Andy Waniuk, LiquidMetal Technologies
"Science and Technology of Liquid Metal Alloys"
Meeting is FREE.
Abstract:
Amorphous alloys are “frozen” metallic liquids which, unlike conventional crystalline metals, contain
randomly organized atoms with no grain boundaries. The favorable properties exhibited by amorphous alloys, such as high strength and good corrosion resistance, have been known for some time.
However, the use of amorphous alloys for engineering applications has until recently been somewhat restricted due to the requirement of rapid cooling from the melt, which limited the size of cast parts to very thin shapes. In the last few decades, there have been exciting developments in this area of research, leading to the discovery of bulk glass-forming alloy systems.
These alloys are now developed and marketed for commercial use by Liquidmetal Technologies under the trade
name Liquidmetal Alloy. The most useful family of glass-forming alloys, Zr-Ti-Ni-Cu-Be, is such an exceptional
system that fully amorphous objects with section thickness up to 30 mm can be prepared, and the more robust alloys also allow one to measure thermophysical properties in the deeply under-cooled liquid regime.
One unique aspect of Liquidmetal Alloys is their exceptional mechanical properties (up to 270 ksi yield strength) in
the as-cast condition. Furthermore, the unique casting characteristics of Liquidmetal Alloy allow for near net shape
component fabrication with reduced post-finishing processes. As such, Liquidmetal Alloy can provide enabling
solutions in several engineering applications.
A brief history of amorphous alloys from early rapid quenching to the current state will be presented. After the origin of amorphous alloy formation is discussed, the Zr-Ti-Cu-Ni-Be alloy system will be presented as an example.
Engineering properties and potential applications of Liquidmetal Alloys will be discussed.
Bio:
Dr. Theodore A. Waniuk earned a Ph.D. in Materials Science from the California Institute of Technology in 2004,
and is currently a staff scientist at Liquidmetal Technologies, Inc. His Ph.D. studies focused on the thermophysical
properties of amorphous alloys and involved the characterization of thermal stability, crystallization time scales, and low temperature viscosity in this class of materials.
Dr. Waniuk has led a team of engineers and technicians at Liquidmetal Technologies, Inc in several projects related to the development of prototype Liquidmetal alloys and composites for kinetic energy penetrator applications.
La Quinta Inn, 14972 Sand Canyon Avenue
(949) 551-0909
Located just off the Sand Canyon 5 freeway exit.
Meeting is FREE
For more details contact the ASM OC Chairman at
