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Structure and Properties of MASHS Titanium Aluminide–Based Powder Alloyed with Chromium

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Abstract:

Structure and properties of MASHS powder Ti-46Al-8Cr, at. %, have been investigated. The powder is characterized by the multiphase dispersed strengthened structure with coherent precipitates/matrix bonding. Main structural constituents of the powder are titanium aluminides alloyed with chromium: γ-TiAl(Cr), Al0,67Cr0,08Ti0,25 and α2-Ti3Al(Cr). Average powder microhardness is 313 HV0.25. High-quality detonation coatings with high hardness (940-1100 HV) and low porosity (less than 1%) have been obtained from the synthesized powder. The coatings exhibit good oxidation behaviour at 900°C.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1589-1592

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1589

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Online since:

January 2007

Authors:

Tatsiana Talaka, Aliaksandr Ilyushchanka, Andrey Letsko, Tatsiana Hasak

Keywords:

Mechanically Activated Self-Propagating High-Temperature Synthesis (MASHS), Oxidation Resistance, Powder, Titanium Aluminide

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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