Skip to main content
SpringerLink
Log in

The Effect of Peak Temperature on HAZ Microstructure and Toughness of V- and Nb-Bearing Microalloyed Steels

  • Technical Paper
  • Published:
Transactions of the Indian Institute of Metals Aims and scope Submit manuscript

Abstract

Welding heat cycle processes of V- and Nb-bearing microalloyed steels at different peak temperatures (1350, 1100, 950, 800 and 650 °C) were simulated by Gleeble 3500. The microstructure and toughness of two steels were investigated by optical microscopy (OM), scanning electron microscopy (SEM) and low-temperature impact toughness test (− 40 °C). The results indicated that the microstructure of both V and Nb steels consisted of the lath bainite (LB), granular bainite (GB), polygonal ferrite (PF) and a small amount of martensite austenite (MA) islands at 1350 °C, and acicular ferrite (AF) was also observed in V steel. Ferrite (F) phase became uniform, and hard phase LB decreased with the decrease in peak temperature. Impact tests indicated that both the two steels exhibited the best impact toughness (32.23 and 30.90 J) at the peak temperature of 950 °C. The impact toughness of V steel was better than of Nb steel all the time, which was consistent with the analysis of microfracture.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

References

  1. Hulka K, Kern A, and Schriever U, Mater Sci Forum 500–501 (2005) 519.

    Article  Google Scholar 

  2. Yu S F, and Qian B N, Mater Res Trans 18 (2004) 405.

    Google Scholar 

  3. Kim B C, Lee S, Kim N J, and Lee D Y, Metall Trans 22 (1991) 139.

    Article  Google Scholar 

  4. Davis C L, and King J E, Metall Trans 25 (1994) 563.

    Article  Google Scholar 

  5. Matsuda F, Ikeuchi K, Liao J, Effect of weld thermal cycles on the HAZ toughness of SQV-2A pressure vessel steel [M]. 4th International Conference on Trends in welding Research (1995).

  6. Fairchild D P, Bangaru N V, Koo J Y, Harrison P L, and Ozekcin A, Weld J 470 (1991) 321s.

  7. Tang M Y, Introduction to Welding Physics Metallurgy, Machinery Industry Press, Jing Bei, 1989.

    Google Scholar 

  8. Crowther D N, Li Y, Green M J W, Mitchell P S, and Baker T N, ISIJ Int, 41 (2001) 46.

    Article  Google Scholar 

  9. Shi Z R, Wang R Z, and Wang Q F, Kang Tieh Iron Steel, 50 (2015) 70.

    Google Scholar 

  10. Ikeuchi K, Matsuda F, and Liao J, Weld Inter 10 (1996) 552.

    Article  Google Scholar 

  11. Chen X W, Liao B, and Qiao G Y, J Iron Steel Res 20 (2013) 53.

    Article  Google Scholar 

  12. Hong Y C, Heat Treat, 17 (2002) 16.

    Google Scholar 

  13. Wang L T, Zhao R H, and Mao Y J, J. Iron Steel Res 2 (1984) 97.

    Google Scholar 

  14. Han X R, Wide Heavy Plate 12 (2006) 39.

    Google Scholar 

  15. Zhang L, and Kannengiesser T, Mater Sci Eng 613 (2014) 326.

    Article  Google Scholar 

  16. Fahlström K, Hutchinson B, and Komenda J, Iron Steel Vanadium Titanium 36 (2015) 104.

    Google Scholar 

  17. Wang Y G, li F Y, Heat Treat Met 30 (2005) 27.

    Google Scholar 

  18. Wang B, Hu Y W, and Yang X F, Met Sci J 33 (2016) 1004.

    Google Scholar 

Download references

Acknowledgements

The research work was also supported by the National Nature Science Foundation of china (No. 51602269) and The Technology Project of Nanchong and SWPU Cooperation (No. 18SXHZ0013). The research work (TIIM-D-18-00069.1, DOI: 10.1007/s12666-018-1497-3) was also supported by the key Laboratory of Oil and Gas Field Materials in Sichuan Province of China (No. X151518KCL44).

Author information

Authors and Affiliations

  1. School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China

    Bin Wang, Jing Hu & Yiwen Hu

  2. Sichuan Provincial Research Center of Welding Engineering Technology, Chengdu, 610500, China

    Bin Wang

  3. School of Petroleum and Nature Gas Engineering, Southwest Petroleum University, Chengdu, 610500, China

    L. Pu

Authors
  1. Bin Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jing Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Yiwen Hu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. L. Pu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Jing Hu.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, B., Hu, J., Hu, Y. et al. The Effect of Peak Temperature on HAZ Microstructure and Toughness of V- and Nb-Bearing Microalloyed Steels. Trans Indian Inst Met 72, 1119–1127 (2019). https://doi.org/10.1007/s12666-018-1497-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12666-018-1497-3

Keywords

Search

Navigation