Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Malte Lenz"'
Autor:
Andreas Bezold, Jan Vollhüter, Nicolas Karpstein, Malte Lenz, Aparna P. A. Subramanyam, Christopher H. Zenk, Thomas Hammerschmidt, Erdmann Spiecker, Mathias Göken, Steffen Neumeier
Publikováno v:
Communications Materials, Vol 5, Iss 1, Pp 1-11 (2024)
Abstract Pushing the maximum service temperature of aircraft engines and industrial gas turbines is the major pathway to improve their energy efficiency and reduce CO2 emissions. This maximum is mostly limited by the temperature capability of key-com
Externí odkaz:
https://doaj.org/article/9f99d679a1f649529d52a01297d52549
Publikováno v:
Acta Materialia. 191:270-279
In this work, we present the first observation and high-resolution analysis of Frank partial dislocations formed upon high temperature creep inside the L12 structure of a superalloy. The dislocations and associated planar faults are observed in a mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::280dedfa5f692df838dea06ef6c8ffd9
https://doi.org/10.1016/j.actamat.2020.03.056
https://doi.org/10.1016/j.actamat.2020.03.056
Autor:
Nicolas Karpstein, Malte Lenz, Andreas Bezold, Mingjian Wu, Steffen Neumeier, Erdmann Spiecker
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e6ff404fb68296ad032030df734f3b5
https://doi.org/10.2139/ssrn.4284383
https://doi.org/10.2139/ssrn.4284383
Autor:
Erdmann Spiecker, Nicklas Volz, P. Wollgramm, Julian M. Müller, Mathias Göken, Malte Lenz, Yolita M. Eggeler, Gunther Eggeler, Steffen Neumeier, Christopher H. Zenk
Publikováno v:
Acta Materialia. 166:597-610
The creep behavior of a multinary single crystal Co-base superalloy has been compared for uniaxial tension and compression of 400 MPa applied along [001] at 850 °C. Creep under tensile stress proceeds two times faster than creep under compression. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::101032ebca2c4cbcd46937330fa9a3a9
https://doi.org/10.1016/j.actamat.2018.12.053
https://doi.org/10.1016/j.actamat.2018.12.053
Autor:
Harald Unterweger, Sarah Cunningham, Stefan Lyer, Katrin Hurle, Holger Hackstein, Christian Bogdan, Nicola Taccardi, Christoph Alexiou, Richard Strauß, Lars Fester, Regine Brox, Bernhard Friedrich, Erdmann Spiecker, Christina Janko, Aldo R. Boccaccini, Silvio Dutz, Floris J. Bikker, Heidi Sebald, Rainer Tietze, Malte Lenz
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::717debf11f4a1b0faa6baa91bee9f2fb
https://doi.org/10.2139/ssrn.3959602
https://doi.org/10.2139/ssrn.3959602
Autor:
Dierk Raabe, Erdmann Spiecker, Junyang He, Steffen Neumeier, Mingjian Wu, Malte Lenz, Surendra Kumar Makineni, Baptiste Gault
Publikováno v:
Superalloys 2020 ISBN: 9783030518332
We report atomic structures and chemical compositions of defects associated to planar faults in a creep deformed Co-base superalloy and discuss their formation and contribution to plastic deformation. The multinary single crystalline Co-base superall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c614d9671f99be596821ddc6c0b069a9
https://doi.org/10.1007/978-3-030-51834-9_90
https://doi.org/10.1007/978-3-030-51834-9_90
Autor:
Dierk Raabe, Erdmann Spiecker, Malte Lenz, Steffen Neumeier, Surendra Kumar Makineni, Baptiste Gault
Publikováno v:
Scripta Materialia. 157:62-66
We report on the full three-dimensional compositional partitioning among the features of a planar imperfection comprising a superlattice intrinsic stacking fault (SISF) with its leading and trailing partials, as well as the antiphase boundary (APB) i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7800646ee8e5fbfc95902bcc5f0763cf
https://doi.org/10.1016/j.scriptamat.2018.07.042
https://doi.org/10.1016/j.scriptamat.2018.07.042
Autor:
Stefan Zaefferer, Dierk Raabe, Ankit Kumar, Baptiste Gault, Thorsten Meiners, Surendra Kumar Makineni, Erdmann Spiecker, Malte Lenz, Christopher H. Zenk, Gunther Eggeler, Steffen Neumeier, Paraskevas Kontis
Publikováno v:
Acta Materialia. 155:362-371
We propose here a deformation-induced diffusive phase transformation mechanism occurring during shearing of γ′ ordered phase in a γ/γ′ single crystalline CoNi-based superalloy. Shearing involved the creation and motion of a high density of pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14bcfe8b995d8394539977e7a7fa3f8e
https://doi.org/10.1016/j.actamat.2018.05.074
https://doi.org/10.1016/j.actamat.2018.05.074
Autor:
T. Kalfhaus, Dierk Raabe, Nicklas Volz, Sannakaisa Virtanen, Jürgen Schreuer, Steffen Neumeier, Martin Weiser, Erdmann Spiecker, R. Cherukuri, Christopher H. Zenk, C. Betzing, Robert Vaßen, Surendra Kumar Makineni, Malte Lenz, Suzana G. Fries, Baptiste Gault, Matthias Göken
Publikováno v:
Metallurgical and Materials Transactions A. 49:4099-4109
A set of advanced single crystalline γ′ strengthened Co-base superalloys with at least nine alloying elements (Co, Ni, Al, W, Ti, Ta, Cr, Si, Hf, Re) has been developed and investigated. The objective was to generate multinary Co-base superalloys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::076b7e1433acd9239f945746a7ec984a
https://doi.org/10.1007/s11661-018-4705-1
https://doi.org/10.1007/s11661-018-4705-1
Autor:
Dierk Raabe, Ankit Kumar, Erdmann Spiecker, Michael Herbig, Baptiste Gault, Peter Felfer, Zhuangming Li, Surendra Kumar Makineni, Steffen Neumeier, Malte Lenz, Paraskevas Kontis
Publikováno v:
JOM-Journal of the Minerals Metals & Materials Society
Nanoscale solute segregation to or near lattice defects is a coupled diffusion and trapping phenomenon that occurs in superalloys at high temperatures during service. Understanding the mechanisms underpinning this crucial process will open pathways t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b41f8d50f06e66a8bbcc1cae07772764
https://doi.org/10.1007/s11837-018-2802-7
https://doi.org/10.1007/s11837-018-2802-7