Introduction
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involves the investigation of the relationship between the structure and properties of materials
Materials science
deals with the modification of structure to produce desired set of properties.
Materials engineering
Why study materials science and engineering?
• in-service conditions must be characterized, • deterioration of material properties • economics
___ of a material usually relates to the arrangement of its internal components
Structure
___ is a material trait in terms of the kind and magnitude of response to a specific imposed stimulus.
Property
6 Properties of Materials
mechanical, electrical, thermal, magnetic, optical, deteriorative
hardness, tensile strength, malleability
mechanical
electric conductivity
electrical
thermal conductivity
thermal
paramagnetism, diamagnetism
magnetic
refraction, absorption, reflection
optical
corrosion resistance
deteriorative
4 components of mat sci and engineering
processing, structure, property, performance
4 Classification of Materials
metals, ceramics, polymer, composites
good conductors of electricity and heat
metals
low thermal and electrical conductivity, brittle
ceramics
low electrical conductivities and are nonmagnetic
polymer
combination of 2 or more
composites
metallic elements of metals
iron, aluminum, copper, titanium, gold, and nickel
non-metallic elements of metals
carbon, nitrogen, and oxygen
may be transparent, translucent, or opaque
ceramic
These materials typically have low densities
polymers
easily formed into complex shapes
polymers
very good barrier to the diffusion of carbon dioxide
metal (aluminum alloy)