall, UK, 1985.
2. “AWS Welding Hand book”, 8th edition, Vol-1,“Welding Technology”, 1998.
3. Sindo Kuo,“ Welding Metallurgy”, John Wiley & Sons, 2003
4. Henry Granjon,“Fundamentals of Welding Metallurgy”, Abington Pub, 1991
5. Robert W. Messler, “Principles of Welding: Processes, Physics, Chemistry, and
Metallurgy”, Wiley, 1999.

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