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Material Science

by Shanmugam.s
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GANESH COLLEGE OF ENGINEERING (Affiliated to Anna University, Chennai) ATTUR MAIN ROAD, METTUPATTI, SALEM – 636 111. Course Material for MATERIALS SCIENCE (Common to courses offered in Faculty of MechanicalEngineering Except B.E. Materials Science and Engineering) SUBJECT CODE: PH8251 Prepared by Mr. S.SHANMUGAM, M.Sc., M.Ed., M.Phil., Assistant Professor DEPARTMENT OF PHYSICS 2
MATERIALS SCIENCE (Common to courses offered in Faculty of MechanicalEngineering Except B.E. Materials Science and Engineering) LTPC 3 00 3 OBJECTIVES:  To introduce the essential principles of materials science for mechanical and related engineering applications. UNIT IPHASE DIAGRAMS 9 ` solutions Solid - Hume Rothery's rules – the phase rule - single component system - onecomponentsystem of iron - binary phase diagrams - isomorphous systems - the tie-line rule - the lever rule application to isomorphous system - eutectic phase diagram - peritectic phase diagram – otherinvariant reactions – free energy composition curves for binary systems - micro structural changeduring cooling. UNIT II FERROUS ALLOYS 9 The iron-carbon equilibrium diagram - phases, invariant reactions - microstructure of slowly cooledsteels - eutectoid steel, hypo and hypereutectoid steels - effect of alloying elements on the FeCsystem - diffusion in solids - Fick's laws - phase transformations - T-T-T-diagram for eutectoid steel – pearlitic, baintic and martensitic transformations - tempering of martensite – steels – stainless steels –cast irons. UNIT III MECHANICAL PROPERTIES 9 Tensile test - plastic deformation mechanisms - slip and twinning - role of dislocations in slip strengthening methods - strain hardening - refinement of the grain size - solid solution strengthening precipitation hardening - creep resistance - creep curves - mechanisms of creep - creep-resistantmaterials fracture - the Griffith criterion - critical stress intensity factor and its determination – fatiguefailure - fatigue tests - methods of increasing fatigue life - hardness - Rockwell and Brinell hardness -Knoop and Vickers microhardness.For audio explanation and easy learning visit www.padeepz.comFor audio explanation and easy learning visit www.padeepz.com UNIT IV MAGNETIC, DIELECTRIC AND SUPERCONDUCTING MATERIALS 9 Ferromagnetism – domain theory – types of energy – hysteresis – hard and soft magnetic materials – ferrites - dielectric materials – types of polarization – Langevin-Debye equation – frequency effects onpolarization - dielectric breakdown – insulating materials – Ferroelectric materials – superconductingmaterials and their properties. UNIT V NEW MATERIALS 9 Ceramics – types and applications – composites: classification, role of matrix and reinforcement,processing of fiber reinforced plastics – metallic glasses: types , glass forming ability of alloys, meltspinning process, applications - shape memory alloys: phases, shape memory effect, 3
pseudoelasticeffect, NiTi alloy, applications – nanomaterials: preparation (bottom up and top down approaches),properties and applications – carbon nanotubes: types. TOTAL: 45 PERIODS OUTCOMES: Upon completion of this course,  The students will have knowledge on the various phase diagrams and their applications  The students will acquire knowledge on Fe-Fe3C phase diagram,various microstructures andalloys  The students will get knowledge on mechanical properties of materials and their measurement  The students will gain knowledge on magnetic, dielectric and superconducting properties ofmaterials the students will understand the basics of ceramics, composites and nanomaterials. TEXT BOOKS: 1. Balasubramaniam, R. ―Callister's Materials Science and Engineering. Wiley India Pvt. Ltd., 2014. 2. Raghavan, V. ―Physical Metallurgy: Principles and Practice. PHI Learning, 2015. 3. Raghavan, V. ―Materials Science and Engineering: A First course. PHI Learning, 2015. REFERENCES 1. Askeland, D. ―Materials Science and Engineering‖. Brooks/Cole, 2010. 2. Smith, W.F., Hashemi, J. & Prakash, R. ―Materials Science and Engineering. Tata McGraw Hill Education Pvt. Ltd., 2014. 3. Wahab, M.A. ―Solid State Physics: Structure and Properties of Materials. Narosa Publishing House, 2009. 4

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