Surfacing 24Cr-5Ni-2.5Mo Duplex Steel Castings by TIG

• Autorzy: Kasinska J. , Skrzypczyk A. , Kalandyk B.

Identyfikatory

DOI

10.24425/122495

• Języki publikacji: EN

Abstrakty

EN

This article discusses the influence of Tungsten Inert Gas (TIG) surfacing of duplex cast steel on its hardness and structure. The samples of 24Cr-5Ni-2.5Mo ferritic-austenitic cast steel were subjected to single-overlay processes with the use of solid wire having the chemical composition similar to that of the duplex cast steel. As a result of the surfacing, the welds were obtained that had no welding imperfections with a smooth transition to the base material. In the test without the heat treatment, directly below the fusion line, we observe a ferrite band with a width of approximately 200 μm without visible austenite areas. Some of the samples were then solution treated (1060°C). Both variants, without and after solution heat treatment, were subjected to testing. Significant changes in the microstructure of the joint were observed after the heat treatment process (heat affected zone and weld microstructure changes). In both areas, an increase in the austenite volume fraction after solution heat treatment was observed. Changes in the microhardness of the ferrite in the HAZ area directly below the fusion line were also observed.

Słowa kluczowe

EN

duplex cast steel; surfacing; Tungsten Inert Gas method; solution heat treatment; microstructure change

PL

staliwo duplex; proces napawania; metoda TIG; obróbka cieplna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 15--20
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Kasinska J.

• Kielce University Technology, Faculty of Mechatronics and Mechanical Engineering, Departament of Metal Science and Manufacturing Processes, al. Tysiąclecia P.P.7, 25-314 Kielce, Poland

autor

Skrzypczyk A.

• Kielce University Technology, Faculty of Mechatronics and Mechanical Engineering, Departament of Metal Science and Manufacturing Processes, al. Tysiąclecia P.P.7, 25-314 Kielce, Poland

autor

Kalandyk B.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, 30-059 Krakow, 23 Reymonta Str., Poland

Bibliografia

• [1] Charles, J. (1995). Composition and properties of duplex stainless steels. Welding in the World/Le Soudage dans le Mond. 36, 43-54.
• [2] Stradomski, Z., Stachura, S., Dyja, D. & Zyska, A. (2005). Technological problems in elaboration of massive casting from duplex cast steel in aspect of productive process, Archiwum Odlewnictwa. 5(17), 287-292.
• [3] Bartocha, D. (2014). Two-Phase Cast Steel Production with Regenerative Method. Archives of Foundry Engineering. 14(spec.3), 3-8.
• [4] Hofmann, E. & Santos, R. (2004). Steureng der Erstarrungsmorphologie austenitisch - ferritischer Superduplex-Stahle. Giesserei. 1, 18-28.
• [5] Avesta Polarit Welding – Katalog (2002).
• [6] Messner, C., Silberschmidt, V.V. & Werner, E.A. (2003). Thermally induced surface roughness in austenitic-ferritic duplex stainless steels. Acta Materialia. 51(6), 1525-1537.
• [7] Kalandyk, B. (2011). Characteristics of microstructure and properties of castings made from ferritic-austenitic steel. Archives of Foundry Engineering. Katowice-Gliwice (in Polish).
• [8] Nowacki, J. (2009). Duplex steel and its weldability. Warszawa: WNT. (in Polish).
• [9] Karlsson, L. (2012). Welding of duplex stainless steels - a review of current recommendation. Biuletyn Instytutu Spawalnictwa. 5, 48-60.
• [10] Żuk, M. (2015). Repair duplex steel castings GX2CrNiMoCu25-6-3-3 MAG cored wire. Przegląd spawalnictwa. 5, 9-14.
• [11] Meka, K. (2000). Influence of nitrogen upon the shape and quality of padding welds applied by the GMA method. Przegląd Spawalnictwa. 12, 7-11.
• [12] Meka, K. (2003). Mechanical properties of duplex steel connections. Przegląd Spawalnictwa. 11, 7-10. (in Polish).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).