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1. Material Science

2. ΔT = 1,000,000 °C / s

3. • Non-crystalline, amorphous structure
No dislocations
No grain boundaries
• High elastic limit
• High strength

4. Discovered (1960’s)
California Institute of Technology
William L. Johnson
Atakan Peker
Metals used:
Copper
Nickel
Zirconium
Beryllium
Titanium

5. • Golf clubs
• Fishing rods
• Car bumpers
• Aircraft skins
• Artificial joints
• Dies
• Cutting tools
• Others

6. • Small dimensions (due to cooling)
• Raw materials expensive
Approx. from $500 per pound
• Production expensive

7. 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