The nature of deformation effects in metal–hydrogen systems

Spivak, L. V.; Skryabina, N. E.; Fruchart, D.; Cagnon, Laurent

doi:10.1016/j.jallcom.2005.02.099

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2009

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“…mechanical ones, first in the solid solution regime, and furthermore after the hydride phase formation. We have investigated hydrogenation issue in different classes of alloys -from solid solution to metal hydride transitions -either having martensite phase transformation (such as TiNi-type alloys) [1], or exhibiting short range atom ordering such as amorphous to nanocrystalline materials [2]. With this respect, Fe-Cr alloys with -phase type structure form a class of materials interesting to consider for hydrogen treatment.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen effect on the sigma-phase in Fe53.8Cr46.2

Cieślak

Costa

Dubiel

et al. 2009

Journal of Alloys and Compounds

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Investigation of the stability and properties of a sigma-phase type compound Fe 53.8 Cr 46.2 after electrochemical hydrogen treatment was made using X-ray diffraction and 57 Fe Mössbauer spectroscopy techniques. The amount of the hydrogen uptake was estimated to be equal to ∼1.2H per unit formula, and its presence leads to an anisotropic cell parameter expansion. However, the hydrogenated state appears as metastable with reference to the aged samples analyzed a few days to months after loading with hydrogen.

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Section: Introductionmentioning

confidence: 99%