TY - JOUR A1 - Kiyak, Yusuf A1 - Fedelich, Bernard A1 - May, Thomas A1 - Pfennig, Anja T1 - Simulation of crack growth under low cycle fatigue at high temperature in a single crystal superalloy T2 - Engineering fracture mechanics N2 - Crack growth tests have been performed at 950 °C with Single Edge Notch specimens of the Ni-based single crystal superalloy PWA1483. In particular, several orientations and frequencies have been investigated, thus allowing the assessment of the influence of these parameters on the crack growth rate. In addition, oxidation experiments have been carried out to characterize the kinetics of the outer oxide scale growth at the same temperature. On the other side, crack growth has been simulated with the Finite Element program ABAQUS in real test conditions by the node release technique. The nodes are released according to the measured crack growth rate. The simulation results are compared with the test results on the basis of the computed Crack Tip Opening Displacement (CTOD). For this purpose, the crack is propagated until a stabilized value of the CTOD is obtained. This is usually the case when the crack has crossed the initial plastic zone. The procedure provides an evaluation of the effects of cycle frequency, crystal orientation, plasticity and oxide induced crack closure. PB - Elsevier Science CY - Kidlington KW - Finite element analysis KW - Low cycle fatigue KW - Creep-fatigue KW - Crack growth KW - Nickel-based superalloys PY - 2008 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/16690 AN - OPUS4-16690 SN - 0013-7944 SN - 1873-7315 VL - 75 IS - 8 SP - 2418 EP - 2443 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany