TY - JOUR A1 - Silverstein, R. A1 - Eliezer, D. A1 - Böllinghaus, Thomas T1 - Hydrogen-trapping mechanisms of TIG-welded 316L austenitic stainless steels N2 - The interaction of hydrogen with various tungsten-inert-gas-welded austenitic stainless steels’ (AUSS) microstructure is studied by means of desorption/absorption analysis and microstructure observations. One of the limitations of welding is created by the presence of hydrogen in the weld, which can shorten the steel’s service life. The local hydrogen concentration, trapping, and its distribution along the welded samples were studied by thermal desorption spectrometry and were supported by X-ray diffraction (XRD) and electronic microstructural observations. Hydrogen content demonstrated a dependence on the welding zone. It was found that hydrogen distribution, and accepted microstructure during welding, played a significant role in the trapping mechanism of 316L AUSS. XRD analysis revealed residual stresses which were caused due to the presence of hydrogen in c-phase. It was shown that the austenite microconstituents inside 316L can have a crucial effect in preventing hydrogen-assisted cracking phenomenon. The effects of AUSS microstructure on hydrogen absorption and desorption behavior are discussed in detail. KW - Thermal-desorption spectroscopy KW - Ferritic steels KW - Strain rates KW - Duplex KW - Embrittlement KW - Diffusion KW - Titanium KW - Alloys KW - Behavior PY - 2018 U6 - https://doi.org/10.1007/s10853-018-2349-6 SN - 1573-4803 SN - 0022-2461 VL - 53 IS - 14 SP - 10457 EP - 10468 PB - Springer Science + Business Media CY - Dordrecht AN - OPUS4-46833 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -