Lect-4 introduction to the classification of materials

1. Lect-4 introduction to the classification of materials Industrial Material Applications, IE251 Dr M. A. Eissa King Saud University College of Engineering Department of Industrial Engineering

2. Classification of Materials • Functional Classification of Materials • Classification of Materials Based on Structure • Environmental and Other Effects • Materials Design and Selection

3. Classification of Materials • Metals and Alloys • Ceramics, Glasses,and Glass-ceramics • Polymers (plastics), Thermoplastics and Thermosets • Composite Materials

5. Functional Classification ofMaterials • Aerospace • Biomedical • Electronic Materials • Energy Technology and Environmental Technology • Magnetic Materials • Photonic or Optical Materials • Smart Materials • Structural Materials

7. Classification of Materials-Based on Structure • Crystallinematerial is a material comprised of one or many crystals. In each crystal, atoms or ions show a long-range periodic arrangement. • Single crystalis a crystalline material that is made of only one crystal (there are no grain boundaries). • Polycrystallinematerial is a material comprised of many crystals (as opposed to a single-crystal material that has only one crystal). • Grains are the crystals in a polycrystalline material. • Grain boundaries are regions between grains of a polycrystalline material.

8. Environmental and Other Effects • Effects of following factors must be accounted for in design to ensure that components do not fail unexpectedly: • Temperature • Corrosion • Fatigue • Strain Rate

11. Materials, process and shape

12. The world of materials

13. Basic material properties

14. Mechanical properties illustrated

15. Materials Data Organisation: