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Process-Oriented Microstructure Evolution of Vss-V3Si-V5SiB2 Materials

  • M. Krüger and B. Köppe-Grabow
Published/Copyright: April 28, 2017
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Practical Metallography
From the journal Practical Metallography Volume 54 Issue 5

Abstract

Vanadium silicide alloys are potentially interesting high temperature materials, since they combine high mechanical strength at temperatures of up to 1 000 °C with a low density. In this study, the microstructures of innovative V-Si-B high temperature materials are examined using different analytical methods. The selected V-9Si-13B model alloy was manufactured using a powder metallurgical process route as well as an ingot metallurgical process. The alloys show a vanadium solid solution phase as well as the high-strength silicide phases V3Si and V5SiB2. Especially for the powder metallurgically fabricated alloy, showing finely dispersed phases, the quantification of microstructural constituents is difficult. The phases, however, can be separated from one another via computer tomography.

Kurzfassung

Vanadium-Silizid-Legierungen stellen potentiell interessante Hochtemperaturwerkstoffe dar, da sie hohe mechanische Festigkeiten bei Temperaturen bis etwa 1 000 °C mit einer geringen Dichte kombinieren. In dieser Studie werden die Mikrostrukturen von neuartigen V-Si-B-Hochtemperaturwerkstoffen mittels verschiedener Analysemethoden untersucht, wobei die Herstellung der ausgewählten Modell-Legierung V-9Si-13B sowohl über eine pulvermetallurgische Prozessroute als auch über einen schmelzmetallurgischen Prozess erfolgt. Die Legierungen weisen eine Vanadium-Mischkristallphase sowie die hochfesten Silizidphasen V3Si und V5SiB2 auf. Insbesondere bei der pulvermetallurgisch hergestellten Legierungsvariante mit sehr fein verteilten Phasen ist die Quantifizierung der Gefügebestandteile schwierig. Mittels Computertomographie können die Phasen allerdings klar voneinander separiert werden.

Translation: M. Lackas

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Received: 2017-02-02
Accepted: 2017-02-27
Published Online: 2017-04-28
Published in Print: 2017-05-17

© 2017, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Process-Oriented Microstructure Evolution of Vss-V3Si-V5SiB2 Materials
  7. SEM and TEM Methods for the Quantification of Gamma-Prime Precipitates in Nickel Alloys
  8. Possibilities and Limits of Color Etching According to Klemm
  9. Failure Analysis
  10. 10.3139/147.110442
  11. Meeting Diary/Veranstaltungskalender
  12. Meeting Diary
https://doi.org/10.3139/147.110456

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Process-Oriented Microstructure Evolution of Vss-V3Si-V5SiB2 Materials
  7. SEM and TEM Methods for the Quantification of Gamma-Prime Precipitates in Nickel Alloys
  8. Possibilities and Limits of Color Etching According to Klemm
  9. Failure Analysis
  10. 10.3139/147.110442
  11. Meeting Diary/Veranstaltungskalender
  12. Meeting Diary
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