Entwicklung einer ausscheidungsverfestigten Eisenbasislegierung für Hochtemperaturanwendungen

Translated title of the contribution: Development of a precipitation strengthened iron-base alloy for high-temperature applications

Flora Reka Godor

Research output: ThesisDoctoral Thesis


The aim of the present work was to evaluate the potential of an alloy based on the alloying system Fe-Al-Ni-Ti(-Cr) for applications at high temperatures. Fe-Al-Ni-Ti(-Cr) alloys are composed of a ferritic matrix strengthened by a high volume fraction of intermetallic precipitates. In the first part of this thesis the effect of different alloying elements on the alloy’s properties was investigated. Therefore, specific heat treatments were conducted along with scanning electron microscopy, transmission electron microscopy, X-ray diffraction and differential scanning calorimetry measurements. Furthermore, the mechanical properties of the alloys were determined from room temperature up to high temperatures by means of tensile, compression and creep tests. In the second part of this thesis the focus was laid on comparing different processing routes. The alloys were produced via the conventional ingot-metallurgy as well as by a powder metallurgical approach. Alloys in the as-cast state, after various heat treatments and after forging were then investigated in detail. For comparison, alloys were manufactured from gas-atomized powders or mechanically alloyed powders through hot-isostatic pressing. Both processing routes could be employed successfully, whereby the properties of the cast alloys seem to be promising for technical application.
Translated title of the contributionDevelopment of a precipitation strengthened iron-base alloy for high-temperature applications
Original languageGerman
Awarding Institution
  • Montanuniversität
  • Bernhard, Christian, Assessor B (internal)
  • Mayer, Svea, Co-Supervisor (internal)
  • Clemens, Helmut, Assessor A (internal)
Publication statusPublished - 2018

Bibliographical note

embargoed until 28-06-2023


  • High-temperature ferrite
  • Alloy development
  • microstructure characterization
  • mechanical properties
  • processing routes

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