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Oxidation Behavior of Superalloy IN 713 Fabricated by Metal Injection Molding

  • Naicheng Sheng
  • Katharina Horke
  • Andreas Meyer
  • Ralf Rettig
  • Robert F. Singer
Original Paper
  • 60 Downloads

Abstract

The oxidation behavior of superalloy IN 713 fabricated by metal injection molding (MIM) was investigated and compared with standard cast material plus hot isostatic pressing (Cast + HIP). The carbon content of MIM alloys varied in the experiments due to the use of different starting powders. At all temperatures and times investigated, weight gain increased strongly with carbon content. Carbon in the alloys was present mainly in the form of carbides. Carbides react with oxygen during oxide scale formation. Microscopy showed that selective oxidation of carbides led to the formation of protrusions and cracks in the oxide layer. In this way, the protective effect of the oxide scale was weakened.

Keywords

Superalloys Oxidation Metal injection molding IN 713LC Carbides 

Notes

Acknowledgements

The authors acknowledge funding by Rolls-Royce Germany. The work was done within the framework of the project RHinnoVer (Funding Code: 20T1111). The authors gratefully acknowledge the Bundesministerium für Wirtschaft und Energie (BMWi for the financial support). We would also like to acknowledge Prof. Virtanen and Mr. Martin Weiser from the Institute of Surface Science and Corrosion at the Department of Materials Science and Engineering (University of Erlangen-Nuremberg) for the kind help in performing the oxidation experiments at 1000 °C and 1100 °C and valuable suggestions on the paper. We acknowledge the technical staff in WTM for the help during the oxidation experiments and metallography analysis process.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Joint Institute of Advanced Materials and Processes (ZMP)Friedrich-Alexander University of Erlangen-Nuremberg (FAU)FürthGermany
  2. 2.Rolls-Royce Deutschland Ltd & Co. KGBlankenfelde-MahlowGermany
  3. 3.Chair of Materials Science and Engineering for Metals (WTM)Friedrich-Alexander University of Erlangen-Nuernberg (FAU)ErlangenGermany
  4. 4.ThermoCalc Software ABStockholmSweden

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