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Fatigue-resistant high-performance elastocaloric materials via additive manufacturing
arXiv
  • Huilong Hou, University of Maryland at College Park
  • Emrah Simsek, Ames Laboratory
  • Tao Ma, Ames Laboratory
  • Nathan S. Johnson, Colorado School of Mines
  • Suxin Qian, Xi’an Jiaotong University
  • Cheikh Cissé, Colorado School of Mines
  • Drew Stasak, University of Maryland at College Park
  • Naila Al Hasan, University of Maryland at College Park
  • Lin Zhou, Ames Laboratory
  • Yunho Hwang, University of Maryland at College Park
  • Reinhard Radermacher, University of Maryland at College Park
  • Valery I. Levitas, Iowa State University and Ames Laboratory
  • Matthew J. Kramer, Iowa State University and Ames Laboratory
  • Mohsen Asle Zaeem, Colorado School of Mines
  • Aaron P. Stebner, Colorado School of Mines
  • Ryan T. Ott, Ames Laboratory
  • Jun Cui, Iowa State University and Ames Laboratory
  • Ichiro Takeuchi, University of Maryland at College Park
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
8-21-2019
Abstract

Elastocaloric cooling, which exploits the latent heat released and absorbed as stress-induced phase transformations are reversibly cycled in shape memory alloys, has recently emerged as a frontrunner in non-vapor-compression cooling technologies. The intrinsically high thermodynamic efficiency of elastocaloric materials is limited only by work hysteresis. Here, we report on creating high-performance low-hysteresis elastocaloric cooling materials via additive manufacturing of Titanium-Nickel (Ti-Ni) alloys. Contrary to established knowledge of the physical metallurgy of Ti-Ni alloys, intermetallic phases are found to be beneficial to elastocaloric performances when they are combined with the binary Ti-Ni compound in nanocomposite configurations. The resulting microstructure gives rise to quasi-linear stress-strain behaviors with extremely small hysteresis, leading to enhancement in the materials efficiency by a factor of five. Furthermore, despite being composed of more than 50% intermetallic phases, the reversible, repeatable elastocaloric performance of this material is shown to be stable over one million cycles. This result opens the door for direct implementation of additive manufacturing to elastocaloric cooling systems where versatile design strategy enables both topology optimization of heat exchangers as well as unique microstructural control of metallic refrigerants.

Comments

This is a pre-print of the article Hou, Huilong, Emrah Simsek, Tao Ma, Nathan S. Johnson, Suxin Qian, Cheikh Cisse, Drew Stasak, Naila Al Hasan, Lin Zhou, Yunho Hwang, Reinhard Radermacher, Valery I. Levitas, Matthew J. Kramer, Mohsen Asle Zaeem, Aaron P. Stebner, Ryan T. Ott, Jun Cui, and Ichiro Takeuchi. "Fatigue-resistant high-performance elastocaloric materials via additive manufacturing." arXiv preprint arXiv:1908.07900 (2019). Posted with permission.

Copyright Owner
The Authors
Language
en
File Format
application/pdf
Citation Information
Huilong Hou, Emrah Simsek, Tao Ma, Nathan S. Johnson, et al.. "Fatigue-resistant high-performance elastocaloric materials via additive manufacturing" arXiv (2019)
Available at: http://works.bepress.com/valery_levitas/112/