Direct evidence of detwinning in polycrystalline Ni-Mn-Ga ferromagnetic shape memory alloys during deformation

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

12 Scopus Citations
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Author(s)

  • Z. H. Nie
  • R. Lin Peng
  • S. Johansson
  • E. C. Oliver
  • Y. D. Wang
  • Y. D. Liu
  • J. N. Deng
  • L. Zuo
  • D. E. Brown

Detail(s)

Original languageEnglish
Article number103519
Journal / PublicationJournal of Applied Physics
Volume104
Issue number10
Publication statusPublished - 2008
Externally publishedYes

Abstract

In situ time-of-flight neutron diffraction and high-energy x-ray diffraction techniques were used to reveal the preferred reselection of martensite variants through a detwinning process in polycrystalline Ni-Mn-Ga ferromagnetic shape memory alloys under uniaxial compressive stress. The variant reorientation via detwinning during loading can be explained by considering the influence of external stress on the grain/variant orientation-dependent distortion energy. These direct observations of detwinning provide a good understanding of the deformation mechanisms in shape memory alloys. © 2008 American Institute of Physics.

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Citation Format(s)

Direct evidence of detwinning in polycrystalline Ni-Mn-Ga ferromagnetic shape memory alloys during deformation. / Nie, Z. H.; Peng, R. Lin; Johansson, S. et al.
In: Journal of Applied Physics, Vol. 104, No. 10, 103519, 2008.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review