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High Temperature Laser-Scanning Confocal Microscopy for the in-situ Investigation of Grain Growth and Phase Transformations in Intermetallic γ-TiAl based Alloys

Presented at the Metallography Conference 2014 in Leoben, Austria
  • T. Klein , S. Niknafs , R. Dippenaar , H. Clemens and S. Mayer
Published/Copyright: May 1, 2015
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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.


Translation: E. Engert


References / Literatur

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Published Online: 2015-05-01
Published in Print: 2015-05-15

© 2015, Carl Hanser Verlag, München

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