Startseite Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels

  • Qingwei Bai , Yonglin Ma , Xiaolan Kang , Shuqing Xing und Zhongyi Chen
Veröffentlicht/Copyright: 31. Januar 2017
Veröffentlichen auch Sie bei De Gruyter Brill
Informationen für Autor*innen
International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 108 Heft 2

Abstract

SA508Gr4 is a newly developed high-strength steel for nuclear reactor pressure vessels. Its welding characteristics remain largely unexplored. In this work, the simulated heat affected zone continuous cooling transformation (SH-CCT) diagram of SA508Gr4 steel was constructed and the high-temperature cooling phase compositions and the properties of the heat affected zone (HAZ) were characterized using dilatometry and microscopic tests. The results show that the phase transformation in the HAZ was divided into bainite and martensite transformation stages. When 4.6 ≤ t8/5 (the HAZ cooling time from 800 °C to 500 °C) ≤ 15 s, lath-shaped martensite was fully developed, resulting in extensive hardening and cold cracking in the HAZ, while the cooling time required to form the bainite completely exceeds 1 200 s. Thus, to improve weld quality, preheating to 196 °C or higher is recommended.

Keywords: SA508Gr4 steel; Microstructures; Simulated HAZ continuous cooling transformation diagram; Weldability
*Correspondence address, Prof. Yonglin Ma, School of Material and Metallurgy, Inner Mongolia University of Science & Technology, No. 7 Arding Street, Baotou, ZIP: 014010, P. R. China, Tel.: +8615947629690, E-mail:

References

[1] R.G.Faulkner, S.Song, P.E.J.Flewitt, M.Victoria, P.Marmy: J. Nucl. Mater.255 (1998) 189. 10.1016/S0022-3115(98)00022-1Suche in Google Scholar

[2] I.A.Vatter, C.A.Hippsley, S.G.Druce: Int. J. Press. Vessels Pip.54 (1993) 31. 10.1016/0308-0161(78)90023-6Suche in Google Scholar

[3] A.Dhooge, R.E.Dolby, J.Sebille, R.Steinmetz, A.G.Vinckier: Int. J. Press. Vessels Pip.329 (1978) 329. 10.1016/0308-0161(93)90126-ESuche in Google Scholar

[4] S.Zheng, Q.Wu, Q.Huang, S.Liu, Y.Han: Fusion Eng. Des.86 (2011) 2616. 10.1016/j.fusengdes.2011.02.072Suche in Google Scholar

[5] K.H.Lee, M.C.Kim, B.S.Lee, D.M.Wee: Mater. Sci. Eng. A-Struct.527 (2010) 3329. 10.1016/j.msea.2010.02.063Suche in Google Scholar

[6] Q.Bai, Y.Ma, S.Xing, Z.Chen: Heat Treat. Met.40 (2015) 63.Suche in Google Scholar

[7] The American Society of Mechanical Engineers: ASME Boiler and Pressure Vessel Committee, Subcommittee on Nuclear Power, New York, USA (2007).Suche in Google Scholar

[8] K.H.Lee, M.C.Kim, B.S.Lee, D.M.Wee: J. Nucl. Mater.403 (2010) 68. 10.1016/j.jnucmat.2010.05.029Suche in Google Scholar

[9] Ministry of Metallurgical Industry of the PRC: Vol. YB/T 5128-1993. Standards Press of China, Beijing, China (1993).Suche in Google Scholar

[10] J.Wang, K.Fu, Y.Ji, D.Lv: Angang Technology379 (2013) 32.Suche in Google Scholar

[11] A.Stormvinter, G.Miyamoto, T.Furuhara, P.Hedström, A.Borgenstam: Acta Mater.60 (2012) 7265. 10.1016/j.actamat.2012.09.046Suche in Google Scholar

[12] Q.Gao, J.Liu, Y.Liu, X.Di, B.Ning: Heat Treat. Met.37 (2012) 20.Suche in Google Scholar

[13] Z.X.Cui, Y.C.Tan: Physical Metallurgy and Heat Treatment, China Machine Press, Beijing (2007).Suche in Google Scholar

[14] E.Bayraktar, D.Kaplan: J. Mater. Process. Technol.87 (2004) 153. 10.1016/j.jmatprotec.2004.04.021Suche in Google Scholar

[15] D.Lv: Welding & Joining10 (1991) 10.Suche in Google Scholar

[16] H.K.Sung, Y.S.Sang, B.Hwang, G.L.Chang, N.J.Kim, S.Lee: Mater. Sci. Eng. A-Struct.530 (2011) 530. 10.1016/j.msea.2011.10.015Suche in Google Scholar

[17] S.Kou: Welding Metallurgy (2nd Ed.), John Wiley & Sons, Inc., New Jersey, USA (2003).Suche in Google Scholar

[18] Y.Li: Welding Metallurgy, China Machine Press, Beijing (2007).Suche in Google Scholar

Received: 2016-10-12
Accepted: 2016-12-01
Published Online: 2017-01-31
Published in Print: 2017-02-10

© 2017, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR
  5. Original Contributions
  6. Structural anisotropy in equal-channel angular extruded nickel revealed by dilatometric study of excess volume
  7. Low-temperature transformation to bainite in a medium-carbon steel
  8. Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels
  9. Phase precipitation in transition metal-containing 354-type alloys
  10. Effect of laser alloying on heat-treated light alloys
  11. In-situ synthesis, microstructure and properties of Ti2AlN/TiB2 composite
  12. Characterization of mechanical properties of Al/TiCP MMC
  13. Performance evaluation of polysulfone/graphene nanocomposites
  14. Short Communications
  15. Influence of Cu and Mg addition on age-related deterioration in strength and creep behavior of Zn-12Al die casting alloys
  16. Effects of mixing speed of a composite on its friction coefficient and wear resistance
  17. DGM News
  18. DGM News
https://doi.org/10.3139/146.111462
Schlagwörter für diesen Artikel
SA508Gr4 steel; Microstructures; Simulated HAZ continuous cooling transformation diagram; Weldability

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR
  5. Original Contributions
  6. Structural anisotropy in equal-channel angular extruded nickel revealed by dilatometric study of excess volume
  7. Low-temperature transformation to bainite in a medium-carbon steel
  8. Study on the welding continuous cooling transformation and weldability of SA508Gr4 steel for nuclear pressure vessels
  9. Phase precipitation in transition metal-containing 354-type alloys
  10. Effect of laser alloying on heat-treated light alloys
  11. In-situ synthesis, microstructure and properties of Ti2AlN/TiB2 composite
  12. Characterization of mechanical properties of Al/TiCP MMC
  13. Performance evaluation of polysulfone/graphene nanocomposites
  14. Short Communications
  15. Influence of Cu and Mg addition on age-related deterioration in strength and creep behavior of Zn-12Al die casting alloys
  16. Effects of mixing speed of a composite on its friction coefficient and wear resistance
  17. DGM News
  18. DGM News
Jetzt anmelden und 20% sparen
Institutioneller Zugang
Wie funktioniert Authentifizierung?
Haben Sie eine Idee, wie wir unsere Website verbessern können?
Bitte schreiben Sie uns.
© 2025 De Gruyter Brill
Heruntergeladen am 16.11.2025 von https://www.degruyterbrill.com/document/doi/10.3139/146.111462/pdf
Button zum nach oben scrollen