GEAS(MSE & ESE)

• Dealing with the composition, structure and properties of materials. Material Science
• Involves designing or engineering the structure of a material to produce a predetermined set of properties. Material engineering
• FOUR IMPORTANT COMPONENTS OF MATERIALS SCIENCE AND ENGINEERING: Structure, property, processing, performance
• Relates to the arrangement of its internal components. Structure
• Four types of structure: Sub-atomic, atomic, microscopic, macroscopic
• Involves electrons within the individual atoms and interactions with their nuclei. Sub-atomic structure
• It is the organization of atoms or molecules relative to one another. Atomic structure
• It is the material trait in terms of the kind and magnitude response. Property
• They are made independent of material shape and size. Property
• SIX CLASSIFICATIONS OF THE PROPERTIES OF A SOLID MATERIALS: Mechanical, electrical, thermal, magnetic, optical, deteriorative
• Relate deformation to an applied load or force. Mechanical
• The stimulus is an electric field on a material. Electrical
• Terms of heat capacity and thermal conductivity. Thermal
• Response of the material to the application of a magnetic field. Magnetic
• Light radiation. Optical
• Relate to the chemical reactivity of a material. Deteriorative
• Materials with combination of metallic elements. Metal
• Highest density material. Metal
• Extremely good electrical and heat conductors. Metal
• Strong and deformable material. Metal
• Stiff – ability to return to its original shape. Metal
• Ductile – ability to become wire. Metal
• Resistant to fracture. Metal
• Not transparent to visible light(opaque). Metal
• Has a lustrous appearance. Metal
• Some has magnetic properties. Metal
• Recite the METALS. Done
• Three kinds of Tests: Rockwell hardness test, Brinell hardness test, knoop and vickers microhardness test
• Most common and has difference in depth penetration. Rockwell
• As in Rockwell measurements, hard, spherical indenter. Brinell
• A very small diamond indenter having pyramidal geometry. Knoop and vickers
• The addition of other elements into metal. Alloying
• Composition for brass: Copper, Zinc
• Composition for Bronze: Copper, Tin
• Composition for Pewter: Bismuth, Antimony, copper, tin
• Composition for Cast iron: Carbon, Iron, silicon, manganese
• Composition for Steel: Carbon, Iron
• Composition for Stainless steel: Iron, nickel, chromium
• Traditional process for making metallic components begin with melting of the metal or alloy. Casting
• The molten mass is poured into a mold of some type and solidified. Casting