Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations


  • Hui Zhang
  • Jinyi Liu
  • Zhiyuan Ma
  • Daqiang Jiang
  • Lishan Cui
  • Kaiyuan Yu

Related Research Unit(s)


Original languageEnglish
Article number167195
Journal / PublicationJournal of Alloys and Compounds
Online published15 Sep 2022
Publication statusPublished - 20 Dec 2022


Shape memory alloys (SMAs) with small stress-hysteresis and wide superelasticity temperature window are highly desired for elastocaloric applications. In this study, a nanocrystalline Ti50Ni42Cu6Fe2 SMA is fabricated by casting, forging, wire-drawing and annealing. The alloy exhibits superelasticity with a narrow average stress-hysteresis of ∼180 MPa over a temperature window from 213 K to 323 K. The temperature change of the elastocaloric effect is calculated to be ∼28 K. In situ synchrotron X-ray diffraction measurements suggest that the small hysteresis is probably attributed to the enhanced lattice compatibility as quantified by the cofactor condition parameters (λ2, XI and XII).

Research Area(s)

  • Elastocaloric, Lattice compatibility, Shape memory alloys, Stress-hysteresis

Citation Format(s)