The U.S. Department of Energy’s Ames Laboratory has discovered extreme “bounce,” or super-elastic shape-memory properties in a material that could be applied for use as an actuator in the harshest of conditions, such as outer space, and might be the first in a whole new class of shape memory materials.
“This was a fantastic and gratifying result,” said Paul Canfield, a senior scientist at Ames Laboratory, and a Distinguished Professor and the Robert Allen Wright Professor of Physics and Astronomy at Iowa State University. “It fully confirmed our suspicions about CaFe2As2 offering a new mode of achieving superelastic effects and greatly expands the number of materials that may offer similar or even greater behavior.”
The findings are newly published in Nature Communications Materials. The paper, “Superelasticity and Cryongenic Linear Shape Memory Effects of CaFe2As2,” is authored by John T. Sypek, Hang Yu, Keith J. Dusoe, Hetal Patel, Amanda M. Giroux, Alan I. Goldman, Andreas Kreyssig, Paul C. Canfield, Sergey L. Bud'ko, Christopher R. Weinberger, and Seok-Woo Lee.