Hydrogen Diffusion and Strain Distribution in Amorphous Fe-Based Ribbons

Abstract

The paper deals with the study of strain distribution in hydrogenated FeB ribbons prepared by rapid quenching from the melt. Hydrogen atoms introduced during the process of hydrogenation induce internal stresses in the sample. This causes bending of a one side hydrogenated non-fixed ribbon. The ribbon bending reflects hydrogen concentration. When the ribbon is dehydrogenated the ribbon shape is fully restored for the studied Fe 85 B 15 sample. A simple theoretical model is proposed to describe dependence of ribbon bending on the hydrogen concentration during process of hydrogenation as well as in the process of spontaneous dehydrogenation. A proposed theoretical model is in a good agreement with experimental results. Its fitting to experimental data provides important information on the local enlargement of the space around introduced hydrogen atoms.

Cluster-Related Phenomena in the Properties and Transformations of Transition Metal-Based Glassy Alloys

“…As the chemical character of glassy alloys is inherited from the crystalline host metal, it is expected that in Fe-based glasses (where the net heat of solution is positive) the H solubility is low (see also Figure 33 and Table 2) [120][121][122][123][124][126][127][128].…”

Thermopower Monitoring of Relaxation and Devitrification in Fe-Based Glassy Alloys

“…This is the purpose of the present paper. The measurements were performed on Fe-B, and FeNi-B glassy samples, because of their well known thermal stability, and the previous study of their stress state [5,6]. Isothermal heat treatments were carried out, resulting in either solely structural relaxation, or crystallization.…”