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In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress
Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering, Engineering Materials.
Key Loaboratory for anisotropy and Texture of Materials Northeastern University, Shenyang.
Key Laboratory for Anisotropy and Texture of Materials Northeastern University, Shenyang.
ISIS Facility CCLRC rutherford Appleton Loaboratory Chilton, Didcot.
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2008 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, Vol. 20, no 10Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2008. Vol. 20, no 10
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-38633DOI: 10.1088/0953-8984/20/10/104256Local ID: 45126OAI: diva2:259482
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2011-01-10

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Peng, RuJohansson, Sten
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