TY - JOUR A1 - Dabah, Eitan A1 - Kannengießer, Thomas A1 - Eliezer, D. A1 - Böllinghaus, Thomas T1 - In situ analysis of hydrogen behaviour in stainless steels by high energy synchrotron radiation JF - Materials science and engineering A N2 - Hydrogen generally causes lattice distortions and phase transformations when introduced into a metal matrix. The present contribution provides a report of first in situ investigations of hydrogen effects on the lattice of the austenite and the martensite phase in a supermartensitic stainless steel using hard synchrotron radiation for respective energy dispersion diffraction measurements. Lattice distortions, such as the planar spacing expansion, have been monitored during the complete hydrogen effusion process over 24 h and are directly correlated to the dissolved hydrogen in the metal matrix. Among other results, it turned out that hydrogen at the introduced concentration level causes a reversible lattice expansion and after hydrogen effusion the lattice nearly regained its original dimensions. Hydrogen much more significantly affects the austenite phase with respect to lattice expansion than the martensite phase, but no phase transformations occur during the hydrogen desorption process. KW - Hydrogen diffusion KW - Solubility KW - Lattice distortions KW - Energy dispersive X-ray diffraction PY - 2011 DO - https://doi.org/10.1016/j.msea.2010.10.090 SN - 0921-5093 SN - 1873-4936 VL - 528 IS - 3 SP - 1608 EP - 1614 PB - Elsevier B.V. CY - Amsterdam AN - OPUS4-22849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -