PH8251 MATERIALS SCIENCE Syllabus Notes Question Bank

PH8251 MATERIALS SCIENCE Syllabus Notes Question Bank Regulation 2017

PH8251 MATERIALS SCIENCE

(Common to courses offered in Faculty of Mechanical Engineering Except B.E. Materials Science and Engineering )

OBJECTIVES:
 To introduce the essential principles of materials science for mechanical and related engineering applications.

UNIT I PHASE DIAGRAMS

9 Solid solutions - Hume Rothery's rules – the phase rule - single component system - one-component system of iron - binary phase diagrams - isomorphous systems - the tie-line rule - the lever rule - application to isomorphous system - eutectic phase diagram - peritectic phase diagram - other invariant reactions – free energy composition curves for binary systems - microstructural change during cooling.

UNIT II FERROUS ALLOYS

9 The iron-carbon equilibrium diagram - phases, invariant reactions - microstructure of slowly cooled steels - eutectoid steel, hypo and hypereutectoid steels - effect of alloying elements on the Fe-C system - 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-resistant materials - fracture - the Griffith criterion - critical stress intensity factor and its determination - fatigue failure - fatigue tests - methods of increasing fatigue life - hardness - Rockwell and Brinell hardness - Knoop and Vickers microhardness. 18

 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 on polarization - dielectric breakdown – insulating materials – Ferroelectric materials - superconducting materials 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, melt spinning process, applications - shape memory alloys: phases, shape memory effect, pseudoelastic effect, 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 and alloys  the students will get knowledge on mechanical properties of materials and their measurement  the students will gain knowledge on magnetic, dielectric and superconducting properties of materials  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.