Skip to Content
Find More Like This
Return to Search

Methods of room temperature cold-plastic forming or patterning of amorphous alloys

Ames Laboratory

Contact AMES About This Technology

Technology Marketing Summary

Iowa State University and Ames Laboratory researchers have developed a method to form amorphous metal alloys at room temperature without introducing shear bands or micro-crystalline structure into the alloy.  This technique avoids increasing the brittleness of the alloy during thermoplastic forming by controlling the homogenous flow of the material.

Description

Amorphous alloys are desirable for use in high precision parts because the mechanical properties of these alloys, combined with the lack of grain boundaries, make them particularly suitable for fine-scale imprinting and patterning.  Thermo-plastic forming has often been utilized to form glassy metals, though this technique is inappropriate at room temperature because of the development of narrow shear bands in the metal.  These shear bands induce brittleness into the metal, often resulting in catastrophic failure of the part.  Various techniques may be used to achieve sufficient deformability of the alloy, including adding crystalline particles to create a second phase, controlling the deformation geometry, and raising the processing temperature of the alloy.  All of these techniques result in shortcomings in the resultant product.
 

Benefits
• Room temperature processing avoids embrittlement formed by sub-Tg annealing
• Process does not induce generation of shear bands in the alloy
• Provides control over deformation behavior of bulk amorphous alloys

 

Applications and Industries

Forming and patterning of bulk amorphous metal alloys

More Information

http://isurftech.technologypublisher.com/technology/21130

Song-Yi Kim, Eun-Soo Park, Ryan T. Ott, Thomas A. Lograsso, Moo-Young Huh, Do-Hyang Kim,  Jürgen Eckert and Min-Ha Lee, “Imprinting bulk amorphous alloy at room temperature”, Scientific Reports, 5, 16540, 2015.  DOI: 10.1038/srep16540

Patent applied for.

Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
4181PrototypeAvailable12/05/201712/05/2017

Contact AMES About This Technology

To: Craig Forney<licensing@iastate.edu>