MetE227-c1 - What is MATERIAL What Historical Perspective...

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What What is is MATERIAL MATERIAL ? ?
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• Beginning of the Material Science - People began to make tools from stone – Start of the Stone Age about two million years ago. Natural materials: stone, wood, clay, skins, etc. • The Stone Age ended about 5000 years ago with introduction of Bronze in the Far East. Bronze is an alloy (a metal made up of more than one element), copper + < 25% of tin + other elements. Bronze: can be hammered or cast into a variety of shapes, can be made harder by alloying, corrode only slowly after a surface oxide film forms. • The Iron Age began about 3000 years ago and continues today. Use of iron and steel, a stronger and cheaper material changed drastically daily life of a common person. • Age of Advanced materials: throughout the Iron Age many new types of materials have been introduced (ceramic, semiconductors, polymers, composites…). Historical Perspective of Materials Science Historical Perspective of Materials Science
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What is Materials Science and Engineering ? Material science is the investigation of the relationship among processing, structure, properties, and performance of materials. Performance
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MetE227-c1 - What is MATERIAL What Historical Perspective...

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