Article
Licensed
Unlicensed Requires Authentication

Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy

  • , , , , , , and
Published/Copyright: May 23, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
Practical Metallography
From the journal Practical Metallography Volume 48 Issue 12

Abstract

Intermetallic TiAl alloys are light-weight high-temperature materials and intended to partly replace Ni based alloys in jet engines. Due to difficult forming operations, component prices are high and limit the possible field of application. During hot-working, recovery and recrystallization effects determine the microstructural evolution and thereby the mechanical properties of the finished part as well as its behavior during deformation. To study the occurring phenomena, in-situ diffraction experiments with high-energy X-rays were conducted. By means of this method, the dominating processes were identified. The results were validated through electron back scatter diffraction experiments.

Kurzfassung

Intermetallische TiAl-Legierungen sind hochwarmfeste Werkstoffe geringer Dichte und sollen zum Teil Legierungen auf Nickelbasis in Strahltriebwerken ersetzen. Auf Grund komplexer Umformschritte sind die Preise der Teile hoch und schränken den möglichen Anwendungsbereich ein. Während der Warmverformung werden die Entwicklung der Mikrostruktur und dadurch die mechanischen Eigenschaften des fertigen Teils sowie dessen Verhalten bei der Umformung von Erholungs- und Rekristallisationsvorgängen bestimmt. Um diese Phänomene zu untersuchen wurden in-situ Beugungsexperimente mit hochenergetischer Röntgenstrahlung durchgeführt. Mit Hilfe des verwendeten Verfahrens wurden die vorherrschenden Prozesse charakterisiert und die gewonnenen Resultate mittels EBSD-Untersuchungen validiert.

Übersetzung: J. Fritsche

Thomas Schmoelzer is currently working on his PhD thesis at the Montanuniversität Leoben. His research focus lies on the characterization of TiAl alloys by means of diffraction techniques.

References / Literatur

[1] Clemens, H.; Wallgram, W.; Kremmer, S.; Güther, V.; Otto, A.; Bartels, A.: Advanced Engineering Materials2008, 10, 707.10.1002/adem.200800164Search in Google Scholar

[2] Clemens, H.; Chladil, H.F.; Wallgram, W.; Bock, B.; KremmerS.; OttoA.; Güther, V.; Bartels, A.: Structural Aluminides for Elevated Temperatures Symposion, TMS, New Orleans, 2008, 217Search in Google Scholar

[3] WallgramW.; Schmoelzer, T.; Cha, L; Das, G.; Güther, V.; Clemens, H.: International Journal of Materials Research2009, 100, 1021.10.3139/146.110154Search in Google Scholar

[4] Liss, K.-D.; Bartels, A.; Schreyer, A.; Clemens, H.: Textures and Microstructures2010, 35, 219.10.1080/07303300310001634952Search in Google Scholar

[5] Schreyer, A; Diffraction Methods in Engineering Materials Science, Wiley-VCH, Weinheim, Germany2008.Search in Google Scholar

[6] Tschentscher, T.; Suortti, P.: Journal of Synchrotron Radiation1998, 5, 286–292.10.1107/S0909049597014775Search in Google Scholar

[7] Daniels, J.E.; Drakopoulos, M.: Journal of Synchrotron Radiation2009, 16, 463–468.10.1107/S0909049509015519Search in Google Scholar

[8] Kainuma, R.; Fujita, Y.; Mitsui, H.; Ohnuma, I.; Ishida, K.; Intermetallics2000, 8, 855–86710.1016/S0966-9795(00)00015-7Search in Google Scholar

[9] Tetsui, T.A.: Scripta Materialia2002, 47, 399–403.10.1016/S1359-6462(02)00158-6Search in Google Scholar

[10] Liss, K.-D.; Schmoelzer, T.; Yan, K.; Reid, M.; Peel, M.; Dippenaar, R.; Clemens, H.: J. Appl. Phys.2009, 106, 113526.10.1063/1.3266177Search in Google Scholar

[11] Liss, K.-D.; Garbe, U.; Li, H; Schambron, T; Almer, J.D.; Yan, K.: Advanced Engineering Materials2009, 11, 637–640.10.1002/adem.200900094Search in Google Scholar

[12] Sakai, T.A.: ActaMetallurgica1984, 32, 189–209.10.1016/0001-6160(84)90049-XSearch in Google Scholar

[13] Doherty, R.D.: Materials Science and Engineering A1997, 238, 219–274.10.1016/S0921-5093(97)00424-3Search in Google Scholar

Received: 2011-1-19
Accepted: 2011-9-1
Published Online: 2013-05-23
Published in Print: 2011-12-01

© 2011, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy
  7. Automated SEM/EDX Particle Analysis to Determinate Non-Metallic Inclusions in Steel Samples: Round Robin Tests Aiming at Studying the Comparability of Results from Different Measurement Systems
  8. A Procedure for in situ Identification of the Intermetallic AlTMSi Phase Precipitates in the Microstructure of the Aluminum Alloys
  9. Liquation Cracks in Hot Upset Low Alloy Steel Screw Heads
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110140

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy
  7. Automated SEM/EDX Particle Analysis to Determinate Non-Metallic Inclusions in Steel Samples: Round Robin Tests Aiming at Studying the Comparability of Results from Different Measurement Systems
  8. A Procedure for in situ Identification of the Intermetallic AlTMSi Phase Precipitates in the Microstructure of the Aluminum Alloys
  9. Liquation Cracks in Hot Upset Low Alloy Steel Screw Heads
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
Downloaded on 12.4.2026 from https://www.degruyterbrill.com/document/doi/10.3139/147.110140/html
Scroll to top button