Elements of Physical Metallurgy detail TNDTE Diploma syllabus for Agricultural Technology (MT), M scheme is extracted from TNDTE official website and presented for diploma students. The course code (32631), and for exam duration, Teaching Hr/week, Practical Hr/week, Total Marks, internal marks, theory marks, duration and credits do visit complete sem subjects post given below. The syllabus PDFs can be downloaded from official website.
For all other metallurgy 3rd sem syllabus for diploma m scheme tndte you can visit Metallurgy 3rd Sem Syllabus for Diploma M Scheme TNDTE Subjects. The detail syllabus for elements of physical metallurgy is as follows.
Rationale:
This subject is the basic fundamental for all Metallurgical subjects. All engineering fields are dealing with components made of different materials of widely varied nature in order to meet ever growing needs of modern world’s needs. To select the materials, process them to suit our expectations, design and manufacture of components to perform adequately in the application.
All above are concepts are provided to the students starting from atomic perspective then through materials combinations and their behaviour from view point of phase diagrams and the solidification phenomenon and subsequent processing techniques. Various possible defects at atomic level and bulk level are helpful in providing the ways to analyze the root cause of occurrences of defects and how to control them. Also it provides the analysis various phases and defects at microstructural level using Optical microscopy and Electron microscopy.
Objectives:
At the end of the study of III Semester the student will be able to
- The internal symmetry of crystal systems and their related properties & defects will be understood.
- Acquire knowledge about the construction and application of various phase diagrams.
- Able to analyze the microstructures and their related properties of materials.
- Understand the Fe-C phase diagram, various phases & how to control the properties by controlling the phases.
- Get knowledge about the mechanism of solidification & controlling the properties of poly-crystalline material by controlling of Grain size etc.
- Imparts information about the micro and macro structural studies and various microscopes.
- Various mechanisms of fracture surface appearance of the materials could be understood.
Detailed Content:
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Unit I
Atomic Structure, Electronic Configuration, Crystal Structures, Crystal Systems,And Crystal Defects:
- Introduction to metallurgy.
- Branches of metallurgy namely chemical, physical & mechanical.
- Levels of Structure, Structure – Property relationship.
Atomic Structure:
- Atom, definition, principal particles, Atomic structure by: J.J. Thomson, Rutherford’s & Bhor’s.
- Quantum numbers, Pauli’s Exclusion principle, Electronic configuration -principles only.
Crystal Structure And Crystal Systems:
- Definitions of crystalline & amorphous materials, crystal, space lattice, unit cell, co-ordinate axes, lattice points, characteristic Intercepts, Interstitial angle & lattice parameters.
- General Classification of crystal systems: Definitions for atomic radius, inter-atomic spacing, co-ordination number, effective number of atoms per unit cell, packing factor for BCC, FCC systems. HCP system- basics. Miller Indices –
crystallographic planes & directions.
Crystal Imperfections:
- Points defects:Vacancies, Interstitials, substitutional- ordered & disordered, Frankel, Schotkey defects.
- Line defects:Edge & screw dislocations with burger’s circuit. Slip system – slip directions and planes. Schmid’s law.
- Surface imperfection: External surface imperfection, grains & grain boundary, twin boundary, tilt boundary & stacking fault.
Volume defects: Tetrahedral & Octahedral voids Thermal vibration. Effect of imperfection and Grain size on metal properties. ASTM Grain size measurement.
Unit II
Principles Of Diffusion, Recovery, Recrystallization, Grain Growth, Mechanical, Electrical & Magnetic Properties Of Engineering Materials Diffusion:
Diffusion:
Law’s of diffusion – Fick’s I law – diffusion coefficient versus temperature – Fick’s II law. Interdiffusion and kirkendall effect. Cold worked structure, Recovery, Recrystallization & Grain Growth.
Mechanical Properties:
Stress, Strain, Stress-Strain Diagram for Ductile & Brittle materials, Elasticity, Plasticity, Proportional limit, Elastic limit, Yielding phenomenon, UYP & LYP, UTS, Fracture stress, Resilience, Toughness, Brittleness, Measure of Ductility & Malleability: Elongation in length, Reduction in cross-sectional area. Hardness, Wear resistance, Machinability, Castability & Weldability,
Electrical Properties:
Definition of conductivity, resistivity, Band theory – conductors, insulators and Semi- conductors in terms of band theory.
Magnetic Properties:
Magnetic Domain, magnetic moment – types of magnetic behavior like dia, Para, Ferro, Anti-Ferro & Ferri Magnetic behavior – basics only. Hysteresis loop, Hysteresis loss for soft & hard magnets – basics only.
Unit III
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Unit IV
Fe-C SYSTEM & SOLIDIFICATION PRINCIPLES
- Cooling curve for pure iron .
- Iron – Carbon equilibrium diagram – critical: points, temperatures,reaction, phases & regions .
- Definition of Ferrite, Austenite, Cementite, Leduberite, Pearlite, martensite, Bainite & trootsite .
- Introduction to TTT & CCT diagram .
- Steel Specifications – Indian Standards & AISI standards .
- Solidification of metals: Introduction – concept of solidification of pure metals and alloys .
- Liquid metal nucleation- Homogenous & Heterogeneous with nucleation rate curve .
- Crystal growth from liquid phase, Distribution co-efficient and solute distribution – Constitutional super cooling – Dendrite growth in Pure metals & alloys .
- Freezing of ingots .
- Segregation/coring – micro Segregation & macro Segregation .
- Porosity .
Unit V
Metallography
- Introduction and definition.
- Metallurgical microscopes.
- Preparation of specimen for micro study.
- Mounting process.
- Micro & macro enchants for different metals & alloys.
- Elementary ideas on Transmission Electron Microscope (TEM) &Scanning Electron Microscope (SEM).
- Fractured surfaces appearance: Ductile, Brittle, Fatigue and creep fractured Surfaces -basic only.
- Sulphur printing.
Text Books:
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Reference Books:
- Elements of Physical Metallurgy, A.C. Guy & J.J.Hren IIIrd Edition, Oxford & IBH Publishing, New Delhi 1974. Co.,
- Physical Metallurgy Principles, II Edition Reed Hill R.E.,East – West Press Pvt.Ltd, New Delhi- 1973.
- Metallurgy for Engineers, IV Edition, E.C. Rollason English Language Book Society
- Introduction to Physical Metallurgy Sidney H.Avner McGraw Hill International Book Co., New Delhi 1902
- Physical Metallurgy Principle and Practice, V.Raghavan Prentice – Hall of India Pvt Ltd., New Delhi 1985.
- The Science of Engineering of Materials, 4th Edition, Donald R.Askeland, & Pradeep P.Pule,Brookes Cole Engineering Division, Montery, US.
- Physical Metallurgy Principles, Vijendra Singh, 1st Edition, Standard Publishers Distributors, Delhi
For detail syllabus of all other subjects of BE Metallurgy, M scheme do visit Metallurgy 3rd Sem syllabus for M scheme.
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