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Advances in Bulk Metallic Glass: Properties, Applications, and Manufacturing Challenges

Explore the fascinating world of bulk metallic glass, a non-crystalline, amorphous material characterized by its high elastic limit and strength. Discovered in the 1960s by researchers at Caltech, including William L. Johnson and Atakan Peker, these materials have applications in golf clubs, fishing rods, aircraft skins, and artificial joints. Despite their remarkable properties, the high cost of raw materials and production presents challenges. Discover the science behind their rapid cooling process and the unique dislocation-free structure that sets them apart.

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Advances in Bulk Metallic Glass: Properties, Applications, and Manufacturing Challenges

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Presentation Transcript

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

  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

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