High Temperature Laser-Scanning Confocal Microscopy for the in-situ Investigation of Grain Growth and Phase Transformations in Intermetallic γ-TiAl based Alloys
-
T. Klein
, S. Niknafs , R. Dippenaar , H. Clemens und S. Mayer
Abstract
Solid-state phase transformations and grain growth in an intermetallic γ-TiAl based alloy were examined using a confocal laser-scanning microscope. This apparatus allows the in-situ visualization of the microstructural development at high temperatures. The sample is thus placed into a furnace and a predetermined temperature profile is followed, while the surface is scanned using a laser. The contrast is gained by the thermal etching.
Kurzfassung
Festphasenumwandlungen und Kornwachstum wurden an einer intermetallischen γ-TiAl Basislegierung mit einem konfokalen Laser-Scanning Mikroskop untersucht. Mit diesem System ist es möglich, die Mikrostrukturentwicklung bei hoher Temperatur in-situ zu visualisieren. Dabei wird die Probe in einen Ofen eingebracht und ein voreingestelltes Temperaturprofil durchlaufen. Währenddessen wird die Oberfläche mit einem Laser abgerastert und der Kontrast, welcher durch thermische Ätzung entsteht, abgebildet.
References / Literatur
[1] Clemens, H.; Mayer, S.: Design, Processing, Microstructure, Properties, and Applications of Advanced Intermetallic TiAl Alloys, Adv Eng Mater, 15, 2013, p. 191 DOI: 10.1002/adem.201200231Suche in Google Scholar
[2] Appel, F.; Paul, J.D.H.; Oehring, M.: Gamma Titanium Aluminide Alloys: Science and Technology, Wiley-VCH, 2011 DOI: 10.1002/9783527636204Suche in Google Scholar
[3] Baker, I.; Heilmaier, M.; Kumar, S.; Yoshimi, K.: Intermetallic-Based Alloys - Science, Technology and Applications, Mater. Res. Soc. Symp. Proc.; 2012Suche in Google Scholar
[4] Clemens, H.; Wallgram, W.; Kremmer, S.; Güther, V.; Otto, A.; Bartels, A.: Design of Novel β-Solidifying TiAl Alloys with Adjustable β/B2-Phase Fraction and Excellent Hot-Workability, Adv Eng Mater, 10, 2008, p. 707 DOI: 10.1002/adem.200800164Suche in Google Scholar
[5] Schwaighofer, E.; Clemens, H.; Mayer, S.; Lindemann, J.; Klose, J.; Smarsly, W.; Güther, V.: Microstructural design and mechanical properties of a cast and heat-treated intermetallic multi-phase γ-TiAl based alloy, Intermetallics44, 2014, p. 128 DOI: 10.1016/j.intermet.2013.09.010Suche in Google Scholar
[6] Kim, Y.-W.: Microstructural evolution and mechanical properties of a forged gamma titanium aluminide alloy, Acta Metall Mater, 40, 1992, p. 1121 DOI: 10.1016/0956-7151(92)90411-7Suche in Google Scholar
[7] Schloffer, M.; Schmoelzer, T.; Mayer, S.; Schwaighofer, E.; Hawranek, G.; Schimansky, F.-P.; Pyczak, F.; Clemens, H.: The characterisation of a powder metallurgically manufactured TNM™ titanium aluminide alloy using complimentary quantitative methods, Prakt Metallogr, 48, 2011, p. 594 DOI: 10.3139/147.110138Suche in Google Scholar
[8] Phelan, D.; Reid, M.H.; Dippenaar, R.: High Temperature Laser Scanning Confocal Microscopy for real-time studies of phase transformations, Microsc Microanal, 11, 2005, p. 670 DOI: 10.1017/S1431927605509693Suche in Google Scholar
[9] Schwaighofer, E.; Rashkova, B.; Clemens, H.; Stark, A.; Mayer, S.: Effect of carbon addition on solidification behavior, phase evolution and creep properties of an intermetallic β-stabilized γ-TiAl based alloy, Intermetallics, 46, 2014, p. 173 DOI: 10.1016/j.intermet.2013.11.011Suche in Google Scholar
[10] Wu, Y.; Park, Y.W.; Park, H.S.; Hwang, S.K.: Microstructural development of indirect-extruded TiAl-Mn-Mo-C intermetallic alloys during aging, Mater Sci Eng A, 347, 2003, p. 171 DOI: 10.1016/S0921-5093(02)00598-1Suche in Google Scholar
© 2015, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Editorial
- Editorial
- Technical Contributions/Fachbeiträge
- Microstructure Characterization of Intermetallic γ-TiAl Based Alloys after High-Temperature Deformation
- Influence of Discontinuous Precipitation on the Creep Behavior of a β-Solidified γ-TiAl Based Alloy
- High Temperature Laser-Scanning Confocal Microscopy for the in-situ Investigation of Grain Growth and Phase Transformations in Intermetallic γ-TiAl based Alloys
- Metallurgical Failure Investigation of Quench Cracking in Hexagonal Bolt Head Fasteners
- Meeting Diary/Veranstaltungskalender
- Meeting Diary
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Editorial
- Editorial
- Technical Contributions/Fachbeiträge
- Microstructure Characterization of Intermetallic γ-TiAl Based Alloys after High-Temperature Deformation
- Influence of Discontinuous Precipitation on the Creep Behavior of a β-Solidified γ-TiAl Based Alloy
- High Temperature Laser-Scanning Confocal Microscopy for the in-situ Investigation of Grain Growth and Phase Transformations in Intermetallic γ-TiAl based Alloys
- Metallurgical Failure Investigation of Quench Cracking in Hexagonal Bolt Head Fasteners
- Meeting Diary/Veranstaltungskalender
- Meeting Diary