Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Ralf Schlesiger"'
Autor:
Guido Schmitz, Ralf Schlesiger, Lei Zheng, A. Hamou, Mohammed Reda Chellali, B. Bakhti, Jozef Janovec
Publikováno v:
Acta Materialia. 103:754-760
Grain boundary segregation and segregation kinetics are investigated by means of atom probe tomography in a binary Nanocrystalline nickel-bismuth alloy. Gibbsian excess and width of segregation layers at grain boundary are quantitatively determined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d577fac50a37555eb433f52ede75f9b
https://doi.org/10.1016/j.actamat.2015.11.003
https://doi.org/10.1016/j.actamat.2015.11.003
Publikováno v:
Applied Surface Science. 337:90-104
Isochronal and isothermal plasticity after thermal pre-treatments are obtained by tensile tests to characterize the embrittling behaviors of Ni(Bi) alloy. Both isochronal and isothermal plasticity show evident minima. Fractography observed by scannin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fda99efc7604e35537f12dc3bb10aa2
https://doi.org/10.1016/j.apsusc.2015.02.068
https://doi.org/10.1016/j.apsusc.2015.02.068
Autor:
Bence Parditka, Zoltán Balogh, Guido Schmitz, Patrick Stender, Gerd Hendrik Greiwe, Attila Csik, Ralf Schlesiger, Gábor A. Langer, Mohammed Ibrahim, Zoltán Erdélyi
Publikováno v:
Acta Materialia. 76:306-313
The nucleation of the Cu3Si phase was studied on sputter-deposited Cu/Si/Cu trilayered specimens both in curved and planar geometry. Two experimental methods, atom probe tomography and secondary neutral mass spectrometry, independently confirmed that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13856da3309daa06fd82fa4c5ac683f8
https://doi.org/10.1016/j.actamat.2014.05.006
https://doi.org/10.1016/j.actamat.2014.05.006
Publikováno v:
Scripta Materialia. 68:825-828
The minimum ductility of Ni(Bi) alloy caused by isothermal annealing at 750 °C or 650 °C is determined through tensile tests at room temperature. Tensile samples with minimum ductility display intergranular facets. Strong grain-boundary segregation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1669daffa061d87308891ba5941d7fa7
https://doi.org/10.1016/j.scriptamat.2013.02.002
https://doi.org/10.1016/j.scriptamat.2013.02.002
Publikováno v:
Critical Reviews in Solid State and Materials Sciences. 37:181-214
Ni-based superalloys play an important role in aircraft engine propulsion. However, many experiments demonstrated that these alloys as well as Ni always show ductility loss at intermediate temperature, which constrains further development. A comparis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a88e4874e2816254ed5b350fb16124b
https://doi.org/10.1080/10408436.2011.613492
https://doi.org/10.1080/10408436.2011.613492
Autor:
Dieter Isheim, N. P. Lazarev, Nelia Wanderka, Guido Schmitz, John Banhart, Syo Matsumura, Ralf Schlesiger, Takashi Yamamoto, Melanie Timpel
Publikováno v:
Acta Materialia. 60:3920-3928
Small amounts of strontium can transform the morphology of the eutectic silicon phase present in Al–Si casting alloys from coarse plate-like to fine fibrous networks. In order to understand this industrially important but hitherto insufficiently un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baaa253bfa547b3ea618e5ad95ecafde
https://doi.org/10.1016/j.actamat.2012.03.031
https://doi.org/10.1016/j.actamat.2012.03.031
Autor:
M. Kasprzak, Zoltán Balogh, Gerd Hendrik Greiwe, Mohammed Reda Chellali, Ralf Schlesiger, Christian Oberdorfer, Patrick Stender, Guido Schmitz, Dietmar Baither
Publikováno v:
Defect and Diffusion Forum. :3-10
Nanoscale systems show a wide variety of physical properties that cannot be observed in the bulk. Using atom probe tomography, it is possible to study nanostructured materials with almost atomic resolution in all three dimensions. In this article, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68433b5c313f2a72993f9aac123dfcd5
https://doi.org/10.4028/www.scientific.net/ddf.323-325.3
https://doi.org/10.4028/www.scientific.net/ddf.323-325.3
Publikováno v:
Materials & Design. 34:155-158
Ni and Ni-based superalloys generally exhibit intermediate temperature embrittlement (ITE), which is usually interpreted by the evolution of intergranular precipitates. In this paper, the relationship between ITE and intergranular precipitates was in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca57e07979163157956dde2cca0ca155
https://doi.org/10.1016/j.matdes.2011.07.050
https://doi.org/10.1016/j.matdes.2011.07.050
Publikováno v:
JOM. 62:58-63
In recent years, atom probe tomography has advanced to an outstanding tool of analyzing interfacial chemistry in nanostructured materials. In this article, quantitative measurements of the natural width of multilayer interfaces and of segregation at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dce8ff094239762f4236c5f32d7fcab
https://doi.org/10.1007/s11837-010-0182-8
https://doi.org/10.1007/s11837-010-0182-8
Autor:
Ralf Schlesiger, Guido Schmitz
Publikováno v:
Ultramicroscopy. 109:497-501
In order to improve the performance and applicability of atom probe tomography, the application of microelectrodes has been suggested and is realized in modern commercial instruments. In contrast to the original proposition by Nishikawa, in practical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64c909402dd1af13d7ab60391ea0047a
https://doi.org/10.1016/j.ultramic.2008.11.008
https://doi.org/10.1016/j.ultramic.2008.11.008