Berlin 2012 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 17: Poster Session

MM 17.67: Poster

Monday, March 26, 2012, 17:00–19:00, Poster B

Analysis of the nitrogen content of carbide particles in a gamma'-strengthened Ni-based superalloy — •Martin Peterlechner, Harald Rösner, and Eckhard Nembach — Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, Wilhelm Klemm Straße 10, 48149 Münster, Germany

Ni-based superalloys are commercial construction materials used at elevated operating temperatures. Carbide particles contribute to their mechanical properties. In the past these carbides were referred to as carbo nitrides but it is a question of long standing whether they do contain nitrogen and if so in what concentration. We have examined the nitrogen content of carbide particles of (Ti,Mo)-C carbides in a commercial superalloy (NIMONIC PE16) by electron energy loss spectroscopy (EELS) and energy dispersive X-ray analysis (EDX). The results suggest that the content of nitrogen in these carbides is negligible.