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

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

doi:10.1088/0953-8984/20/10/104256

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

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

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4 Citations (Scopus)

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.

Original language	English
Article number	104256
Journal	Journal of Physics Condensed Matter
Volume	20
Issue number	10
DOIs	https://doi.org/10.1088/0953-8984/20/10/104256
Publication status	Published - 12 Mar 2008
Externally published	Yes

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Peng, R. L., Wang, Y. D., Nie, Z. H., Oliver, E. C., Johansson, S., Liu, Y. D., Ren, Y., Jorgensen, J. D., & Fieramosca, J. (2008). In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress. Journal of Physics Condensed Matter, 20(10), Article 104256. https://doi.org/10.1088/0953-8984/20/10/104256

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

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.",

author = "Peng, {R. Lin} and Wang, {Y. D.} and Nie, {Z. H.} and Oliver, {E. C.} and S. Johansson and Liu, {Y. D.} and Y. Ren and Jorgensen, {J. D.} and J. Fieramosca",

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T1 - In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress

AU - Peng, R. Lin

AU - Wang, Y. D.

AU - Nie, Z. H.

AU - Oliver, E. C.

AU - Johansson, S.

AU - Liu, Y. D.

AU - Ren, Y.

AU - Jorgensen, J. D.

AU - Fieramosca, J.

PY - 2008/3/12

Y1 - 2008/3/12

N2 - 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.

AB - 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.

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VL - 20

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 10

M1 - 104256

ER -

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

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