EFFECT OF ALLOYING ELEMENTS ON PROPERTIES OF PM Ti-Al-Si ALLOYS

Authors

  • Pavel Novák
  • Jan Kříž
  • Alena Michalcová
  • Dalibor Vojtěch

DOI:

https://doi.org/10.12776/ams.v19i4.121

Keywords:

reactive sintering, mechanical properties testing, intermetallic compounds, oxidation

Abstract

This work was devoted to the description of the effect of alloying by transition metals (Cr, Cu, Fe) on the structure and properties of TiAl15Si15 alloy. Alloying elements does not form separate phases, being dissolved in titanium silicide or aluminide. Cu was found predominantly in aluminide phase, while iron was found to bethe silicide-former. Chromium dissolved in both aluminide and silicide in almost comparable amounts. All applied alloying elements increased the wear resistance, but reduced the room-temperature compression strength. The addition of iron and chromium strongly increase the thermal stability at 1000°C by stabilizing the silicide phase.

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Published

2013-12-31

How to Cite

Novák, P. ., Kříž, J. ., Michalcová, A. ., & Vojtěch, D. . (2013). EFFECT OF ALLOYING ELEMENTS ON PROPERTIES OF PM Ti-Al-Si ALLOYS. Acta Metallurgica Slovaca, 19(4), 240–246. https://doi.org/10.12776/ams.v19i4.121

Issue

Vol. 19 No. 4 (2013): Volume 19, no. 4, 2013

Section

Research papers