Dresden 2009 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 25: Topical Session High Temperature Materials I

MM 25.1: Topical Talk

Wednesday, March 25, 2009, 10:15–10:45, IFW A

Intermetallic phases for structural applications at high temperatures — •Martin Palm — Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, D-40237 Düsseldorf, Germany

Intermetallic phases - intermetallics for short - have evolved within the last 25 years from being only of interest to scientists because of their sometimes peculiar crystallographic structures and fascinating physical properties, to form the basis for a new class of materials that have proven their capability to be used for structural applications up to very high temperatures and in demanding environments. In general intermetallics often have relatively high melting temperatures, sometimes above those of the constituting elements, and in addition they may offer other attractive properties such as an outstanding corrosion resistance, remarkable low density and superior mechanical properties. Therefore, a considerable number of material developments have taken place in order to exploit their potential for structural applications at high temperatures. In the focus of these developments were the aluminides, namely Ni3Al, NiAl, Ti3Al, TiAl, Fe3Al and FeAl, though also silicides and some more specific intermetallics have gained attention. The presentation will give an overview about properties which make intermetallics that attractive for high temperature applications, a summary on individual material developments such as gamma titanium aluminides as well as addressing current research issues.