@misc{BeckerBogonGersetal., author = {Becker, Joachim and Bogon, Peter and Gers, Horst and Kiefer, Armin and Leyens, Christoph and Newiak, Fridjof and Roll, Karl and Straube, Oliver and Viehweger, Bernd}, title = {Magnesium-Knetlegierungen f{\"u}r den Automobilbau}, doi = {10.1007/BF03221747}, abstract = {Wenngleich der Verwendung von Mg-Knetlegierungen im Automobilbau ein großes Potenzial zugesprochen wird, ist deren Einsatz bislang von geringer Bedeutung geblieben. Im Rahmen des vom BMBF-gef{\"o}rderten Verbundforschungsvorhabens "MIA-Magnesium im Automobilbau" werden daher in Zusammenarbeit der Firmen DaimlerChrysler AG, ThyssenKrupp Umformtechnik GmbH, Otto Fuchs KG, Honsel GmbH \& Co. KG, GP Innovation GmbH, OSK Kiefer GmbH sowie der BTU in Cottbus die Grundlagen f{\"u}r die prototypische Fertigung von Bauteilen aus den Mg-Knetlegierungen des Typf AZ 31 und AZ 80 erarbeitet.}, language = {de} } @inproceedings{ZhangKutzscheRosenbergetal., author = {Zhang, J. and Kutzsche, Anja and Rosenberg, K. and Viehweger, Bernd and Leyens, Christoph}, title = {A novel canning technology for forging of gamma-TiAl alloys}, abstract = {A novel canning technology to forge gamma-TiAl alloys was developed at the BTU Cottbus. A TiAl specimen is encapsulated with multilayer stainless steel foil and glass. The steel foil layers prevent the heat loss through radiation and the glass layer reduces the temperature decrease through conduction. First, the effect of steel foil on the cooling rate was investigated. Cooling curves were recorded for TiAl specimens without steel foil layer, with 1, 2, 3 and 4 layers of steel foil, as well as with 3 coated steel foil layers, respectively. While the unprotected specimen cooled from 1200 °C to 1100 °C within 12 s, the specimen with 3 coated steel foil layers needed 52 s for the same temperature decrease. The efficiency of the glass layer was examined with forging of steel specimens. The cooling rate during forging of the specimen with a glass layer is only half of that without a glass layer. Based on the results, Ti-45Al-0.5Mo-0.5Cu-0.2Si specimens, canned with steel foil and glass, were successfully forged at strain rates of 0.1 s-1 and 0.04 s-1 with warm dies which were heated to 500 °C. Visual and metallographic examinations revealed no cracks, pores or micropores. The microstructures are fine-equiaxed grains.}, language = {en} } @inproceedings{KutzscheZhangAppeletal., author = {Kutzsche, Anja and Zhang, J. and Appel, Fritz and Leyens, Christoph and Viehweger, Bernd}, title = {Forging of Beta-Phase containing gamma-TiAl alloys}, language = {en} } @misc{ZhangFloresRenteriaWildetal., author = {Zhang, Ping and Flores Renteria, Arturo and Wild, E. and Reimers, W. and Leyens, Christoph}, title = {Oxidation-resistant Ti-90Al coatings with lotus effect surfacemorphology deposited on a gamma-TiAl alloy}, series = {Scripta Materialia}, volume = {61}, journal = {Scripta Materialia}, number = {12}, issn = {1359-6462}, pages = {1156 -- 1159}, abstract = {Ti-90Al (in at.\%) coatings were deposited on Ti-45Al-8Nb alloy at two different temperatures, 300 and 540 °C. The coatingsputtered at 300 °C consisted of Al and TiAl3 with columnar grain structure. The morphology, chemical composition and microstructureof the coating sputtered at540 °Cwere strongly dependent on the substrate microstructure. The two coating variantsformed oxidation-resistant Al2O3 scales during oxidation. The special morphological features of the coatings make them interestingfor geometrically structuring the surfaces to provoke the lotus effect.}, language = {en} } @misc{ZhangDingLindemannetal., author = {Zhang, Ping and Ding, W. J. and Lindemann, Janny and Leyens, Christoph}, title = {Mechanical properties of the hot-rolled Mg-12Gd-3Y magnesium alloy}, abstract = {Tensile and high cycle fatigue (HCF) properties of the hot-rolled Mg-12Gd-3Y (wt.\%) magnesium alloyhave been investigated. The magnesium alloy exhibits a fatigue strength of about 150 MPa, which ismuch higher than that of the commercial Mg-8Al-Zn alloy AZ80. Aging heat-treatment (T5) improvedthe fatigue life of the Mg-12Gd-3Y alloy. Fatigue cracks nucleated at the intense slip bands in theas-rolled alloy. After T5 treatment, however, the fatigue crack nucleation site shifted to the phase boundariesbetween MgGdY particles and Mg matrix. T5 heat-treatment retarded the crack initiation and thusimproved the fatigue life of the Mg-12Gd-3Y alloy.}, language = {de} } @inproceedings{LindemannGlavatskikhLeyensetal., author = {Lindemann, Janny and Glavatskikh, Maria and Leyens, Christoph and Roth-Fagaraseanu, Dan}, title = {Effect of Small Boron and Carbon Additions on the Mechanical Properties of a Novel High Niobium-Containing Gamma Titanium Aluminide Alloy}, series = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {257 -- 264}, language = {en} } @inproceedings{GlavatskikhLindemannLeyensetal., author = {Glavatskikh, Maria and Lindemann, Janny and Leyens, Christoph and Oehring, Michael and Appel, Fritz}, title = {Surface Strengthening for Enhanced Fatigue Performance of Gamma Titanium Aluminides}, series = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {111 -- 118}, language = {en} } @misc{GarkasLeyensFloresRenteria, author = {Garkas, Wagdi and Leyens, Christoph and Flores Renteria, Arturo}, title = {Synthesis and characterization of Ti2AlC and Ti2AlN MAX phase coatings manufactured in an industrial-size coater}, language = {en} } @misc{WangFloresRenteriaSchroeteretal., author = {Wang, Qimin and Flores Renteria, Arturo and Schroeter, Olaf and Mykhaylonka, Ruslan and Leyens, Christoph and Garkas, Wagdi and Baben, Moritz to}, title = {Fabrication and oxidation behavior of Cr2AlC coating on Ti6242 alloy}, language = {en} } @misc{WangGarkasFloresRenteriaetal., author = {Wang, Qimin and Garkas, Wagdi and Flores Renteria, Arturo and Leyens, Christoph}, title = {Oxidation Behaviour of Ti2AlN Films Composed Mainly of Nanolaminated MAX Phase}, series = {Journal of nanoscience and nanotechnology}, volume = {11}, journal = {Journal of nanoscience and nanotechnology}, number = {10}, issn = {1533-4899}, pages = {8959 -- 8966}, language = {en} } @article{ZhangLindemannLeyens, author = {Zhang, Ping and Lindemann, Janny and Leyens, Christoph}, title = {Influence of texture and microstructure on mechanical properties of high-strength wrought magnesium alloy AZ80}, language = {en} } @inproceedings{ZhangLindemannLeyens, author = {Zhang, Ping and Lindemann, Janny and Leyens, Christoph}, title = {Surface rolling on the high-strength wrought magnesium alloy AZ80}, language = {en} } @article{EbachStahlFroehlichBraunetal., author = {Ebach-Stahl, Andrea and Fr{\"o}hlich, Maik and Braun, Reinhold and Leyens, Christoph}, title = {Improvement of the High-Temperature Oxidation Resistance of gamma-TiAl by Selectively Pre-treated Si-based Coatings}, language = {en} } @article{BraunFroehlichEbachStahletal., author = {Braun, Reinhold and Fr{\"o}hlich, Maik and Ebach-Stahl, Andrea and Leyens, Christoph}, title = {Investigation on the oxidation behaviour of gamma titanium aluminides coated with thermal barrier coatings}, language = {en} } @misc{BraunFroehlichLeyensetal., author = {Braun, Reinhold and Fr{\"o}hlich, Maik and Leyens, Christoph and Renusch, Daniel}, title = {Oxidation Behaviour of TBC Systems on gamma-TiAl Based Alloy Ti-45Al-8Nb}, language = {en} } @misc{EbachStahlFroehlichLeyens, author = {Ebach-Stahl, Andrea and Fr{\"o}hlich, Maik and Leyens, Christoph}, title = {Influence of different annealing processes under various atmospheres on the oxidation behavior of gamma-TiAl}, series = {Materials at high temperatures}, volume = {26}, journal = {Materials at high temperatures}, number = {1}, issn = {1878-6413}, pages = {91 -- 98}, language = {en} } @inproceedings{ZhangLindemannKieferetal., author = {Zhang, Ping and Lindemann, Janny and Kiefer, A. and Leyens, Christoph}, title = {Mechanical surface treatments on the high-strength wrought magnesium alloy AZ80}, series = {Proceedings of the 9th International Conference on Shot Peening, Paris, 6 - 9 September 2005}, booktitle = {Proceedings of the 9th International Conference on Shot Peening, Paris, 6 - 9 September 2005}, isbn = {978-2-907669-37-5}, pages = {308 -- 313}, language = {en} } @inproceedings{BraunMuessenerMoseretal., author = {Braun, Reinhold and M{\"u}ßener, David and Moser, Martin and Rovere, Florian and Mayrhofer, Paul H. and Leyens, Christoph}, title = {Oxidation behaviour of the gamma-TiAl based alloy Ti-45Al-8Nb coated with TiAlYN and CrAlYN thin films}, series = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {289 -- 296}, language = {en} } @inproceedings{RossRainforthZhouetal., author = {Ross, Ian and Rainforth, Mark and Zhou, Zhaoxia and Walker, John and Reinhard, Christina and Ehiasarian, Arutiun and Hovsepian, Papken and Braun, Reinhold and Leyens, Christoph}, title = {Oxidation characteristics of gamma-TiAl-8Nb coated with a CrAlYN/CrN nanoscale multilayer coating}, series = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, proceedings of the Structural Aluminides for Elevated Temperatures Symposium, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {315 -- 322}, language = {en} } @inproceedings{FroehlichBraunLeyens, author = {Fr{\"o}hlich, Maik and Braun, Reinhold and Leyens, Christoph}, title = {Ti-Al-Cr-X coatings for high temperature oxidation protection of gamma titanium aluminides}, series = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {333 -- 340}, language = {en} } @inproceedings{BraunMuessenerLeyensetal., author = {Braun, Reinhold and M{\"u}ßener, David and Leyens, Christoph and Hovsepian, Papken and Reinhard, Christina and Ehiasarian, Arutiun}, title = {Environmental protection of gamma-TiAl alloys coated with CrAlYN/CrN nanoscale multilayer coatings and EB-PVD thermal barrier coatings}, series = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {341 -- 348}, language = {en} } @misc{ZhangLindemannLeyens, author = {Zhang, Ping and Lindemann, Janny and Leyens, Christoph}, title = {Shot peening on the high-strength wrought magnesium alloy AZ80 - Effect of peening media}, language = {en} } @misc{ZhangLindemannLeyens, author = {Zhang, Ping and Lindemann, Janny and Leyens, Christoph}, title = {Influence of shot peening on notched fatigue strength of the high-strength wrought magnesium alloy AZ80}, series = {Journal of alloys and compounds}, volume = {497}, journal = {Journal of alloys and compounds}, number = {1-2}, issn = {0925-8388}, pages = {380 -- 385}, language = {en} } @inproceedings{EbachStahlFroehlichLeyens, author = {Ebach-Stahl, Andrea and Fr{\"o}hlich, Maik and Leyens, Christoph}, title = {Influence of different annealing processes on the oxidation behaviour of gamma-TiAl}, language = {en} } @inproceedings{BraunBraueFroehlichetal., author = {Braun, Reinhold and Braue, Wolfgang and Fr{\"o}hlich, Maik and Leyens, Christoph and Hovsepian, Papken}, title = {Thermally grown oxide scales on gamma-TiAl coated with thermal protection systems}, language = {en} } @inproceedings{BraunLeyensFroehlich, author = {Braun, Reinhold and Leyens, Christoph and Fr{\"o}hlich, Maik}, title = {Performance of thermal barrier coatings on gamma-TiAl}, language = {en} } @inproceedings{BrandlLeyensPalmetal., author = {Brandl, Erhard and Leyens, Christoph and Palm, Frank and Schoberth, Achim and Onteniente, Perrine}, title = {Wire instead of powder? - Properties of additive manufactured Ti-6Al-4V for aerospace applications}, series = {High-tech solutions and concepts, proceedings, Euro-uRapid 2008, International User's Conference on Rapid Prototyping \& Rapid Tooling \& Rapid Manufacturing, Berlin, Germany, September 23 - 24, 2008,}, booktitle = {High-tech solutions and concepts, proceedings, Euro-uRapid 2008, International User's Conference on Rapid Prototyping \& Rapid Tooling \& Rapid Manufacturing, Berlin, Germany, September 23 - 24, 2008,}, editor = {Meyer, Rudolf}, isbn = {978-3-8167-7784-7}, pages = {155 -- 166}, language = {en} } @incollection{LindemannGlavatskikhLeyensetal., author = {Lindemann, Janny and Glavatskikh, Maria and Leyens, Christoph and Oehring, Michael and Appel, Fritz}, title = {Influence of Mechanical Surface Treatments on the High Cycle Fatigue Performance of Gamma Titanium Aluminides}, language = {en} } @article{LeyensBraunFroehlichetal., author = {Leyens, Christoph and Braun, Reinhold and Fr{\"o}hlich, Maik and Hovsepian, Papken}, title = {Recent Progress in the Coating Protection of Gamma Titanium-Aluminides}, language = {en} } @article{FroehlichLeyensBraun, author = {Fr{\"o}hlich, Maik and Leyens, Christoph and Braun, Reinhold}, title = {Oxidation resistant coatings in combination with thermal barrier coatings on gamma-TiAl alloys for high temperature applications}, language = {en} } @book{LeyensPeters, author = {Leyens, Christoph and Peters, Manfred}, title = {Titanium and Titanium Alloys}, publisher = {Beijing : Chemical Industry Press}, isbn = {7-5025-6408-X}, language = {mul} } @article{PetersLeyens, author = {Peters, P. W. M. and Leyens, Christoph}, title = {Langfaserverst{\"a}rkte Titanlegierungen}, series = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung und Ingenieur-Werkstoffe}, volume = {56}, journal = {Konstruktion : Zeitschrift f{\"u}r Produktentwicklung und Ingenieur-Werkstoffe}, number = {5}, issn = {0373-3300}, pages = {IW6-8}, language = {de} } @article{BrendelLeyensWolterdorfetal., author = {Brendel, Annegret and Leyens, Christoph and Wolterdorf, J{\"o}rg and Pippel, Eckhard and Bolt, Harald H. and Popescu, C.}, title = {SiC-fibre reinforced copper as heat sink material for fusion applications}, doi = {10.1016/j.jnucmat.2004.04.304}, language = {en} } @misc{ZhangLeyens, author = {Zhang, Jiulai and Leyens, Christoph}, title = {Process for manufacturing foils, sheets and shaped parts from an alloy with titanium and aluminum as its main elements}, language = {en} } @inproceedings{ZhangBeckerAppeletal., author = {Zhang, Jiulai and Becker, M. and Appel, C. and Leyens, Christoph and Viehweger, Bernd}, title = {Forging of ß-phase containing ?-TiAl alloys}, series = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, booktitle = {Structural aluminides for elevated temperatures, held during TMS 2008 annual meeting \& exhibition, New Orleans, Louisiana, USA, March 9 - 13, 2008}, editor = {Kim, Young-Won}, publisher = {TMS}, address = {Warrendale, Pa.}, isbn = {978-0-87339-720-9}, pages = {265 -- 272}, language = {en} } @misc{BrandlPalmMichailovetal., author = {Brandl, Erhard and Palm, Frank and Michailov, Vesselin and Viehweger, Bernd and Leyens, Christoph}, title = {Mechanical properties of additive manufactured titanium (Ti-6Al-4V) blocks deposited by a solid-state laser and wire}, series = {Materials and Design}, volume = {32}, journal = {Materials and Design}, number = {10}, issn = {0261-3069}, pages = {4665 -- 4675}, language = {en} } @misc{BrandlViehwegerMichailovetal., author = {Brandl, Erhard and Viehweger, Bernd and Michailov, Vesselin and Leyens, Christoph}, title = {Deposition of Ti-6Al-4V using laser and wire, part I: Microstructural properties of single beads}, language = {en} } @misc{BandlMichailovViehwegeretal., author = {Bandl, Erhard and Michailov, Vesselin and Viehweger, Bernd and Leyens, Christoph}, title = {Deposition of Ti-6Al-4V using laser and wire, part II: Hardness and dimensions of single beads}, series = {Surface \& Coatings Technology}, volume = {206}, journal = {Surface \& Coatings Technology}, number = {6}, issn = {0257-8972}, pages = {1130 -- 1141}, language = {en} } @inproceedings{Leyens, author = {Leyens, Christoph}, title = {Effect of nitride coatings on the wear and fatigue behavior of titanium alloy Ti-6Al-4V}, series = {Proceedings of the 12th World Conference on Titanium, June 19 - 24, 2011, Beijing China}, booktitle = {Proceedings of the 12th World Conference on Titanium, June 19 - 24, 2011, Beijing China}, publisher = {Science Press}, address = {Beijing}, isbn = {978-7-03-033899-0}, language = {en} } @misc{WangGarkasFloresRenteriaetal., author = {Wang, Q. M. and Garkas, Wagdi and Flores Renteria, Arturo and Leyens, Christoph and Lee, H. W. and Kim, K. H.}, title = {Oxidation behaviour of Ti-Al-C films composed mainly of a Ti2AlC phase}, series = {Corrosion Science}, volume = {53}, journal = {Corrosion Science}, number = {9}, issn = {0010-938X}, pages = {2948 -- 2955}, language = {en} } @misc{WangGarkasFloresRenteriaetal., author = {Wang, Qimin and Garkas, Wagdi and Flores Renteria, Arturo and Leyens, Christoph and Sun, Chao and Kim, Kwangho}, title = {Oxidation behaviour of a Ti2AlN MAX-phase coating}, series = {IOP conference series : Materials Science and Engineering}, journal = {IOP conference series : Materials Science and Engineering}, number = {18}, issn = {1757-8981}, pages = {082025 (4 S.)}, language = {en} } @misc{SizovaSviridovBambachetal., author = {Sizova, Irina and Sviridov, Alexander and Bambach, Markus and Eisentraut, Mark and Hemes, Susanne and Hecht, Ulrike and Marquardt, Axel and Leyens, Christoph}, title = {A study on hot-working as alternative post-processing method for titanium aluminides built by laser powder bed fusion and electron beam melting}, series = {Journal of Materials Processing Technology}, volume = {291}, journal = {Journal of Materials Processing Technology}, issn = {0924-0136}, doi = {10.1016/j.jmatprotec.2020.117024}, pages = {14}, language = {en} }