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educational mechanical engineering

meterial science in mechanical engineering

Hello friends, many of us sometimes don’t understand the particular subject or importance of the subject and just read the subject for passing the exams.

It’s a very big problem in engineering and it is one of the major factor because of which many engineers don’t get the job after completing the graduation.

Here, I would like to discuss about the subject MATERIAL SCIENCE. In this blog, I will discuss about the basic objectives, syllabus of this course “MATERIAL SCIENCE”

As a mechanical engineer student should have

  • basic knowledgeneeded to explore the discipline of materials science and engineering
  • knowledge of how the structure of materials is describedtechnically, including crystallography, microstructure, defects, and phasediagrams
  • knowledge of how the properties of materials aredescribed technically and how material failure is analyzed
  • the concepts of structure-property relationships
  • knowledge in various class of materials and their applications
  • mechanical behavior of metallic systems and itsimportance
  • Evaluate system for fatigue failures

Since it’s for engineers, so I will mainly focus with respect to engineering. Some topics may differ from university to university but most of the content will be same in all over the India.

We can divide it basically in five parts which are following:

  1. Basic concepts
  2. Phase Diagrams and Phase Transformation
  3. Heat Treatment & Surface Heat treatments
  4. Mechanical Properties of Materials
  5. Non Ferrous Alloys & Advanced materials

Basic conceptscover topics such as Introduction to Materials Science, Defects-Point, Line, Planar, Volume- Slip planes and slipsystems, Schmidt’s rule, Polymorphism and allotropy – Solidification Nucleation andGrowth mechanism, Cooling curve of pure metal and alloyetc. . .(most of the topics you also would have studied in your higher secondary as well.)

 

Phase Diagrams and Phase Transformation covers such Gibbs’s Phase rule, Solubility and Solid Solutions – Iso-morphous alloy system – Binary Eutectic alloy system (Lead-Tin System), Eutectoid and Peritectic system, Iron-Iron carbide phase diagram- Invariant reactions, Evolution of Microstructure, Phase Transformation-Temperature-Time-Transformation (TTT) and Continuous Cooling Transformation (CCT) Diagrams – Steels, Cast Irons and Stainless steels – types and applications – Effects of alloying elements.

 

Heat Treatment & Surface Heat treatmentscovers Heat Treatment – Annealing and its types, Normalizing, Aus-tempering, Mar-tempering, Quenching and Temper heat treatment, Hardenability – Basic concepts of wear and corrosion & their types – Surface hardening processes –Flame and induction hardening, Carburizing, Nitriding and Carbonitriding.

 

Mechanical Properties of MaterialscoversTension, Compression, Shear and Torsional Test of Metals -Stress-strain behaviour of ferrous & non-ferrous metals, polymer and ceramics – True stress and strain relations – Flexural Test, Hardness measurement tests, Fracture of metals – Ductile Fracture, Brittle Fracture, Fatigue – Endurance limit of ferrous and non-ferrous metals – Fatigue test; Creep and stress rupture– mechanism of creep – stages of creep and creep test, Strengtheningmechanisms

 

Non Ferrous Alloys & Advanced materialscovers Non Ferrous Alloys of Aluminum, Magnesium, Copper, Nickel, Titanium – Microstructureand mechanical property relationships; Composites – Classification, Processing, Metal Matrix, Ceramic Matrix, polymer matrix – properties and applications; Ceramics – Alumina, Zirconia, Silicon Carbide, Sialons, Reaction Bonded Silicon Nitride(RBSN),Processing, properties and applications of ceramics, Glasses – properties and applications.

 

It has vast syllabus but considering current advancements and other technological developments these topics will be sufficient enough for mechanical engineers for application point of view.

 

For more knowledge students can refer below mentioned books:-

  1. D. Callister, Jr.,(2010), Materials Science and Engineering: An Introduction, 8th ed.,Wiley & Sons
  2. C. Anderson, K.D. Leaver, P. Leavers and R.D. Rawlings, (2003), Materials Sciencefor Engineers, 5th edition, Tata McGraw Hill Publishers.
  3. Lawrence E.Murr (2000), Failure analysis, Marcel Dekker Inc.publications.

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