TY - GEN A1 - Chen, W. A1 - Darowski, N. A1 - Zizak, I. A1 - Schumacher, G. A1 - Klingelhöffer, Hellmuth A1 - Wanderka, N. A1 - Neumann, W. ED - Chandra, T. ED - Torralba, Jose M. ED - Sakai, T. T1 - Measurement of Gamma/Gamma' Lattice Mismatch in Creep Deformed SIngle Crystal Superalloy SC16 Using Synchrotron X-Radiation T2 - THERMEC 2003 T2 - International Conference on Processing & Manufacturing of Advanced Materials CY - Leganés, Spain DA - 2003-07-07 KW - Superalloy KW - Lattice mismatch KW - High temperature KW - Creep deformed PY - 2003 SN - 0-87849-919-9 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum IS - 426-432/5 SP - 4555 EP - 4560 PB - Trans Tech Publ. CY - Uetikon-Zürich AN - OPUS4-2790 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Darowski, N. A1 - Zizak, I. A1 - Schumacher, G. A1 - Wanderka, N. A1 - Klingelhöffer, Hellmuth A1 - Chen, W. A1 - Neumann, W. T1 - Lattice mismatch in creep-deformed single crystal superalloy SC16 T2 - BESSY highlights - annual report 2002 PY - 2003 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2002.pdf#page=283 SN - 0179-4159 SP - 283 EP - 285 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-2491 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Chen, W. A1 - Darowski, N. A1 - Zizak, I. A1 - Schumacher, G. A1 - Klingelhöffer, Hellmuth A1 - Neumann, W. T1 - Lattice distortion in precipitates of single crystal superalloy SC16 under creep deformation JF - Nuclear instruments and methods in physics research B N2 - Specimens of single crystal superalloy SC16 were creep deformed at 1223 K along [0 0 1] up to ±0.5% creep strain using stresses of -150 MPa and +150 MPa, respectively. Line widths and peak positions of superlattice reflections were measured by means of X-ray diffraction parallel and perpendicular to the load axis in the temperature range between 293 K and 1173 K. The line widths were found to decrease with the increase of temperature for both directions on the two specimens after tensile and compressive creep deformation. After both kinds of creep deformation the crystal lattice showed tetragonal distortion which decreased with increasing temperature. The tetragonality after tensile creep deformation was larger than unity while it was smaller than unity after compressive creep deformation. The peak positions and widths restored after cooling back to room temperature. The experimental results can qualitatively be explained by the creation of dislocations during deformation and their anisotropic arrangement at the γ/γ' interfaces. KW - Superalloys KW - Creep deformation KW - Lattice distortion PY - 2006 DO - https://doi.org/10.1016/j.nimb.2005.12.032 SN - 0168-583X SN - 1872-9584 VL - 246 IS - 1 SP - 201 EP - 205 PB - Elsevier CY - Amsterdam AN - OPUS4-12498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Darowski, N. A1 - Zizak, I. A1 - Schumacher, G. A1 - Klingelhöffer, Hellmuth A1 - Chen, W. A1 - Neumann, W. T1 - Temperature dependence of x-ray intensity profile FWHM of the gamma' phase in the creep-deformed single crystal superalloy SC16 JF - Journal of physics D N2 - High-resolution diffraction using synchrotron x-ray radiation was applied to study γ´ precipitates with an L12 superlattice crystal structure in the single crystal superalloy SC16 after creep deformation at 1223 K with a creep strain of ±0.5% for tensile and compressive loads, respectively. The measurements of full width at half maximum (FWHM) of 001 and 100 γ´ superlattice reflections were performed at various temperatures from ambient temperature to 1173 K in vacuum. The experimental results revealed that the FWHM of both reflections decrease with increasing temperature. It is well-known that changes in particle size and lattice distortion in materials could lead to a variation of FWHM. The observed behaviour is discussed in the light of both the above-mentioned aspects. The decrease in the peak width is mainly attributed to the temperature dependence of the internal strain state. KW - Creep deformation KW - Synchrotron x-ray radiation PY - 2005 DO - https://doi.org/10.1088/0022-3727/38/10A/038 SN - 0022-3727 SN - 1361-6463 VL - 38 IS - 10A SP - A200 EP - A203 PB - IOP Publ. CY - Bristol AN - OPUS4-11967 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Schumacher, G. A1 - Darowski, N. A1 - Zizak, I. A1 - Klingelhöffer, Hellmuth A1 - Neumann, W. T1 - Two-stage relaxation of damage structure in strongly creep-deformed single crystal superalloy SC16 measured by means of X-ray diffraction JF - Scripta materialia KW - Superalloys KW - SC16 KW - Creep-deformation KW - Relaxation KW - X-ray diffraction PY - 2009 DO - https://doi.org/10.1016/j.scriptamat.2008.09.009 SN - 1359-6462 SN - 1872-8456 VL - 60 IS - 2 SP - 88 EP - 91 PB - Elsevier CY - Oxford AN - OPUS4-18304 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schumacher, G. A1 - Darowski, N. A1 - Zizak, I. A1 - Klingelhöffer, Hellmuth A1 - Chen, W. A1 - Neumann, W. ED - Chandra, T. T1 - Time dependence of y/y' Lattice Mismatch in Creep-deformed Single Crystal Superalloy SC16 at 1173 K T2 - THERMEC 2006 T2 - 5th International Conference on Processing & Manufacturing of Advanced Materials CY - Vancouver, Canada DA - 2006-07-04 KW - Superalloys KW - Lattice distortion KW - SC16 KW - Creep-deformation KW - X-ray diffraction PY - 2007 SN - 0-87849-428-6 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum VL - 539-543/3 IS - 539/543 SP - 3059 EP - 3063 PB - Trans Tech Publ. CY - Stafa-Zürich AN - OPUS4-14032 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schumacher, G. A1 - Darowski, N. A1 - Zizak, I. A1 - Klingelhöffer, Hellmuth A1 - Chen, W. A1 - Neumann, W. ED - Chandra, T. T1 - Temperature Dependence of Lattice Distortion in Strongly Creep-deformed Single Crystal Superalloy SC16 T2 - THERMEC 2006 T2 - 5th International Conference on Processing & Manufacturing of Advanced Materials CY - Vancouver, Canada DA - 2006-07-04 KW - Superalloys KW - SC16 KW - Lattice distortion KW - Creep-deformation KW - X-ray-diffraction PY - 2007 SN - 0-87849-428-6 SN - 0255-5476 N1 - Serientitel: Materials science forum – Series title: Materials science forum VL - 539-543/3 IS - 539/543 SP - 3048 EP - 3052 PB - Trans Tech Publ. CY - Stafa-Zürich AN - OPUS4-14033 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -