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JOM

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Density Reduction of Mo-Si-B Alloys by Vanadium Alloying

  • Julia Becker
  • Ulf Betke
  • Michael Hoffmeister
  • Manja Krüger
Recent Advances in Design and Development of Refractory Metals and Alloys
  • 26 Downloads

Abstract

Potential Mo-V-Si-B materials with ~ 17% reduced density compared with the reference alloy Mo-9Si-8B have been developed. V was found to be soluble in all three phases within the Moss-Mo3Si-Mo5SiB2 triangle. Due to a high phase fraction of Moss phase and its homogeneous distribution, reasonable fracture toughness of 13.3 MPa√m is achieved. On the other hand, the creep resistance was reduced by V alloying, while the normalized creep strength of the novel alloy shows good potential as a lightweight version of this class of material for use in structural applications.

Notes

Acknowledgements

Financial support in the framework of the DFG Graduate School 1554 “Micro macro interactions of structured media and particle systems” is greatly acknowledged. We thank F. Gang (KIT) for the consolidation by the FAST method, Dr. E. Wessel (FZ Jülich) for SEM analyses of alloy Mo-40V-9Si-8B, and V. Bolbut (OVGU) for assistance with the creep tests.

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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  • Julia Becker
    • 1
  • Ulf Betke
    • 1
  • Michael Hoffmeister
    • 1
  • Manja Krüger
    • 2
    • 3
  1. 1.Institut für Werkstoff- und Fügetechnik, Otto-von-Guericke-Universität MagdeburgMagdeburgGermany
  2. 2.Forschungszentrum Jülich, IEK-2JülichGermany
  3. 3.Jülich Aachen Research Alliance – JARA EnergyJülichGermany

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