TY - CONF A1 - Epishin, Alexander A1 - Linke, Thomas A1 - Brückner, Udo A1 - Nolze, Gert A1 - Fedelich, Bernard T1 - Single-crystal nickel-base superalloys: structure and mechanisms of high temperature creep T2 - BAM-Veranstaltung CY - Berlin, Germany DA - 2005-04-25 PY - 2005 AN - OPUS4-12231 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Kranzmann, Axel A1 - Linke, Thomas T1 - Microstructural and mechanical degradation of CMSX-4 under creep conditions in a wide range of temperatures and stress levels T2 - COST 538 Meeting, BAM CY - Berlin, Germany DA - 2005-04-28 PY - 2005 AN - OPUS4-12232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Link, T. A1 - Brückner, Udo T1 - Microstructural stability of CMSX-4 and CMSX-10 under high temperature creep conditions T2 - 8th Liège Conference "Materials for Advanced Power Engineering 2006" CY - Liege, Belgien DA - 2006-01-01 KW - Superalloys KW - CMSX-4 KW - Creep KW - Microstructure KW - CMSX-10 PY - 2006 SN - 3-89336-436-6 N1 - Serientitel: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology – Series title: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology IS - 53 SP - 507 EP - 520 PB - Forschungszentrum Jülich CY - Jülich AN - OPUS4-13702 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Link, T. A1 - Epishin, Alexander A1 - Klaus, M. A1 - Brückner, Udo A1 - Reznicek, A. T1 - (100) Dislocations in nickel-base superalloys: Formation and role in creep deformation N2 - α(1 0 0) Dislocations are observed in nickel-base superalloys after creep deformation at high temperatures and low stresses. They are formed in the γ/γ´ interfaces by a three step mechanism. First, primary dislocations with Burgers vector α/2(1 0 1) and 60° character are left behind in the interfaces when dislocation loops glide through the γ channels. The 60° dislocations move into edge orientation and react forming secondary dislocations α/2(1 1 0). In the third step, new primary dislocations are knit into the already existing meshes of primary and secondary dislocations, which results in hexagonal misfit dislocation networks consisting of secondary dislocations α/2(1 1 0) and tertiary dislocations α(1 0 0), both of edge type. This self-organisation process is explained by dislocation theory and crystallography. Creep deformation accelerates when the α(1 0 0) interfacial dislocations enter the γ´ phase. During their climb towards the opposite interface, they attain a characteristic rectangular shape. This shape and the importance of the α(1 0 0) super dislocations for creep deformation are discussed. KW - Superalloys KW - Creep KW - Dislocation reactions KW - Dislocation theory KW - Deformation mechanisms PY - 2005 SN - 0921-5093 SN - 1873-4936 VL - 405 IS - 1-2 SP - 254 EP - 265 PB - Elsevier CY - Amsterdam AN - OPUS4-11968 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Link, T. A1 - Brückner, Udo A1 - Fedelich, Bernard T1 - Residual Stresses in the Dendritic Structure of Single-Crystal Nickel-Based Superalloys PY - 2005 SN - 0031-918x SN - 1531-8672 VL - 100 IS - 2 SP - 192 EP - 199 PB - MAIK Nauka/Interperiodica Publ. CY - Moscow AN - OPUS4-11969 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Link, T. T1 - Mechanisms of high-temperature creep of nickel-based superalloys under low applied stresses KW - Superalloys KW - Creep PY - 2004 SN - 1478-6435 SN - 0031-8086 VL - 84 IS - 19 SP - 1979 EP - 2000 PB - Taylor & Francis CY - London AN - OPUS4-7144 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Brückner, Udo A1 - Link, T. A1 - Portella, Pedro Dolabella ED - Dias, A. T1 - Investigation of stresses in superalloys by analysis of y/y'-Microstructure T2 - 6th European Conference on Residual Stresses CY - Coimbra, Portugal DA - 2002-07-10 KW - Superalloys KW - Stress KW - Misfit KW - Rafting PY - 2002 SN - 0-87849-900-8 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum IS - 404/407 SP - 287 EP - 292 PB - Trans Tech Publ. CY - Uetikon-Zuerich AN - OPUS4-7147 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Link, T. ED - Green, K. T1 - Mechanisms of high temperature creep of nickel-base superalloys under low applied stress T2 - Superalloys 2004 / 10th International Symposium on Superalloys 2004 CY - Seven Springs, PA, USA DA - 2004-09-19 KW - Superalloys KW - Creep KW - Porosity KW - Dislocations KW - Diffusion PY - 2004 SN - 0-87339-576-X SP - 137 EP - 143 PB - TMS CY - Warrendale AN - OPUS4-7149 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Link, T. A1 - Portella, Pedro Dolabella A1 - Brückner, Udo T1 - Evolution of the gamma/gamma'-microstructure during high-temperature creep of a nickel-base superalloy KW - Nickel alloys KW - Creep KW - Mesostructure KW - Scanning electron microscopy (SEM) KW - Image analysis PY - 2000 SN - 1359-6454 SN - 1873-2453 VL - 48 SP - 4169 EP - 4177 PB - Elsevier Science CY - Kidlington AN - OPUS4-7152 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Alymov, M. I. A1 - Epishin, Alexander A1 - Nolze, Gert A1 - Link, T. A1 - Bedov, S. A1 - Ankudinov, A. B. T1 - Electron microscopy investigation of the structure of a compact extruded from nanopowder of nickel KW - EBSD KW - SAED KW - TEM KW - SEM KW - Extrusion KW - Nano-technology PY - 2007 SN - 1816-5230 VL - 2 IS - 3-4 SP - 124 EP - 129 PB - Akademperiodyka CY - Kyïv AN - OPUS4-14845 LA - rus AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Link, T. A1 - Nolze, Gert T1 - SEM investigation of interfacial dislocations in nickel-base superalloys N2 - A new technique for investigation of interfacial dislocations in nickel-base superalloys by scanning electron microscopy is presented. At high temperatures the pressure of interfacial dislocations against the γ/γ'-interface causes grooves. This 'fingerprint of the dislocation network' is visualized by deep selective etching, which removes the γ'-phase down to the γ/γ'-interface. Compared with transmission electron microscopy, the proposed method has important advantages: observation of large sample areas, no superposition of dislocations lying in different specimen depths, possibility of three-dimensional view of dislocation configurations, information about the dislocation mobility, reduced time for preparation and visualization. The method can be applied for multiphase materials where the interface is grooved by interfacial dislocations. KW - Dislocation structure KW - Interfaces KW - Nickel alloys KW - Scanning electron microscopy PY - 2007 SN - 0022-2720 SN - 1365-2818 VL - 228 IS - 2 SP - 110 EP - 117 PB - Blackwell CY - London AN - OPUS4-16039 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Linke, Thomas A1 - Brückner, Udo T1 - Microstructual stability of CMSX-4 and CMSX-10 under high temperature creep conditions T2 - 8th Liege Conference on Materials for Advanced Power Engeneering CY - Liège, Belgium DA - 2006-09-18 PY - 2006 AN - OPUS4-14481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Linke, Thomas A1 - Fedelich, Bernard A1 - Nazmy, M. T1 - Microstructural degradation of CMSX-4 during load annealing in a wide range of temperatures and stresses T2 - The Superalloys: From processing to Performance The Malcom McLean Memorial Symposium, Imperial College London CY - London, England DA - 2007-04-19 PY - 2007 AN - OPUS4-14710 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Linke, Thomas A1 - Brückner, Udo A1 - Nolze, Gert A1 - Fedelich, Bernard T1 - Single-crystal nickel-base Superalloys: structure, rafting of the y/y'-microstructure T2 - Inst. Metallische Werkstoffe CY - Bayreuth, Germany DA - 2005-03-17 PY - 2005 AN - OPUS4-12230 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Fedelich, Bernard A1 - Künecke, Georgia A1 - Epishin, Alexander T1 - Modelling of rafting and its influence in Ni-base superalloys T2 - 8th Liège Conference "Materials for Advanced Power Engineering 2006" CY - Liege, Belgium DA - 2006-01-01 KW - Superalloys KW - Modelling KW - Rafting KW - Creep KW - Single crystals PY - 2006 SN - 3-89336-436-6 N1 - Serientitel: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology – Series title: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology IS - 53 SP - 475 EP - 484 PB - Forschungszentrum Jülich CY - Jülich AN - OPUS4-13983 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klingelhöffer, Hellmuth A1 - Epishin, Alexander A1 - Link, T. T1 - Low cycle fatigue of the single-crystal nickel-base superalloy CMSX-4 - Anistropy and effect of creep damage KW - Single crystal nickel-base superalloys KW - CMSX-4 KW - Creep KW - Low cycle fatigue PY - 2009 SN - 0025-5300 VL - 51 IS - 5 SP - 291 EP - 294 PB - Hanser CY - München AN - OPUS4-19430 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Link, T. A1 - Fedelich, Bernard A1 - Brückner, Udo A1 - Ulbricht, Alexander T1 - Misfit stresses in superalloys: New effects on dislocation movement and X-ray diffraction T2 - DGM-Arbeitskreis "Mechanisches Werkstoffverhalten bei hoher Temperatur" CY - Jülich, Germany DA - 2009-10-07 PY - 2009 AN - OPUS4-20596 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Link, T. A1 - Brückner, Udo A1 - Klingelhöffer, Hellmuth A1 - Portella, Pedro Dolabella T1 - The effect of high temperature creep damage on low cycle fatigue of CMSX-4 T2 - 8th Liège Conference "Materials for Advanced Power Engineering 2006" CY - Liege, Belgium DA - 2006-01-01 KW - Superalloys KW - CMSX-4 KW - Single crystal KW - Creep KW - Fatigue PY - 2006 SN - 3-89336-436-6 N1 - Serientitel: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology – Series title: Schriften des Forschungszentrums Jülich - Reihe Energietechnik / Energy Technology IS - 53 SP - 317 EP - 325 PB - Forschungszentrum Jülich CY - Jülich AN - OPUS4-13701 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Link, T. A1 - Brückner, Udo A1 - Fedelich, Bernard A1 - Portella, Pedro Dolabella ED - Green, K. T1 - Effects of segregation in nickel-base superalloys: dendritic stresses T2 - Superalloys 2004 / 10th International Symposium on Superalloys 2004 CY - Seven Springs, PA, USA DA - 2004-09-19 KW - Nickel-base superalloys KW - Dendritic structure KW - Segregation KW - Residual stresses PY - 2004 SN - 0-87339-576-X SP - 537 EP - 543 PB - TMS CY - Warrendale AN - OPUS4-7150 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Brückner, Udo A1 - Portella, Pedro Dolabella A1 - Link, T. T1 - Influence of small rhenium additions on the lattice spacing of nickel solid solution N2 - The influence of small rhenium additions on the lattice spacing of a nickel solid solution was investigated using a nickel–rhenium single crystal with an axial macrosegregation of rhenium. The effect of rhenium on the lattice spacing of the nickel solid solution was found to be similar to that of tungsten. KW - Nickel alloys KW - Crystallography PY - 2003 DO - https://doi.org/10.1016/S1359-6462(02)00436-0 SN - 1359-6462 SN - 1872-8456 VL - 48 IS - 4 SP - 455 EP - 459 PB - Elsevier CY - Oxford AN - OPUS4-2278 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Link, T. A1 - Brückner, Udo A1 - Portella, Pedro Dolabella T1 - Damage in single-crystal nickel-base superalloys under high temperature creep T2 - Rolls Royce Deutschland GmbH CY - Dahlewitz, Germany DA - 2002-12-10 PY - 2002 AN - OPUS4-6104 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Brückner, Udo A1 - Epishin, Alexander A1 - Link, T. A1 - Portella, Pedro Dolabella ED - Böttger, A. T1 - Creep induced evolution of internal stresses and structure in a single crystal nickel-base superalloy N2 - Changes in the structure of single-crystal (SC) superalloy SRR99 during creep at 980 °C and 200 MPa were investigated. Geometrical parameters of the y/y'-microstructure, y/y'-misfit, stresses in the phases and local misorientation of the structure were determined at defined points of the dendritic structure by use of X-ray diffraction (XRD), wavelength dispersive X-ray spectroscopy (WDXS), scanning (SEM) and transmission (TEM) electron microscopy. Correlation of the microstructural period and local misorientation of the structure with creep strain were found. T2 - 5th European Conference on Residual Stresses CY - Delft-Noordwijkerhout, the Netherlands DA - 1999-10-28 KW - Creep KW - Dendrite KW - Misfit KW - Segregation KW - Superalloys PY - 2000 UR - http://cat.inist.fr/?aModele=afficheN&cpsidt=1381837 SN - 0-87849-855-9 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum IS - 347/349 SP - 363 EP - 367 PB - Trans Tech Publ. CY - Uetikon-Zürich AN - OPUS4-7151 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Brückner, Udo A1 - Epishin, Alexander A1 - Link, T. A1 - Fedelich, Bernard A1 - Portella, Pedro Dolabella ED - Denis, S. T1 - Dendritic stresses in Nickel-base superalloys T2 - 7th International Conference on Residual Stresses CY - Xi'an, China DA - 2004-06-14 KW - Single crystal KW - Superalloy KW - Dendritic structure KW - Residual stresses KW - X-ray diffraction KW - Nickelbasis-Superlegierung KW - Dendritisches Gefüge KW - Röntgenbeugung PY - 2005 SN - 0-87849-969-5 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum IS - 490/491 SP - 497 EP - 502 PB - Trans Tech Publ. CY - Uetikon-Zürich AN - OPUS4-7148 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Linke, Thomas A1 - Brückner, Udo A1 - Klingelhöffer, Hellmuth A1 - Portella, Pedro Dolabella T1 - The effect of high temperature creep damage on low cycle fatigue in CMSX-4 T2 - 8th Liege Conference on Materials für Advanced Power Engeneering CY - Liège, Belgium DA - 2006-09-18 PY - 2006 AN - OPUS4-14482 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Link, T. A1 - Klingelhöffer, Hellmuth A1 - Fedelich, Bernard A1 - Brückner, Udo A1 - Portella, Pedro Dolabella T1 - New technique for characterisation of microstructural degradation under creep: application to the Nickel-Base Superalloy CMSX-4 T2 - 11th International Conference on Creep and Fracture of Engineering Materials and Structures CY - Bayreuth, Germany DA - 2008-05-04 PY - 2008 AN - OPUS4-16675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander A1 - Link, T. A1 - Klingelhöffer, Hellmuth A1 - Fedelich, Bernard A1 - Portella, Pedro Dolabella T1 - Creep damage mechanisms of single-crystal nickel base superalloys T2 - 2nd International ECCC Conference, Creep & Fracture in High Temperature Components - Design & Life Assessment CY - Dübendorf, Switzerland DA - 2009-04-21 PY - 2009 AN - OPUS4-17576 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Epishin, Alexander A1 - Link, T. A1 - Klingelhöffer, Hellmuth A1 - Fedelich, Bernard A1 - Portella, Pedro Dolabella T1 - Creep damage of single-crystal nickel base superalloys: mechanisms and effect on low cycle fatigue N2 - The main mechanisms of creep damage of single-crystal nickel-base superalloys are the loss of the interface coherency, coarsening of the γ / γ'-microstructure, precipitation of topologically closed packed phases and growth of porosity. This degradation deteriorates the mechanical properties such as yield stress, creep lifetime and especially low-cycle fatigue life, which can be reduced nearly by a factor of 10. The degradation kinetics during creep was characterised quantitatively on the superalloy CMSX-4. A new non-destructive testing technique was applied to cover a wide test parameter range with few specimens in a relatively short time: repeated load annealing of wedge shaped specimens. KW - Creep damage KW - Nickel-base superalloys KW - Low-cycle fatigue KW - Rafting KW - Porosity KW - Prior exposure PY - 2010 DO - https://doi.org/10.3184/096034009X12603595726283 SN - 0960-3409 VL - 27 IS - 1 SP - 53 EP - 59 PB - Science Reviews CY - St. Albans, Herts. [u.a.] AN - OPUS4-23912 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Epishin, Alexander A1 - Link, T. A1 - Klingelhöffer, Hellmuth A1 - Fedelich, Bernard A1 - Portella, Pedro Dolabella ED - S.R. Holdsworth, ED - I.A. Shibli, T1 - Creep damage mechanisms of single-crystal Nickel base superalloys T2 - 2nd ECCC Creep Conference CY - Zurich, Switzerland DA - 2009-04-21 KW - Creep damage KW - Nickel-base superalloys PY - 2009 SN - 978-1-60595-005-1 SP - 692 EP - 701 PB - DEStech Publications, Inc. AN - OPUS4-19448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -