TY - CONF A1 - Feldmann, Titus A1 - Fedelich, Bernard A1 - Epishin, Alexander T1 - Simulation von Porenschließung durch Kriechen der Einkristalllegierung CMSX-4 unter heiß-isostatischem Pressen N2 - The investigation of creep behavior of the single crystal superalloy CMSX-4 at 1288°C is important for the understanding of deformations mechanisms under hot isostatic pressing (HIP). This treatment is used to increase the lifetime of single crystal superalloys by reducing the number of cavities. The understanding of the internal processes during this treatment is still limited due to the material being not single-phase at room temperature, the extreme conditions of HIP and the complexity of the material. The result of predicting the pore shrinkage rate using classical crystal plasticity was not satisfying. A more complex model has been implemented, now taking the heterogeneity of dislocation sources into account. By introducing a dislocation density, one can describe the transport, nucleation and interaction of dislocations. T2 - DGM-AK-Sitzung Mechanisches Verhalten bei hoher Temperatur CY - BAM, Unter den Eichen, Berlin, Germany DA - 20.9.2017 KW - Einkristalllegierung KW - Kristallplastizität PY - 2017 AN - OPUS4-42035 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feldmann, Titus A1 - Fedelich, Bernard A1 - Epishin, Alexander A1 - Charmi, Amir T1 - Simulation of creep of a single crystal superalloy considering the transport of dislocations N2 - The investigation of creep behavior of the single crystal superalloy CMSX-4 at 1288°C is important for the understanding of deformations mechanisms under hot isostatic pressing (HIP). This treatment is used to increase the lifetime of single crystal superalloys by reducing the number of cavities. The understanding of the internal processes during this treatment is still limited due to the material being not single-phase at room temperature, the extreme conditions of HIP and the complexity of the material. The result of predicting the pore shrinkage rate using classical crystal plasticity was not satisfying. A more complex model has been implemented, now taking the heterogeneity of dislocation sources into account. By introducing a dislocation density, one can describe the transport, nucleation and interaction of dislocations. T2 - ICMM5 CY - Rome, Italy DA - 14.6.2017 KW - Einkristalllegierung KW - Kristallplastizität PY - 2017 AN - OPUS4-42036 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -