Application of Electron Beam Welding in the Production of TEMPALOY AA1 and T92 Butt Joints of Pipes Assigned for the Energy Industry

Abstract:

One of the main problems with the use of steels for elevated temperatures is their limited weldability. This is mainly due to the fact that these materials may contain in their chemical composition. Due to the susceptibility to cold cracking, PWHT is necessary, especially in high-stiffness welded structures. In addition, depending on the condition after heat treatment or in the absence of heat treatment, precipitates may appear in the microstructure of the steel, affecting its mechanical properties. It is important in this case to ensure the high quality of welded joints, which means that the manufacturer has to demonstrate a very high technical culture. Currently, thin-walled pipe butt joints are welded manually using a tungsten electrode with solid wire material (TIG method). One of the solutions that can significantly speed up the welding process of components for work at elevated temperatures is the use of an electron beam welding. In addition, the ability to make welded joints without the use of filler material and to achieve narrow heat-affected zones may find application in the welding of modern materials used in the power industry. This paper presents the welding experience of materials assigned for the power industry (TEMPALOY AA1 and T92) by use of electron beam. In this article authors present the results of tests gained during first steps of welding welded joints. The article also includes preliminary results on the service life of the fabricated joints.

• Periodical: Key Engineering Materials (Volume 1040)
• Pages: 39-45
• DOI: https://doi.org/10.4028/p-6zOdWg
• Online since: January 2026
• Authors: Krzysztof Kwiecinski*, Hanna Purzynska, Michal Urzynicok, Adam Zieliński, Karol Sówka, Robert Jachym
• Keywords: Advance Manufacturing, But Joints, Creep Test, EBW, Electron Beam Welding, Fabrication, Pipes, Processing, T92, TEMPALOY AA1, Thermec’2025, Welding

References

[1] Karaczun Z, Poland 2050 – at the coal crossroads. The publication was created as part of the project "Low-emission Poland 2050" financed by funds received from the European Climate Foundation, Warsaw, 2012 r.

[2] Ministerstwo Gospodarki. Sprawozdanie z wyników monitorowania bezpieczeństwa dostaw energii elektrycznej. Za okres od dnia 1 stycznia 2009 r. do dnia 31 grudnia 2010 r. Warszawa, 2011 r.

[3] Di Gianfrancesco A, Materials for Ultra-Supercritical and Advenced Ultra-Supercritical Power Plants. Woodhead Publishing, (2017)

DOI: 10.1016/b978-0-08-100552-1.05001-6

[4] Brózda J., Jachym J., Kwieciński K., Łomozik M., Węglowski M. St.: Stale konstrukcyjne i ich spawalność. Instytut Spawalnictwa, Gliwice, 2017.

[5] Zielińska-Lipiec A., Czyrska-Filemonowicz A., Ennis P.J., Proc. Int. Conf. Materials for Advanced Power Engineering and other Applications. Liege (1998)

[6] K Sówka, H Purzyńska, M Sroka, T Puszczało, A Zieliński, Mechanical Properties of P92 Welded Joint after 3000 Hours of Annealing at 600 and 650° C, Archives of Metallurgy and Materials vol. 69 issue 2 (2024) 705-709.

DOI: 10.24425/amm.2024.149800

[7] Kwiecinski K., Urzynicok M.: Fabrication experience of new high oxidation material – THOR 115. Proceedings from: EPRI`s Conference on Advances in Materials Technology. ASM International. 2019.

DOI: 10.31399/asm.cp.am-epri-2019p0060

[8] Urzynicok M., Kwiecinski K., Slania J., Szubryt M., Mariani P.: Comparison of SMAW and GMAW Methods used in P92 Butt Welds. 1st Australasian International Welding, Inspection and NDT (iWIN2013) Conference, 10-13 March 2013, Perth, Australia

DOI: 10.31399/asm.cp.am-epri-2013p1232

[9] Kwieciński K., Urzynicok M., Słania J.: Doświadczenia przy wykonywaniu połączeń doczołowych rur ze stali 7CrMoVTiB10-10. Materiały i technologie do budowy kotłów nadkrytycznych i spalarni odpadów, Katowice (2009)

[10] Zielinski A., Sroka M., Purzynska H., Novy F., Mechanical properties of Super 304H steel after long-term ageing at 650 and 700°C, Bulletin of the Polish Academy of Sciences – Technical Sciences vol. 71 Issue:2 (2024) art. no. e144612

DOI: 10.24425/bpasts.2023.144612

[11] Kwieciński K., Urzynicok M., Szubryt M.: Doświadczenia przy wykonywaniu połączeń doczołowych z najnowszej generecji stali martenzytycznej VM12-SHC. XVI Seminarium naukowo-techniczne - Badania materiałowe na potrzeby elektrowni i przemysłu energetycznego, Zakopane 22-24 czerwca (2009)