The Paton Welding Journal, 2002, №06

2002 №06 (02)

2002 №06 (04)

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The Paton Welding Journal, 2002, #6, 13-18 pages

Welded joints of austenitic steel 25Cr-20Ni-2Si in augmented turbopiston engines

N.I. Pinchuk¹, N.K. Ryazantsev², I.L. Rovensky²

¹E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²Kharkiv Engine Design Bureau, Kharkiv, Ukraine

Abstract
Experimental data are given on prevention of hot cracks in dissimilar welded joints of high-silicon 25Cr-20Ni-2Si steel with 10Kh18N10T steel and KhN65MTYu nickel alloy. It is shown that alloying of weld metal with boron in the amount of 0.45-0.80 % improves the technological strength of welds
Keywords: austenitic weld, hot cracks, microstructure, second primary phase, welded joints

References

1. Ryazantsev, N.K., Rovensky, I.L., Pinchuk, N.I. et al. (1998) Experience of development and prospects of application of gas turbine welded rotors of turbopiston engines from heat-resistant nickel alloys. In: Abstr. of pap. of Int. Conf, on Welding and Related Technologies for XXI Century, Kyiv, Nov. 1998. Kyiv: PWI.
2. Rovensky, I.L., Pinchuk, N.I., Yushchenko, K.A. (2001) Development of all-welded high-temperature rotor of a turbine for augmented turbopiston engines. Dvigatelestroenie, 3, 11-13.
3. Medovar, B.I. (1966) Welding of heat-resistant austenitic steels and alloys. Moscow: Mashinostroenie.
4. Schmidtman, E., Eckell, W. (1983) An investigation into the tendency to hot cracking when XIONiCrAlTi 32 20 material is manual arc welded using electrodes of the X15NiCrNb 32 31 type of varying composition. Welding and Cutting, 6, 92-94.
5. Medovar, B.I., Pinchuk, N.I., Chekotilo, L.V. (1971) Austenitic-boride steels and alloys for welded structures. Kviv: Naukova Dumka.
6. Medovar, B.I., Pinchuk, N.I., Chekotilo, L.V. (1963) On increase of maximum allowable concentrations of phosphorus and silicon in stable austenitic welds. Doklady AN SSSR, 150, 541-543.
7. Zimina, L.N. (1977) Weldable heat-resistant nickel alloys and principles of their alloying. MiTOM, 11, 2-7.
8. Yushchenko, K.A., Zakharov, L.S., Pinchuk, N.I. et al. Welding electrode. USSR author’s cert. 942336, Int. Cl. В 23 К 35, 365.
9. Yushchenko К.A., Zakharov, L.S., Pinchuk, N.I. et al. Schweielektrode. Pat. 230190 DDR, В 23 К 35/365. Publ. 27.11.85.
10. Pinchuk, N.I., Yushchenko, K.A., Matveev, V.A. et al. (1989) Repair welding of turbine vanes of gascompressor units. In: Abstr. of pap. of 1st All-Union Symp. on New Heat-Resistant and High-Temperature Materials, Moscow, May 1989. Moscow: Chermetinformatsiya.
11. Matveev, V.A., Shamarin, S.A., Genrikhov, E.F. et al. (1985) Problems of restoration of vanes from Ilastelloy-X alloy with domestic welding consumables. In: Abstr. of pap. of 2nd AllUnion Conf, on Problems of Welding Technology of Thermally Stable, High-Temperature and Heat-Resistant High-Alloy Steels and Alloys, Nikolaev, Sept. 1985. Kyiv: PWI.
12. Walser, B., Sondereger, B., Geiger, T. (1985) Gangzeitversprodung von hitzbestandigem Cr-Ni-Stahlblech und Schweigut durch Sigma-Phase. Archie Eisenh'uttenwesen, 10, 519-523.
13. Pinchuk, N.I., Khorunov, V.F., Zakharov, L.S. et al. (1998) Welding repair of cast and service defects on blades of gas turbines from high-resistant nickel alloys. In: Abstr. of pap. of Int. Conf, on Welding and Related Technologies for XXI Century, Kyiv, Nov. 1998. Kyiv: PWI.

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Suggested Citation

N.I. Pinchuk, N.K. Ryazantsev, I.L. Rovensky (2002) Welded joints of austenitic steel 25Cr-20Ni-2Si in augmented turbopiston engines. The Paton Welding J., 06, 13-18.

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