Structure and Properties of Ti-Al Intermetallic Layers Produced on Titanium Alloys by a Duplex Treatment

Abstract:

The rapid progress in engineering enhances the demands set on materials requiring better mechanical properties, resistance to frictional wear, corrosion and erosion etc. These demands can be also satisfied by e.g. applying various surface engineering techniques which permit modifying the microstructure, phase and chemical composition of the surface layers produced on the treated parts. A prospective line of the development is the production of the intermetallic layers by combining various methods aimed to improve essentially the performance properties and service life of the treated parts. The paper presents properties of the Al2O3+TiAl3+TiAl+Ti3Al type layer produced on titanium alloy Ti6Al2Cr2Mo by duplex method combined with magnetron sputtering process of aluminium coating with a glow discharge assisted treatment. The results of the examinations: microstructure, chemical and phase composition, frictional wear resistance and mechanical properties are discussed. Produced composite surface layers have the diffusion character and a precisely specified structure, chemical and phase composition and good wear and corrosion resistance what can widen significantly application range of treated parts.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 3883-3886
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.3883
• Online since: January 2005
• Authors: Tadeusz Wierzchoń, Halina Garbacz, M. Ossowski
• Keywords: Composite Layers, Duplex Treatment, Intermetallic Layers Ti-Al Type, Mechanical Property, Structure, TiAl, Wear Resistance

References

[1] G. Santhoff, Intermetallics (VCH Verlagsgesellschaft mbH, Weinheim 1995).

[2] E.A. Loria, Intermetalics, Vol. 8 (2000) p.1339.

[3] F. Appel, U. Brossman, U. Christoph et al., Adv. Eng. Mat., vol. 2, 11(2000), p.699.

[4] G. Lutjering, J.C. Williams, Titanium (Springer- Verlag, Berlin Heidelberg 2003).

[5] D.W. McKee, K.I. Luthra, Surf. and Coat. Techn., Vol. 56, 2(1993) p.109.

[6] T. Matsubara, T. Shibustami et al., Intermetalics Vol. 8 (2000) p.815.

[7] E. Łunarska, M. Ziomek-Mroz, A. Michalski, Intermetalics, Vol. 9 (2001) p.711.

[8] T. Wierzchon, Surf. Coat. Techn., Vol. 180-181 (2004) p.458.

[9] Polish Standard PN-83/H-D4302. Strength testing of metals.

[10] T. Burakowski, T. Wierzchoń, Surface Engineering of Metals (CRC Press, Boca Raton, London, 1999).