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Analysis of microstructural changes during high temperature exposure by means of non-destructive micro-magnetic methods

: Rabung, Madalina; Kuhn, Bernd

Fulltext urn:nbn:de:0011-n-3091948 (670 KByte PDF)
MD5 Fingerprint: b1e752fa27cb7eeff4d5711deee4a35d
Created on: 17.10.2014

Lecomte-Beckers, J. ; Forschungszentrum Jülich; Univ. of Liege; Cranfield University:
10th Liège Conference on Materials for Advanced Power Engineering 2014 : Held on 14th – 17th of September 2014 at the Palais des Congrès in Liège, Belgium
Jülich: Forschungszentrum Jülich, 2014
Liège Conference <10, 2014, Liège>
Conference Paper, Electronic Publication
Fraunhofer IZFP ()
non-destructive testing; microstructure; precipitation; nucleation; material aging

Microstructural changes during thermal ageing of ferromagnetic materials can be detected in a rapid and nondestructive way by means of micro-magnetic methods. The Fraunhofer Institute for Nondestructive Testing(IZFP, Saarbrücken, Germany) prove the suitability of the technique for the characterization of microstructural changes caused by both mechanical pre-treatment and thermal ageing (at different times and temperatures) of the ferritic steel Crofer 22® H. The testing scheme was based on four magnetic methods: Barkhausen noise, incremental permeability, upper harmonics and eddy current analysis.