Phase Transition and Ordering Temperatures of TiAl-Mo Alloys Investigated by In Situ Diffraction Experiments
|Periodical||Materials Science Forum (Volumes 654 - 656)|
|Edited by||Jian-Feng Nie and Allan Morton|
|Citation||Thomas Schmoelzer et al., 2010, Materials Science Forum, 654-656, 456|
|Online since||June, 2010|
|Authors||Thomas Schmoelzer, Svea Mayer, Frank Haupt, Gerald A. Zickler, Christian Sailer, Lars Lottermoser, Volker Güther, Klaus Dieter Liss, Helmut Clemens|
|Keywords||Diffraction, Phase Diagram, Phase Transformation, Thermodynamic Calculation, TiAl|
Intermetallic TiAl alloys with a significant volume fraction of the body-centered cubic β-phase at elevated temperatures have proven to exhibit good processing characteristics during hot-working. Being a strong β stabilizer, Mo has gained importance as an alloying element for so-called β/γ-TiAl alloys. Unfortunately, the effect of Mo on the appearing phases and their temperature dependence is not well known. In this work, two sections of the Ti-Al-Mo ternary phase diagram derived from experimental data are shown. These diagrams are compared with the results of in-situ high-temperature diffraction experiments using high-energy synchrotron radiation.