In situ neutron diffraction study of micromechanical interactions and phase transformation in Ni-Mn-Ga alloy under uniaxial and hydrostatic stress.
Journal Article
·
· J. Phys.: Cond. Matter
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.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- NSF; National Natural Science Foundation fo China; Swedish Research Council; European Commission
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1000198
- Report Number(s):
- ANL/MSD/JA-68448
- Journal Information:
- J. Phys.: Cond. Matter, Journal Name: J. Phys.: Cond. Matter Journal Issue: 2008 Vol. 20; ISSN 0953-8984
- Country of Publication:
- United States
- Language:
- ENGLISH
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