ML3209 MECHANICAL METALLURGY SYLLABUS | ANNA UNIVERSITY BE MATERIALS SCIENCE AND ENGINEERING 4TH SEM SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY FOURTH SEMESTER BE MATERIALS SCIENCE AND ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,PREVIOUS YEAR QUESTION PAPERS,MODEL QUESTION PAPERS, CLASS NOTES, IMPORTANT 2 MARKS, 8 MARKS, 16 MARKS TOPICS. 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
ML3209 MECHANICAL METALLURGY L T P C
3 1 0 4
OBJECTIVE
The students having studied the basics of material structures and properties and
strength of materials, shall be introduced to dislocation theories of plasticity behaviour,
various strengthening mechanisms and fracture mechanics. It will expose students to
failure mechanisms due to fatigue and creep as well as their testing methods.
UNIT I ELASTIC AND PLASTIC BEHAVIOUR 10
Elastic behavior of materials - Hooke's law, plastic behaviour: dislocation theory -
Burger’s vectors and dislocation loops, dislocations in the FCC, HCP and BCC lattice,
stress fields and energies of dislocations, forces on and between dislocations,
dislocation climb, intersections of dislocations, Jogs, dislocation sources, multiplication
of dislocations, dislocation pile-ups, Slip and twinning.
UNIT II STRENGTHENING MECHANISMS 10
Elementary discussion of cold working, grain size strengthening. Solid solution
strengthening. martensitic strengthening, precipitation strengthening, dispersion
strengthening, fibre strengthening, examples of above strengthening mechanisms from
ferrous and non-ferrous systems, simple problems. Yield point phenomenon, strain
aging and dynamic strain aging
UNIT III FRACTURE AND FRACTURE MECHANICS 9
Types of fracture, basic mechanism of ductile and brittle fracture, Griffith’s theory of
brittle fracture, Orowan’s modification. Izod and Charpy Impacts tests, Ductile to Brittle
Transition Temperature (DBTT), Factors affecting DBTT, determination of DBTT.
Fracture mechanics-introduction, modes of fracture, stress intensity factor, strain energy
release rate, fracture toughness and determination of KIC, introduction to COD, J
integral.
UNIT IV FATIGUE BEHAVIOUR AND TESTING 8
Fatigue: Stress cycles, S-N curves, effect of mean stress, factors affecting fatigue,
structural changes accompanying fatigue, cumulative damage, HCF / LCF,
thermomechanical fatigue, application of fracture mechanics to fatigue crack
propagation, fatigue testing machines.
UNIT V CREEP BEHAVIOUR AND TESTING 9
30
Creep curve, stages in creep curve and explanation, structural changes during creep,
creep mechanisms, metallurgical factors affecting creep, high temperature alloys, stress
rupture testing, creep testing machines, parametetric methods of extrapolation.
Deformation Mechanism Maps according to Frost/Ashby .
L : 45, T : 15, TOTAL : 60 PERIODS
TEXT BOOKS
1. Dieter, G.E., “Mechanical Metallurgy”, McGraw-Hill, SI Edition, 1995.
2. Davis.H. E., Troxell G.E., Hauck.G. E. W., “The Testing of Engineering Materials”,
McGraw-Hill, 1982.
REFERENCES
1. Hayden, H. W. W. G. G. Moffatt, J. Moffatt and J. Wulff, The Structure and Properties
of Materials, Vol.III, Mechanical Behavior, John Wiley & Sons, New York, 1965.
2. Wulff, The Structure and Properties of Materials, Vol. III “Mechanical Behavior of
Materials”, John Wiley and Sons, New York, USA, 1983.
3. Honeycombe R. W. K., “Plastic Deformation of Materials”, Edward Arnold Publishers,
1984.
4. Suryanarayana, A. V. K., “Testing of Metallic Materials”, Prentice Hall India, New
Delhi, 1979.
ML3209 MECHANICAL METALLURGY L T P C
3 1 0 4
OBJECTIVE
The students having studied the basics of material structures and properties and
strength of materials, shall be introduced to dislocation theories of plasticity behaviour,
various strengthening mechanisms and fracture mechanics. It will expose students to
failure mechanisms due to fatigue and creep as well as their testing methods.
UNIT I ELASTIC AND PLASTIC BEHAVIOUR 10
Elastic behavior of materials - Hooke's law, plastic behaviour: dislocation theory -
Burger’s vectors and dislocation loops, dislocations in the FCC, HCP and BCC lattice,
stress fields and energies of dislocations, forces on and between dislocations,
dislocation climb, intersections of dislocations, Jogs, dislocation sources, multiplication
of dislocations, dislocation pile-ups, Slip and twinning.
UNIT II STRENGTHENING MECHANISMS 10
Elementary discussion of cold working, grain size strengthening. Solid solution
strengthening. martensitic strengthening, precipitation strengthening, dispersion
strengthening, fibre strengthening, examples of above strengthening mechanisms from
ferrous and non-ferrous systems, simple problems. Yield point phenomenon, strain
aging and dynamic strain aging
UNIT III FRACTURE AND FRACTURE MECHANICS 9
Types of fracture, basic mechanism of ductile and brittle fracture, Griffith’s theory of
brittle fracture, Orowan’s modification. Izod and Charpy Impacts tests, Ductile to Brittle
Transition Temperature (DBTT), Factors affecting DBTT, determination of DBTT.
Fracture mechanics-introduction, modes of fracture, stress intensity factor, strain energy
release rate, fracture toughness and determination of KIC, introduction to COD, J
integral.
UNIT IV FATIGUE BEHAVIOUR AND TESTING 8
Fatigue: Stress cycles, S-N curves, effect of mean stress, factors affecting fatigue,
structural changes accompanying fatigue, cumulative damage, HCF / LCF,
thermomechanical fatigue, application of fracture mechanics to fatigue crack
propagation, fatigue testing machines.
UNIT V CREEP BEHAVIOUR AND TESTING 9
30
Creep curve, stages in creep curve and explanation, structural changes during creep,
creep mechanisms, metallurgical factors affecting creep, high temperature alloys, stress
rupture testing, creep testing machines, parametetric methods of extrapolation.
Deformation Mechanism Maps according to Frost/Ashby .
L : 45, T : 15, TOTAL : 60 PERIODS
TEXT BOOKS
1. Dieter, G.E., “Mechanical Metallurgy”, McGraw-Hill, SI Edition, 1995.
2. Davis.H. E., Troxell G.E., Hauck.G. E. W., “The Testing of Engineering Materials”,
McGraw-Hill, 1982.
REFERENCES
1. Hayden, H. W. W. G. G. Moffatt, J. Moffatt and J. Wulff, The Structure and Properties
of Materials, Vol.III, Mechanical Behavior, John Wiley & Sons, New York, 1965.
2. Wulff, The Structure and Properties of Materials, Vol. III “Mechanical Behavior of
Materials”, John Wiley and Sons, New York, USA, 1983.
3. Honeycombe R. W. K., “Plastic Deformation of Materials”, Edward Arnold Publishers,
1984.
4. Suryanarayana, A. V. K., “Testing of Metallic Materials”, Prentice Hall India, New
Delhi, 1979.
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