Application of feal intermetallic phase matrix based alloys in the turbine components of a turbocharger

• Main Author: J. Cebulski
• Format: Article
• Language: English
• Published: Croatian Metallurgical Society 2015-01-01
• Series: Metalurgija
• Subjects: FeAl; structure; intermetallic phase; corrosion; turbocharger
• Online Access: http://hrcak.srce.hr/file/187215

This paper presents a possible application of the state-of-the-art alloys based on the FeAl intermetallic phases as materials for the manufacture of heat-proof turbine components in an automobile turbocharger. The research was aimed at determining the resistance to corrosion of Fe40Al5CrTiB alloy in a gaseous environment containing 9 % O₂ + 0,2 % HCl + 0,08 % SO₂ + N₂. First the kinetics of corrosion processes for the considered alloy were determined at the temperatures of 900 °C, 1 000 °C and 1 100 °C, which was followed by validation under operating conditions. To do so, the tests were carried out over a distance of 20 000 km. The last stage involved examination of the surfaces after the test drive. The obtained results are the basis for further research in this field.