TY - CONF A1 - Mente, Tobias A1 - Böllinghaus, Thomas A2 - Somerday, B. P. A2 - Sofronis, P. T1 - Mesoscale Numerical Simulation of Hydrogen-Assisted Cracking in Duplex Stainless Steels T2 - Materials Performance in Hydrogen Environments (IHC2016) N2 - A two-dimensional numerical mesoscale model has been created representing a microstructure of a typical 2205/1.4462 duplex stainless steel to further elucidate the mechanisms of hydrogen-assisted crack initiation and propagation in multiphase non-hydride forming metallic microstructures. Hydrogen-assisted cracking (HAC) was simulated by considering different stress and strain behavior as well as different diffusion behavior in both phases. For simulation of crack initiation and propagation, the element elimination technique has been applied. The model allows the simulation of path-free crack propagation which contributes to a better understanding of the HAC process in two-phase microstructures. As a particular result, the analyses revealed that a global macroscopic elastic deformation might already cause plastic deformation in both phases entailing respective HAC. PB - The American Society of Mechanical Engineers (ASME) CY - New York T2 - International Hydrogen Conference CY - Jakson Lake Lodge, Wyoming, USA DA - 11.09.2016 KW - Computer simulation KW - Cracking (Materials) KW - Fracture (Process) KW - Hydrogen KW - Stainless steel PY - 2017 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/45680 AN - OPUS4-45680 SN - 978-0-7918-6138-7 SP - 589 EP - 596 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany