Title: The precipitation processes in the Manaurite XM superalloy during 1000 hours of ageing

Authors: Walenty Jasinski, Pawel Zawada

Addresses: Institute of Materials Engineering, Szczecin University of Technology, Al. Piastow 17, 70–310 Szczecin, Poland. ' Institute of Materials Engineering, Szczecin University of Technology, Al. Piastow 17, 70–310 Szczecin, Poland

Abstract: This paper presents the results of the investigations of mechanical properties and microstructures in the state of delivery and after 1000 h of ageing the Manaurite XM superalloy samples that are cut out from a catalytic centrifugal cast pipe. The ageing of catalytic pipes| material in the temperature range of 750°C to 900°C causes the precipitation of intermetallic phases in an alloyed austenite matrix. These changes affect the mechanical properties of the material of pipes.

Keywords: reforming; Fe-Ni-Cr alloys; microstructure; G-phase; precipitation processes; Manaurite XM superalloy; mechanical properties; ageing; centrifugal pipes; alloyed austenite matrix.

DOI: 10.1504/IJMMP.2008.022039

International Journal of Microstructure and Materials Properties, 2008 Vol.3 No.4/5, pp.607 - 615

Published online: 17 Dec 2008 *

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