TY - GEN A1 - Pyczak, Florian A1 - Bauer, A. A1 - Göken, Mathias A1 - Neumeier, Steffen A1 - Lorenz, U. A1 - Oehring, Michael A1 - Schell, N. A1 - Schreyer, Andreas A1 - Stark, Andreas A1 - Szymanzik, F. T1 - Plastic Deformation Mechanisms in a Crept L12 hardened Co-Base Superalloy T2 - Materials Science and Engineering A Y1 - 2013 SN - 1873-4936 IS - 571 SP - 13 EP - 18 ER - TY - CHAP A1 - Gabrisch, Heike A1 - Lorenz, Uwe A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Pyczak, Florian A1 - Rackel, Marcus W. A1 - Schimansky, Frank-Peter A1 - Stark, Andreas T1 - TiAlNb-alloy with a modulated B19 containing constituent produced by powder metallurgy T2 - Intermetallic-based alloys - science, technology and applications, symposium held November 25-30, Boston, Massachusetts, U.S.A Y1 - 2013 U6 - https://doi.org/10.1557/opl.2012.1575 SP - 35 EP - 40 PB - Cambridge Univ. Press CY - Cambridge ER - TY - GEN A1 - Ebel, Thomas A1 - Ferri, Orley Milagres A1 - Limberg, Wolfgang A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Schimansky, Frank-Peter T1 - Metal injection moulding of titanium and titanium-aluminides T2 - Key Engineering Materials Y1 - 2012 SN - 1662-9795 IS - 520 SP - 153 EP - 160 ER - TY - GEN A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Lippmann, Thomas A1 - Lottermoser, Lars A1 - Schreyer, Andreas T1 - 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 T2 - Materials Science Forum Y1 - 2014 SN - 1662-9752 IS - 772 SP - 85 EP - 89 ER - TY - GEN A1 - Staron, Peter A1 - Beckmann, Felix A1 - Lippmann, Thomas A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Salgado, Mario A1 - Hort, Norbert A1 - Eckerlebe, Horst A1 - Kainer, Karl Ulrich A1 - Müller, Martin A1 - Schreyer, Andreas T1 - In situ studies of light metals with synchrotron radiation and neutrons T2 - Materials Science Forum Y1 - 2011 SN - 1662-9752 IS - 690 SP - 192 EP - 197 ER - TY - CHAP A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian ED - Palm, Martin ED - Bewlay, Bernard P. ED - Kumar, K. Sharvan ED - Yoshimi, Kyosuke T1 - Influence of Quenching Rates on the Transformation of Ternary Phases in Nb-rich γ-TiAl Alloys T2 - Intermetallic-based alloys for structural and functional applications, symposium held November 29 - December 3, Boston, Massachusetts, U.S.A Y1 - 2011 U6 - https://doi.org/doi:10.1557/opl.2011.30 SP - 107 EP - 112 PB - Cambridge Univ. Press CY - Cambridge ER - TY - GEN A1 - Pyczak, Florian A1 - Appel, Fritz A1 - Limberg, Wolfgang A1 - Lorenz, Uwe A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Schimansky, Frank-Peter T1 - Novel Processing Techniques for gamma-TiAl Alloys T2 - Materials Science Forum Y1 - 2011 SN - 1662-9752 IS - 690 SP - 145 EP - 148 ER - TY - GEN A1 - Stark, Andreas A1 - Oehring, Michael A1 - Pyczak, Florian A1 - Schreyer, Andreas T1 - In Situ Observation of Various Phase Transformation Paths in Nb-Rich TiAl Alloys during Quenching with Different Rates T2 - Advanced Engineering Materials Y1 - 2011 SN - 1527-2648 VL - 18 IS - 8 SP - 700 EP - 704 ER - TY - GEN A1 - Bolz, Sebastian A1 - Oehring, Michael A1 - Lindemann, Janny A1 - Pyczak, Florian A1 - Paul, Jonathan A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Roth-Fagaraseanu, Dan A1 - Schreyer, Andreas A1 - Weiß, Sabine A1 - Schrüfer, Susanne T1 - Microstructure and mechanical properties of a forged beta-solidifying gamma TiAl alloy in different heat treatment conditions T2 - Intermetallics Y1 - 2015 VL - 2015 IS - 58 SP - 71 EP - 83 ER - TY - GEN A1 - Pyczak, Florian A1 - Bauer, Alexander A1 - Göken, Mathias A1 - Lorenz, Uwe A1 - Neumeier, Steffen A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Schell, Norbert A1 - Schreyer, Andreas A1 - Symanzik, Felix T1 - The effect of tungsten content on the properties of L12-hardened Co-Al-W alloys T2 - Journal of Alloys and Compounds Y1 - 2015 SN - 0925-8388 IS - 632 SP - 110 EP - 115 ER - TY - GEN A1 - Oehring, Michael A1 - Lindemann, Janny A1 - Pyczak, Florian A1 - Paul, Jonathan A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Schrüfer, Susanne A1 - Roth-Fagaraseanu, Dan A1 - Schreyer, Andreas A1 - Weiß, Sabine T1 - Microstructure and mechanical properties of a forged β-solidifying γ TiAl alloy in different heat treatment conditions T2 - Intermetallics N2 - 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. KW - TiAl KW - Titanium Aluminides KW - hot die forging KW - TNB-V4 Y1 - 2015 UR - http://www.sciencedirect.com/science/article/pii/S096697951400301X U6 - https://doi.org/10.1016/j.intermet.2014.11.008 SN - 0966-9795 VL - 2015 IS - 58 SP - 71 EP - 83 ER - TY - GEN A1 - Soyama, Juliano A1 - Oehring, Michael A1 - Limberg, Wolfgang A1 - Ebel, Thomas A1 - Kainer, Karl Ulrich A1 - Pyczak, Florian T1 - 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 T2 - Materials and Design Y1 - 2015 SN - 0261-3069 VL - 84 SP - 87 EP - 94 ER - TY - GEN A1 - Soyama, Juliano A1 - Oehring, Michael A1 - Limberg, Wolfgang A1 - Ebel, Thomas A1 - Kainer, Karl Ulrich A1 - Pyczak, Florian T1 - Sintering behaviour of Ti–45Al–5Nb–0.2B–0.2C alloy modifications by additions of elemental titanium and aluminium T2 - Powder Metallurgy Y1 - 2015 SN - 1743-2901 VL - 58 IS - 5 SP - 369 EP - 375 ER - TY - GEN A1 - Stark, Andreas A1 - Rackel, Marcus W. A1 - Tchouaha Tankoua, Aristide A1 - Oehring, Michael A1 - Schell, Norbert A1 - Lottermoser, Lars A1 - Schreyer, Andreas A1 - Pyczak, Florian T1 - In situ High-Energy X-Ray Diffraction during Hot-Forming of a Multiphase TiAl Alloy T2 - Metals Y1 - 2015 SN - 2075-4701 VL - 5 IS - 4 SP - 2252 EP - 2265 ER - TY - GEN A1 - Li, Yuzhi A1 - Pyczak, Florian A1 - Oehring, Michael A1 - Wang, Li A1 - Paul, Jonathan A1 - Lorenz, Uwe A1 - Yao, Zekun T1 - Thermal Stability of gamma' phase in long-term aged Co-Al-W alloys T2 - Journal of Alloys and Compounds Y1 - 2017 SN - 0925-8388 VL - 729 SP - 266 EP - 276 ER - TY - GEN A1 - Li, Yuzhi A1 - Pyczak, Florian A1 - Paul, Jonathan A1 - Oehring, Michael A1 - Lorenz, Uwe A1 - Yao, Zekun T1 - Microstructure evolution in L12 hardened Co-base superalloys during creep T2 - Journal of Materials Research Y1 - 2017 SN - 2044-5326 SN - 0884-2914 VL - 32 IS - 24 SP - 4522 EP - 4530 ER - TY - GEN A1 - Paul, Jonathan A1 - Oehring, Michael A1 - Appel, Fritz A1 - Pyczak, Florian T1 - Depth resolved near-surface residual stresses in γ-based TiAl before and after high-temperature exposure T2 - Intermetallics Y1 - 2017 SN - 0966-9795 VL - 84 SP - 103 EP - 111 ER -