Löslichkeit und Diffusion von Wasserstoff in Eisenlegierungen

Abstract

Ermittlung der Gleichgewichtslöslichkeit und der Diffusionsgeschwindigkeit von Wasserstoff in Stahlproben nach einem Effusionsverfahren. Abhängigkeit der Löslichkeit und der Beweglichkeit vom Legierungsgehalt und der Glühtemperatur. Auswahl geeigneter Glühbedingungen zur Bestimmung des Wasserstoffgehaltes von Stahl‐ und Schweißproben nach dem Warmextraktionsverfahren. Wasserstoffgehalt in einer Induktorwelle in Abhängigkeit vom Radius und der Glühbehandlung.

Welding Metallurgy of Stainless Steels

“…48 according to Rapatz [8], findings of Schenk and Wunsch [91] and Schwarz and Zitter [92]. 48 according to Rapatz [8], findings of Schenk and Wunsch [91] and Schwarz and Zitter [92].…”

“…The influence of other elements on the hydrogen solubility ofiron have been investigated by Schwarz and Zitter [92]. Carbon, silicon, chromium and nickel produce only a slight increase in the hydrogen solubility of iron.…”

“…The influence of alloying elements on the diffusion coefficient of hydrogen in pure iron has been investigated by Schwarz and Zitter [92]. At higher temperatures in the range of the a-y transformation of iron, differences are mainly caused by microstructural changes, with diffusion being more rapid in cubic body centered ferrite lattice than in cubic face centered austenite lattice.…”

“…DeLong diagram [91][92][93][94]200 Delta Ferrite 3, 7-10 -composition of 133 -definition 9 -grain formation of 81-88 -precipitation of primary 6-10, 56-58 -residual 65, 66, 88, 160 -solution annealing of 15,52,103,199,207 Delta-gamma transformation 8-12 18 19 23,26,[80][81][82][83][84][85][86],82,146,147 Deoxidation [140][141][142][143]178,185,174,226,[130][131][132][133][134][135]178,185,196,206,208,211,214,221,222,228,237,238 Epsilon phase 31,34,35 Eta pha...…”

Hydrogen-Diffusion Mechanical Treatment of Structural Materials

“…High-level deformations (with cutting of the metal) lead to ruptures of the crystal lattice and to the formation of defects in the form of microcavities in the continuous material. The results of investigations carried out in [9] confirm the penetration of hydrogen into the region of plastic strains. Thus, it was shown that the increase in the level of strains by 1% causes an increase in the permeability of hydrogen into steel P H by 100%.…”