INTRODUCTION TO ENGINEERING MATERIALS Common type of materials Metals Ceramics Polymers Composites Structure The Materials Tetrahedron Properties Performance Prepared by Dr. Tanuja Vaidya Processing METALLURGY Science of Metallurgy PHYSICAL MECHANICAL ELECTRO- TECHNOLOGICAL CHEMICAL • Extractive • Structure • • • Casting • Deformation Chemistry Physical • • Metal Forming Behaviour Corrosion Properties • Welding • Powder Metallurgy • Machining Prepared by Dr. Tanuja Vaidya Thermo-mechanical Treatments Crystal Atom Structure Microstructure Component Electro- magnetic Phases + Defects • Vacancies • Dislocations ...

 

Figure (1): Four classes of PM parts—side view shown; cross section is circular: (a) Class I—simple thin shapes that can be pressed from one direction; (b) Class II—simple but thicker shapes that require pressing from two directions; (c) Class III—two levels of thickness, pressed from two directions; and (d) Class IV—multiple levels of thickness, pressed from two directions, with separate controls for each level to achieve proper densification throughout the compact. The MPIF classification system ...