In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress

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

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Author(s)

  • R. Lin Peng
  • Y. D. Wang
  • Z. H. Nie
  • E. C. Oliver
  • S. Johansson
  • Y. D. Liu
  • J. D. Jorgensen
  • J. Fieramosca

Detail(s)

Original languageEnglish
Article number104256
Journal / PublicationJournal of Physics Condensed Matter
Volume20
Issue number10
Publication statusPublished - 12 Mar 2008
Externally publishedYes

Abstract

This paper deals with the experimental study of stress-induced phase transformation in a polycrystalline Ni-Mn-Ga alloy under uniaxial compression and its powder under hydrostatic compression. In situ neutron diffraction experiments were employed to follow changes in the structure and lattice strains caused by the applied stresses. Large lattice strains that are dependent on the lattice planes or grain orientations were observed in the parent Heusler phase for both the bulk material and the powder sample. The development of such anisotropic strains and the influence of external load conditions are discussed in the paper. © IOP Publishing Ltd.

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Citation Format(s)

In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress. / Peng, R. Lin; Wang, Y. D.; Nie, Z. H.; Oliver, E. C.; Johansson, S.; Liu, Y. D.; Ren, Y.; Jorgensen, J. D.; Fieramosca, J.

In: Journal of Physics Condensed Matter, Vol. 20, No. 10, 104256, 12.03.2008.

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