Skip to main content

Advertisement

SpringerLink
Log in

Effects of post-weld heat treatment on mechanical properties and microstructure of resistance spot–welded lightweight steel

  • ORIGINAL ARTICLE
  • Published:
The International Journal of Advanced Manufacturing Technology Aims and scope Submit manuscript

Abstract

To improve the mechanical properties of resistance spot–welded 780-MPa-grade lightweight steel, post-weld heat treatment (PWHT) through the application of a second welding current and using a furnace was performed after resistance spot welding. It was not possible to obtain satisfactory mechanical properties of the weld through the application of a second welding current. In the case of the PWHT by a furnace, the required loads were satisfied when PWHT was applied at temperatures of less than 300 °C for more than 30 min, and at more than 300 °C for 15 min or more. Due to the softening of martensite by PWHT, the resistance to fracture progression during tensile test was increased, and mechanical properties could be improved.

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
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17

Similar content being viewed by others

References

  1. Seo C-H, Kwon KH, Choi K, Kim K-H, Kwak JH, Lee S, Kim NJ (2012) Deformation behavior of ferrite–austenite duplex lightweight Fe–Mn–Al–C steel. Scr Mater 66(8):519–522

    Article  Google Scholar 

  2. Park SJ, Hwang B, Lee KH, Lee TH, Suh DW, Han HN (2013) Microstructure and tensile behavior of duplex low-density steel containing 5mass% aluminum. Scr Mater 68(6):365–369

    Article  Google Scholar 

  3. Zhang M, Cao W, Dong H, Zhu J (2016) Element partitioning effect on microstructure and mechanical property of the micro-laminated Fe–Mn–Al–C dual phase steel. Mater Sci Eng A 654:193–202

    Article  Google Scholar 

  4. Zhang M, Li L, Ding J, Wu Q, Wang Y-D, Almer J, Guo F, Ren Y (2017) Temperature-dependent micromechanical behavior of medium-Mn transformation-induced-plasticity steel studied by in situ synchrotron X-ray diffraction. Acta Mater 141:294–303

    Article  Google Scholar 

  5. Frommeyer G, Brüx U (2006) Microstructures and mechanical properties of high-strength Fe-Mn-Al-C light-weight TRIPLEX steels. Steel Res Int 77(9-10):627–633

    Article  Google Scholar 

  6. Khan M, Kuntz M, Su P, Gerlich A, North T, Zhou Y (2007) Resistance and friction stir spot welding of DP600: a comparative study. Sci Technol Weld Join 12(2):175–182

    Article  Google Scholar 

  7. Nikoosohbat F, Kheirandish S, Goodarzi M, Pouranvari M, Marashi S (2010) Microstructure and failure behaviour of resistance spot welded DP980 dual phase steel. Mater Sci Technol 26(6):738–744

    Article  Google Scholar 

  8. Jung G, Lee K, Lee J, Bhadeshia H, Suh D (2012) Spot weldability of TRIP assisted steels with high carbon and aluminium contents. Sci Technol Weld Join 17(2):92–98

    Article  Google Scholar 

  9. Nayak S, Hernandez VB, Okita Y, Zhou Y (2012) Microstructure–hardness relationship in the fusion zone of TRIP steel welds. Mater Sci Eng A 551:73–81

    Article  Google Scholar 

  10. Saha D, Cho Y, Park Y (2013) Metallographic and fracture characteristics of resistance spot welded TWIP steels. Sci Technol Weld Join 18(8):711–720

    Article  Google Scholar 

  11. Emre HE, Kaçar R (2016) Development of weld lobe for resistance spot-welded TRIP800 steel and evaluation of fracture mode of its weldment. Int J Adv Manuf Technol 83(9-12):1737–1747

    Article  Google Scholar 

  12. Zhao D, Wang Y, Liang D, Zhang P (2017) An investigation into weld defects of spot-welded dual-phase steel. Int J Adv Manuf Technol 92(5-8):3043–3050

    Article  Google Scholar 

  13. Liang J, Zhang H, Qiu X, Shi Y (2015) Characteristics of the resistance spot welding joints in dissimilar thickness dual-phase steels. ISIJ Int 55(9):2002–2007

    Article  Google Scholar 

  14. Hwang I, Kim D, Kang M, Kwak J-H, Kim Y-M (2017) Resistance spot weldability of lightweight steel with a high Al content. Met Mater Int 23(2):341–349

    Article  Google Scholar 

  15. Duan R, Luo Z, Li Y, Zhang Y, Liu Z (2015) Novel postweld heat treatment method for improving mechanical properties of resistance spot weld. Sci Technol Weld Join 20(2):100–105

    Article  Google Scholar 

  16. Wakabayashi C, Furusako S, Miyazaki Y (2015) Strengthening spot weld joint by autotempering acceleration at heat affected zone. Sci Technol Weld Join 20(6):468–472

    Article  Google Scholar 

  17. Sajjadi-Nikoo S, Pouranvari M, Abedi A, Ghaderi A (2018) In situ postweld heat treatment of transformation induced plasticity steel resistance spot welds. Sci Technol Weld Join 23(1):71–78

    Article  Google Scholar 

  18. Wang B, Hua L, Wang X, Li J (2016) Effects of multi-pulse tempering on resistance spot welding of DP590 steel. Int J Adv Manuf Technol 86(9-12):2927–2935

    Article  Google Scholar 

  19. Jung GS (2011) Spot weldability of TRIP steel with high carbon, high aluminium content. Dissertation, Pohang University of Science and Technology

  20. Kang M, Kim Y-M, Han HN, Kim C (2017) Effects of phase evolution on mechanical properties of laser-welded ferritic Fe-Al-Mn-C steel. Metals 7:523-1–523-13

    Google Scholar 

  21. Yi HL, Hou ZY, Xu YB, Wu D, Wang GD (2012) Acceleration of spheroidization in eutectoid steels by the addition of aluminum. Scr Mater 67(7-8):645–648

    Article  Google Scholar 

  22. Wang BQ, Song XY, Peng HF (2007) Design of a spheroidization processing for ultrahigh carbon steels containing Al. Mater Des 28(2):562–568

    Article  Google Scholar 

  23. Hu F, Wu K, Hou T, Shirazdi AA (2014) Effect of tempering temperature on the microstructure and hardness of a super-bainitic steel containing Co and Al. ISIJ Int 54(4):926–931

    Article  Google Scholar 

  24. Tumuluru M (2010) Effects of baking on the structure and properties of resistance spot welds in 780 MPa dual-phase and TRIP steels. Weld J 89(5):91–100

    Google Scholar 

  25. Saha DC, Biro E, Gerlich AP, Zhou NY (2016) Fusion zone microstructure evolution of fiber laser welded press-hardened steels. Scr Mater 121:18–22

    Article  Google Scholar 

Download references

Acknowledgments

This research was funded by the Technology Innovation Industrial Program funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea) (Development of Car Body Modularization Technology using Advanced Cold Forming and Welding Technologies of Low Density GIGA Grade Light Steel Sheets).

Author information

Authors and Affiliations

  1. Joining R&D Group, Korea Institute of Industrial Technology, Incheon, 21999, Republic of Korea

    Insung Hwang, Heewon Cho, Sangwoo Nam, Munjin Kang & Young-Min Kim

  2. School of Mechanical Design Engineering, Hanyang University, Seoul, 04763, Republic of Korea

    Heewon Cho

  3. Department of Materials Science & Engineering, Seoul National University, Seoul, 08826, Republic of Korea

    Sangwoo Nam

  4. Technical Research Laboratories Gwangyang Research Lab., Sheet Products & Process Research Group, POSCO, Gwangyang, 57807, Republic of Korea

    Min-Seo Koo

Authors
  1. Insung Hwang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Heewon Cho
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Sangwoo Nam
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Munjin Kang
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Min-Seo Koo
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Young-Min Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Young-Min Kim.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hwang, I., Cho, H., Nam, S. et al. Effects of post-weld heat treatment on mechanical properties and microstructure of resistance spot–welded lightweight steel. Int J Adv Manuf Technol 104, 4813–4825 (2019). https://doi.org/10.1007/s00170-019-04366-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00170-019-04366-x

Keywords

Search

Navigation