MATERIALS METALS CERAMICS POLYMERS COMPOSITES ADVANCED MATERIALS ME

MATERIALS METALS CERAMICS POLYMERS COMPOSITES ADVANCED MATERIALS ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 1

METALS Combinations of metallic elements Non bound electrons – thermal/electrical conductivity. Steel gear produced using Powder Metallurgy Close dimensional tolerance and high strength and wear resistance ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 2

POLYMERS Organic compounds – mainly based on Hydrogen, Carbon, and non-metallic element Fighter plane fully covered with a paint replacement adhesive $3 BILLION SAVED OVER LIFE TIME COSTS ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 3

CERAMICS Compounds between metals and non-metals Properties ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 4

COMPOSITES * Metal matrix composites (MMC’s) * Ceramic matrix composites (CMC’s) Si. C Alumina 10 m Fibers * Polymer composites - fiberglass ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 5

SEMICONDUCTORS BIOMATERIALS ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 6

ADVANCED MATERIALS High performance applications Nickel based super alloys Turbine blade mechanically fixed to the rotor of a high performance gas turbine engine ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 7

ULTRALIGHT MATERIALS – METALLIC FOAMS ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 8

Nanomaterials JOM, Jan 2004 ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 9

BRITTLE FRACTURE ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 10

Figure 1. 1. The four components of the discipline of Materials Science and Engineering and their linear interrelationship Processing Structure Properties Performance Subatomic Mechanical atomic microscopic macroscopic Electrical Magnetic Thermal optical ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 11

Processing Mechanical properties Microstructure ME 260: INTRODUCTION TO ENGINEERING MATERIALS Properties 1. 12

SINGLE CRYSTAL POLYCRYSTAL + PORES Figure 1. 2 – Alumina (Al 2 O 3) – single crystal and polycrystal ME 260: INTRODUCTION TO ENGINEERING MATERIALS 1. 13