Material Science
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Material Science By: By: Juan Carlos Uribe Juan Carlos Uribe
description
Material Science. By: Juan Carlos Uribe. Δ T = 1,000,000 °C / s. Non-crystalline, amorphous structure No dislocations No grain boundaries. High elastic limit High strength. Metals used:. Zirconium Beryllium Titanium. Copper Nickel. Discovered (1960’s) - PowerPoint PPT Presentation
Transcript of Material Science
Material Science
By:By: Juan Carlos UribeJuan Carlos Uribe
ΔT = 1,000,000 °C / s
• Non-crystalline, amorphous structure
No dislocations
No grain boundaries
• High elastic limit
• High strength
Discovered (1960’s)
California Institute of Technology
William L. Johnson
Atakan Peker
Metals used:
CopperNickel
ZirconiumBerylliumTitanium
• Golf clubs
• Fishing rods
• Car bumpers
• Aircraft skins
• Artificial joints
• Dies
• Cutting tools
• Others
• Small dimensions (due to cooling)
• Raw materials expensive
Approx. from $500 per pound
• Production expensive
HOT SPARKS FLY FROM A NOTCHED SAMPLE OF BULK METALLIC GLASS FRACTURED BY A BLOW FROM A PENDULUM
FRACTURED SURFACE SHOWS EVIDENCE OF LOCAL MELTING
REFERENCES
• http://www.lbl.gov/Science-Articles/Archives/spaparking-metallic-glass.html
• http://www.mat.ethz.ch/about_us/material_world/success...
• http://www.eurekalert.org/pub_releases/1998-03/
• http://science.nasa.gov/headlines/y2003/14apr_zeroglass.htm
• http://www.eng.auburn.edu/~wfgale/intro_metals/section3pg2.htm
