Hydrogen diffusivity in FeAl
نویسندگان
چکیده
منابع مشابه
POINT DEFECTS IN FeAl
Point defects in annealed B2-phase FeAl samples in the range 47-53 at.% Fe were studied using 57Fe Mössbauer spectroscopy. Spectra were analyzed using local environment models according to which point defects in atomic shells close to probe atoms induce shifts in the nuclear monopole interaction. For well-annealed samples, better results were obtained assuming only the presence of FeAl antisite...
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Neutron diffraction was used to measure the residual stress distribution in an FeAl weld overlay on steel. It was found that the residual stresses accumulated during welding were essentially removed by the post-weld heat treatment that was applied to the specimen; most residual stresses in the specimen developed during cooling following the post-weld heat treatment. The experimental data were c...
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We describe the results of experiments on the use of multiple approximations in a linear cryptanalytic attack on FEAL; we pay particular attention to FEAL-8. While these attacks on FEAL are interesting in their own right, many important and intriguing issues in the use of multiple approximations are brought to light.
متن کامل1 Self evaluation of FEAL - NX
1 Evaluation of security 1.1. Differential cryptanalysis In extending differential cryptanalysis, Aoki , Kobayashi, and Moriai [1] greatly reduced the computational amount needed [2]. They determined that differential cryptanalysis could not be applied to FEAL with more than 32 rounds. Biham et al. [3] proposed a new cyptanalysis of Skipjack [4] using impossible differentials. Although regular ...
متن کاملDISORDERING OF FeAl BY MECHANICAL MILLING
Point defect concentrations in milled samples of stoichiometric FeAl were obtained by Mssbauer measurements. Mssbauer spectra consisted of a single absorption dip with broadening attributed to unresolved hyperfine interactions. A local environment model was used to analyze spectra that allowed for defect-induced changes in monopole interactions at Fe probe atoms due to elementary defects in t...
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ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 1997
ISSN: 0250-4707,0973-7669
DOI: 10.1007/bf02745080