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Title: Superelasticity and cryogenic linear shape memory effects of CaFe2As2

Abstract

Shape memory materials have the ability to recover their original shape after a significant amount of deformation when they are subjected to certain stimuli, for instance, heat or magnetic fields. But, their performance is often limited by the energetics and geometry of the martensitic-austenitic phase transformation. We report a unique shape memory behavior in CaFe2As2, which exhibits superelasticity with over 13% recoverable strain, over 3 GPa yield strength, repeatable stress–strain response even at the micrometer scale, and cryogenic linear shape memory effects near 50 K. These properties are acheived through a reversible uni-axial phase transformation mechanism, the tetragonal/orthorhombic-to-collapsed-tetragonal phase transformation. These results offer the possibility of developing cryogenic linear actuation technologies with a high precision and high actuation power per unit volume for deep space exploration, and more broadly, suggest a mechanistic path to a class of shape memory materials, ThCr2Si2-structured intermetallic compounds.

Authors:
 [1];  [2];  [1];  [3];  [1];  [1]; ORCiD logo [3];  [3];  [3];  [3];  [4]; ORCiD logo [1]
  1. Univ. of Connet. Dept. of Materials Science and Engineering, Inst. of Materials Science
  2. Drexel Univ., Philadelphia, PA (United States). Dept. of Mechanical Engineering and Mechanics
  3. Iowa State Univ., Ames, IA (United States). Ames Lab., Dept. of Physics and Astronomy
  4. Drexel Univ., Philadelphia, PA (United States). Dept. of Mechanical Engineering and Mechanics; Colorado State Univ., Fort Collins, CO (United States). Dept. of Mechanical Engineering
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1407487
Report Number(s):
IS-J 9415
Journal ID: ISSN 2041-1723; PII: 1275
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; aerospace engineering; mechanical engineering; mechanical properties; metals and alloys

Citation Formats

Sypek, John T., Yu, Hang, Dusoe, Keith J., Drachuck, Gil, Patel, Hetal, Giroux, Amanda M., Goldman, Alan I., Kreyssig, Andreas, Canfield, Paul C., Bud’ko, Sergey L., Weinberger, Christopher R., and Lee, Seok-Woo. Superelasticity and cryogenic linear shape memory effects of CaFe2As2. United States: N. p., 2017. Web. doi:10.1038/s41467-017-01275-z.
Sypek, John T., Yu, Hang, Dusoe, Keith J., Drachuck, Gil, Patel, Hetal, Giroux, Amanda M., Goldman, Alan I., Kreyssig, Andreas, Canfield, Paul C., Bud’ko, Sergey L., Weinberger, Christopher R., & Lee, Seok-Woo. Superelasticity and cryogenic linear shape memory effects of CaFe2As2. United States. https://doi.org/10.1038/s41467-017-01275-z
Sypek, John T., Yu, Hang, Dusoe, Keith J., Drachuck, Gil, Patel, Hetal, Giroux, Amanda M., Goldman, Alan I., Kreyssig, Andreas, Canfield, Paul C., Bud’ko, Sergey L., Weinberger, Christopher R., and Lee, Seok-Woo. Fri . "Superelasticity and cryogenic linear shape memory effects of CaFe2As2". United States. https://doi.org/10.1038/s41467-017-01275-z. https://www.osti.gov/servlets/purl/1407487.
@article{osti_1407487,
title = {Superelasticity and cryogenic linear shape memory effects of CaFe2As2},
author = {Sypek, John T. and Yu, Hang and Dusoe, Keith J. and Drachuck, Gil and Patel, Hetal and Giroux, Amanda M. and Goldman, Alan I. and Kreyssig, Andreas and Canfield, Paul C. and Bud’ko, Sergey L. and Weinberger, Christopher R. and Lee, Seok-Woo},
abstractNote = {Shape memory materials have the ability to recover their original shape after a significant amount of deformation when they are subjected to certain stimuli, for instance, heat or magnetic fields. But, their performance is often limited by the energetics and geometry of the martensitic-austenitic phase transformation. We report a unique shape memory behavior in CaFe2As2, which exhibits superelasticity with over 13% recoverable strain, over 3 GPa yield strength, repeatable stress–strain response even at the micrometer scale, and cryogenic linear shape memory effects near 50 K. These properties are acheived through a reversible uni-axial phase transformation mechanism, the tetragonal/orthorhombic-to-collapsed-tetragonal phase transformation. These results offer the possibility of developing cryogenic linear actuation technologies with a high precision and high actuation power per unit volume for deep space exploration, and more broadly, suggest a mechanistic path to a class of shape memory materials, ThCr2Si2-structured intermetallic compounds.},
doi = {10.1038/s41467-017-01275-z},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {Fri Oct 20 00:00:00 EDT 2017},
month = {Fri Oct 20 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

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