A brief overview and metallography for commonly used materials in aero jet engine construction


Aluminium, titanium, and nickel base alloys are mostly and widely used for aircraft jet engine construction. A proper evaluation of its microstructure is important from working safety point of view. To receive a well prepared sample of microstructure, some important steps have to be undertaken. Except for proper grinding and polishing of a sample, structure developing is a significant step, too. In order to develop microstructure various chemical reagents were used to achieve the best results for microstructure evaluation. The chemical reagents were used according to the previous knowledge and some new ones were also tested. Aluminium AK4-1č, titanium VT – 8, and nickel VŽL – 14 and ŽS6 – U alloys were used as an experimental materials. Alloy AK4-1č is used for fan blade production with working temperatures up to 300°C. It is a forged piece of metal machined down into final shape by five-axe milling machine. Alloy VT – 8 is used for high pressure compressor rotor blade production with working temperatures up to 500°C. Blades are forged as well and finally grinded. Finally nickel base alloys VŽL – 14 and ŽS6 – U are used for turbine blade production with working temperatures up 950°C. Blades for turbine are casted into mould with reducible models.

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  • Belan J., Kuchariková L., Vaško A., Chalupová M., Švecová I. 2016. Employing various metallography methods at high temperature alloy fatigue tests evaluationl. Production Engineering Archives, Vol. 13, No. 4, 11-15.

  • Campbell F. C. 2006. Manufacturing Technology for Aerospace Structural Materials, Elsevier Ltd., Amsterdam.

  • Konečná R. 2010. Practical Metallography. VEGA. University of Žilina, Žilina.

  • Kuchariková L., Tillová E., Matvija M., Belan J., Chalupová M. 2017. Study of the precipitation hardening process in recycled Al-Si-Cu cast alloys. Archives of metallurgy and materials, Vol. 62, Iss. 1, 397-403.

  • Michna Š., et al. 2005. Aluminium Handbook. Adin, 1st Edition, Prešov.

  • Moiseyev V. N. 2006. Titanium Alloys: Russian Aircraft and Aerospace Application, CRC Press, Taylor & Francis Group LLC.

  • Moiseyev V. N. 2004. Structural titanium alloys in modern mechanical engineering. Metal Science and Heat Treatment, Vol. 46, No. 3-4, 115-120.

  • Peters M., Leyens C. 2009. Aerospace and Space Materials, Materials Science and Engineering - Volume III, Edit. Rees D. Rawlings, EOLSS Publishers Company Limited.

  • Sieniawski J., Ziaja W., Kubiak K., Motyka M. 2013. Microstructure and Mechanical Properties of High Strength Two-Phase Titanium Alloys, Titanium Alloys – Advances in Properties Control, Edit. Sieniawski, J., Ziaja, W., IN-TECH Open Acces.

  • Sokolovská Ž. 1995. Construction materials for aircraft jet engine, 1st Edition, VVŠL, Košice.

  • Tillová E., Chalupová M., Hurtalová L., Bonek M., Dobrzański L. A. 2011. Structural analysis of heat treated automotive cast alloy, Journal of achievements in materials and manufacturing engineering, Vol. 47, No. 1, 19-25.

  • Ulewicz R., Tomski P. 2017. The effect of high-frequencies loading on the fatigue cracking of nodular cast iron, METALURGIJA, Vol. 56, Iss. 1-2, 33-36.


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