The applicability of the structural unit model, developed for tilt boundaries by Sutton and Vitek (1983), to (001) twist boundaries in f.c.c. metals is investigated. The model is found to be useful in discussing the continuity of boundary structure with misorientation and the Burgers vectors ...
The atomic structures of all the boundaries studied were found to be very similar for both the descriptions of atomic interactions. This suggests that the principal features of the structure of (111) twist boundaries found in this study are common to all f.c.c. metals. At the same time it...
Here, we have employed single-walled carbon nanotubes as test tubes, and an ‘atomic injector’ coupled with aberration-corrected transmission electron microscopy, to enable in situ imaging of the initial steps of nucleation at the atomic scale. With three different metals we observed three main ...
Consequently, applying them to the calculation of the atomic size factor(λ=0.1076)confirms thatAl88Y7Fe5follows the rule of atomic size ratio for glass formation. 展开 关键词: Aluminium Amorphous metals Extended X-ray absorption fine structure spectroscopy Crystal structure X-ray diffraction ...
Models for the structure of amorphous metals P. H. Gaskell Pages 5-49 X-ray and neutron diffraction experiments on metallic glasses J. F. Sadoc, C. N. J. Wagner Pages 51-92 Mössbauer spectroscopy applied to amorphous metals U. Gonser, R. Preston Pages 93-126 Defects an...
From the XRD data, we also derive the pair distribution function of both alloys, which allows us to correlate the atomic structure with the Invar effect in these BMGs. We further show that the Invar effect is not just a macroscopic effect but has a clear atomistic equivalent in the average...
摘要: Authors carried out a neutron diffraction study of the structure of VMn, TiFe and ScCo alloys. Authors measured the temperature dependence of the paramagnetic susceptibilities. See also English translation in Phys Metals Metallogr v 28 n 6 1969 p 22-7...
Such large concentrations of BO3, AlO5 and AlO6 species are consistent with the highest field strength of Be among all alkali and alkaline earth metals. The compositional variation of cation speciation, when combined with bond valence calculations, indicates that most of the oxygens in these ...
Understanding the properties and structure of metallic glasses at the atomic level Liquids and glasses have been well known to human kind for millennia. And yet major mysteries remain in the behavior of glasses and liquids at the atomic l... T Egami - 《Jom Journal of the Minerals Metals &...
Exposure to high levels of metals such as lead, zinc and copper can have a severe impact on human health. This is an issue that humanity has experienced since the production of metal objects began. Both mining and processing of metal can also enrich soil and water in noxious substances, ...