@misc{PyczakBauerGoekenetal., author = {Pyczak, Florian and Bauer, A. and G{\"o}ken, Mathias and Neumeier, Steffen and Lorenz, U. and Oehring, Michael and Schell, N. and Schreyer, Andreas and Stark, Andreas and Szymanzik, F.}, title = {Plastic Deformation Mechanisms in a Crept L12 hardened Co-Base Superalloy}, series = {Materials Science and Engineering A}, journal = {Materials Science and Engineering A}, number = {571}, issn = {1873-4936}, pages = {13 -- 18}, language = {en} } @inproceedings{GabrischLorenzOehringetal., author = {Gabrisch, Heike and Lorenz, Uwe and Oehring, Michael and Paul, Jonathan and Pyczak, Florian and Rackel, Marcus W. and Schimansky, Frank-Peter and Stark, Andreas}, title = {TiAlNb-alloy with a modulated B19 containing constituent produced by powder metallurgy}, series = {Intermetallic-based alloys - science, technology and applications, symposium held November 25-30, Boston, Massachusetts, U.S.A}, booktitle = {Intermetallic-based alloys - science, technology and applications, symposium held November 25-30, Boston, Massachusetts, U.S.A}, publisher = {Cambridge Univ. Press}, address = {Cambridge}, doi = {10.1557/opl.2012.1575}, pages = {35 -- 40}, language = {en} } @misc{EbelFerriLimbergetal., author = {Ebel, Thomas and Ferri, Orley Milagres and Limberg, Wolfgang and Oehring, Michael and Pyczak, Florian and Schimansky, Frank-Peter}, title = {Metal injection moulding of titanium and titanium-aluminides}, series = {Key Engineering Materials}, journal = {Key Engineering Materials}, number = {520}, issn = {1662-9795}, pages = {153 -- 160}, language = {en} } @misc{StarkOehringPyczaketal., author = {Stark, Andreas and Oehring, Michael and Pyczak, Florian and Lippmann, Thomas and Lottermoser, Lars and Schreyer, Andreas}, title = {The transformation mechanism of β phase to ω-related phases in Nb-rich γ-TiAl alloys studied by in situ high-energy X-ray diffraction}, series = {Materials Science Forum}, journal = {Materials Science Forum}, number = {772}, issn = {1662-9752}, pages = {85 -- 89}, language = {en} } @misc{StaronBeckmannLippmannetal., author = {Staron, Peter and Beckmann, Felix and Lippmann, Thomas and Stark, Andreas and Oehring, Michael and Pyczak, Florian and Salgado, Mario and Hort, Norbert and Eckerlebe, Horst and Kainer, Karl Ulrich and M{\"u}ller, Martin and Schreyer, Andreas}, title = {In situ studies of light metals with synchrotron radiation and neutrons}, series = {Materials Science Forum}, journal = {Materials Science Forum}, number = {690}, issn = {1662-9752}, pages = {192 -- 197}, language = {en} } @inproceedings{StarkOehringPyczak, author = {Stark, Andreas and Oehring, Michael and Pyczak, Florian}, title = {Influence of Quenching Rates on the Transformation of Ternary Phases in Nb-rich γ-TiAl Alloys}, series = {Intermetallic-based alloys for structural and functional applications, symposium held November 29 - December 3, Boston, Massachusetts, U.S.A}, booktitle = {Intermetallic-based alloys for structural and functional applications, symposium held November 29 - December 3, Boston, Massachusetts, U.S.A}, editor = {Palm, Martin and Bewlay, Bernard P. and Kumar, K. Sharvan and Yoshimi, Kyosuke}, publisher = {Cambridge Univ. Press}, address = {Cambridge}, doi = {doi:10.1557/opl.2011.30}, pages = {107 -- 112}, language = {en} } @misc{PyczakAppelLimbergetal., author = {Pyczak, Florian and Appel, Fritz and Limberg, Wolfgang and Lorenz, Uwe and Oehring, Michael and Paul, Jonathan and Schimansky, Frank-Peter}, title = {Novel Processing Techniques for gamma-TiAl Alloys}, series = {Materials Science Forum}, journal = {Materials Science Forum}, number = {690}, issn = {1662-9752}, pages = {145 -- 148}, language = {en} } @misc{StarkOehringPyczaketal., author = {Stark, Andreas and Oehring, Michael and Pyczak, Florian and Schreyer, Andreas}, title = {In Situ Observation of Various Phase Transformation Paths in Nb-Rich TiAl Alloys during Quenching with Different Rates}, series = {Advanced Engineering Materials}, volume = {18}, journal = {Advanced Engineering Materials}, number = {8}, issn = {1527-2648}, pages = {700 -- 704}, language = {en} } @misc{BolzOehringLindemannetal., author = {Bolz, Sebastian and Oehring, Michael and Lindemann, Janny and Pyczak, Florian and Paul, Jonathan and Stark, Andreas and Lippmann, Thomas and Roth-Fagaraseanu, Dan and Schreyer, Andreas and Weiß, Sabine and Schr{\"u}fer, Susanne}, title = {Microstructure and mechanical properties of a forged beta-solidifying gamma TiAl alloy in different heat treatment conditions}, series = {Intermetallics}, volume = {2015}, journal = {Intermetallics}, number = {58}, pages = {71 -- 83}, language = {en} } @misc{PyczakBauerGoekenetal., author = {Pyczak, Florian and Bauer, Alexander and G{\"o}ken, Mathias and Lorenz, Uwe and Neumeier, Steffen and Oehring, Michael and Paul, Jonathan and Schell, Norbert and Schreyer, Andreas and Symanzik, Felix}, title = {The effect of tungsten content on the properties of L12-hardened Co-Al-W alloys}, series = {Journal of Alloys and Compounds}, journal = {Journal of Alloys and Compounds}, number = {632}, issn = {0925-8388}, pages = {110 -- 115}, language = {en} } @misc{OehringLindemannPyczaketal., author = {Oehring, Michael and Lindemann, Janny and Pyczak, Florian and Paul, Jonathan and Stark, Andreas and Lippmann, Thomas and Schr{\"u}fer, Susanne and Roth-Fagaraseanu, Dan and Schreyer, Andreas and Weiß, Sabine}, title = {Microstructure and mechanical properties of a forged β-solidifying γ TiAl alloy in different heat treatment conditions}, series = {Intermetallics}, volume = {2015}, journal = {Intermetallics}, number = {58}, issn = {0966-9795}, doi = {10.1016/j.intermet.2014.11.008}, pages = {71 -- 83}, abstract = {In the cast condition g titanium aluminide alloys that solidify completely through the b phase are characterized by fine and homogeneous microstructures, weak textures and low segregation. For these reasons such alloys have a relatively good workability and can be closed-die forged without preceding ingot breakdown even if the alloys contain no large fractions of the b phase at the working temperature. The present work was devoted to a combined study of the constitution and microstructural morphologies that develop in various two-step heat treatments of a single-step forged b solidifying alloy. The study included high-energy X-ray diffraction for in situ investigations of the constitution at the heat treatment temperature. It was observed that the phase ransformations are quite sluggish in the material which results in fine microstructures and some conditions that significantly deviate from thermodynamic equilibrium. Further, tensile and creep testing was carried out on the different material conditions in order to identify the range in which the properties can be varied. It is found that this easily forgeable material exhibits comparable strength, ductility and creep strength as more conventional peritectically solidifying alloys.}, language = {en} } @misc{SoyamaOehringLimbergetal., author = {Soyama, Juliano and Oehring, Michael and Limberg, Wolfgang and Ebel, Thomas and Kainer, Karl Ulrich and Pyczak, Florian}, title = {The effect of zirconium addition on sintering behaviour, microstructure and creep resistance of the powder metallurgy processed alloy Ti-45Al-5Nb-0.2B-0.2C}, series = {Materials and Design}, volume = {84}, journal = {Materials and Design}, issn = {0261-3069}, pages = {87 -- 94}, language = {en} } @misc{SoyamaOehringLimbergetal., author = {Soyama, Juliano and Oehring, Michael and Limberg, Wolfgang and Ebel, Thomas and Kainer, Karl Ulrich and Pyczak, Florian}, title = {Sintering behaviour of Ti-45Al-5Nb-0.2B-0.2C alloy modifications by additions of elemental titanium and aluminium}, series = {Powder Metallurgy}, volume = {58}, journal = {Powder Metallurgy}, number = {5}, issn = {1743-2901}, pages = {369 -- 375}, language = {en} } @misc{StarkRackelTchouahaTankouaetal., author = {Stark, Andreas and Rackel, Marcus W. and Tchouaha Tankoua, Aristide and Oehring, Michael and Schell, Norbert and Lottermoser, Lars and Schreyer, Andreas and Pyczak, Florian}, title = {In situ High-Energy X-Ray Diffraction during Hot-Forming of a Multiphase TiAl Alloy}, series = {Metals}, volume = {5}, journal = {Metals}, number = {4}, issn = {2075-4701}, pages = {2252 -- 2265}, language = {en} } @misc{LiPyczakOehringetal., author = {Li, Yuzhi and Pyczak, Florian and Oehring, Michael and Wang, Li and Paul, Jonathan and Lorenz, Uwe and Yao, Zekun}, title = {Thermal Stability of gamma' phase in long-term aged Co-Al-W alloys}, series = {Journal of Alloys and Compounds}, volume = {729}, journal = {Journal of Alloys and Compounds}, issn = {0925-8388}, pages = {266 -- 276}, language = {en} } @misc{LiPyczakPauletal., author = {Li, Yuzhi and Pyczak, Florian and Paul, Jonathan and Oehring, Michael and Lorenz, Uwe and Yao, Zekun}, title = {Microstructure evolution in L12 hardened Co-base superalloys during creep}, series = {Journal of Materials Research}, volume = {32}, journal = {Journal of Materials Research}, number = {24}, issn = {2044-5326}, pages = {4522 -- 4530}, language = {en} } @misc{PaulOehringAppeletal., author = {Paul, Jonathan and Oehring, Michael and Appel, Fritz and Pyczak, Florian}, title = {Depth resolved near-surface residual stresses in γ-based TiAl before and after high-temperature exposure}, series = {Intermetallics}, volume = {84}, journal = {Intermetallics}, issn = {0966-9795}, pages = {103 -- 111}, language = {en} }