Skip to main content
SpringerLink
Log in

Effect of heat input and M-A constituent on microstructure evolution and mechanical properties of heat affected zone in low carbon steel

  • Metallic Materials
  • Published:
Journal of Wuhan University of Technology-Mater. Sci. Ed. Aims and scope Submit manuscript

Abstract

Microstructure evolution and impact toughness of simulated heat affected zone (HAZ) in low carbon steel have been investigated in this study. Thermal simulator was used to simulate microstructure evolution in HAZ with heat input of 10 – 100 kJ / cm welding thermal cycle. Results indicated that microstructure of HAZ mainly consisted of acicular ferrite (AF) inside grain and high volume fraction of grain boundaries ferrite (GBF) at prior austenite boundaries; the size of GBF and effective grain size increased with increasing heat input. Excellent impact toughness (more than 150 J at −40 °C) was obtained in HAZ with heat input less than 50 kJ / cm. When heat input was 100 kJ / cm, the impact toughness of HAZ decreased to 18 J because of the presence of large M-A constituent with lath-form in HAZ, assisting the micro-crack initiation and decreasing the crack initiation energy seriously. Effect of inclusions on acicular ferrite transformation in HAZ was also discussed.

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

Similar content being viewed by others

References

  1. Shim J H, Cho Y W, Chung S H, et al. Nucleation of Intragranular Ferrite at Ti2O3 Particle in Low Carbon Steel[J]. Acta. Mater., 1999, 47: 2751–2760

    Article  Google Scholar 

  2. Guo A M, Li S R, Guo J, et al. Effect of Zirconium Addition on the Impact Toughness of the Heat Affected Zone in a High Strength Low Alloy Pipeline Steel[J]. Mater. Charact., 2008, 59: 134–139

    Article  Google Scholar 

  3. Lee J L, Pan Y T. The Formation of Intragranular Acicular Ferrite in Simulated Heat Affected Zone[J]. ISIJ. Int., 1995, 35: 1027–1033

    Article  Google Scholar 

  4. Shi M H, Zhang P Y, Wang C, et al. Effect of High Heat Input on Toughness and Microstructure of Coarse Grain Heat Affected Zone in Zr bearing Low Carbon Steel[J]. ISIJ. Int., 2014, 54: 932–937

    Article  Google Scholar 

  5. Lan L Y, Qiu C L, Zhao D W, et al. Microstructural Characteristics and Toughness of the Simulated Coarse Grained Heat Affected Zone of High Strength Low Carbon Bainitic Steel[J]. Mater. SciEng. A, 2011, 529: 192–200

    Article  Google Scholar 

  6. Akselsen O M, Grong O, Solberg J K, et al. Structure-Property Relationships in Intercritical Heat Affected Zone of Low-Carbon Microalloyed Steels[J]. Mater. Sci. Tech., 1987, 3: 649–655

    Article  Google Scholar 

  7. Lee S, Chun B, Kwon D, et al. Correlation of Microstructure and Fracture Properties in Weld Heat-Affected Zones of Thermomechanically Controlled Processed Steels[J]. Metall. Trans. A, 1992, 23: 2803–2816

    Article  Google Scholar 

  8. Davis C L, King J E. Cleavage Initiation in the Intercritically Reheated Coarse-Grained Heat-Affected Zone: Part I. Fractographic Evidence[J]. Metall. Trans. A, 1994, 25: 563–573

    Article  Google Scholar 

  9. Rykalin N. Calculation of Heat Processes in Welding[C]. Mashgiz, Moscow, USSR, 1960

    Google Scholar 

  10. A F G, Flower H M, Lindley T C. Electron Backscattering Diffraction Study of Acicular Ferrite, Bainite, and Martensite Steel Microstructures [J]. Mater. Sci. and Tech., 2000, 16: 26–40

    Article  Google Scholar 

  11. Lambert-Perlade A, Gourgues A F, Pineau A. Austenite to Bainite Phase Transformation in the Heat-Affected Zone of a High Strength Low Alloy Steel [J]. Acta. Mater., 2004, 52: 2337–2348

    Article  Google Scholar 

  12. Lambert A, Garat X, Sturel T, et al. Application of Acoustic Emission to the Study of Cleavage Fracture Mechanism in a HSLA Steel[J]. Scripta. Mater., 2000, 43: 161–166

    Article  Google Scholar 

  13. Shi M H, Zhang P Y, Zhu F X. Toughness and Microstructure of Coarse Grain Heat Affected Zone with High Heat Input Welding in Zrbearing Low Carbon Steel[J]. ISIJ. Int., 2014, 54: 188–192

    Article  Google Scholar 

  14. Bramfitt B L. The Effect of Carbide and Nitride Additions on the Heterogeneous Nucleation Behavior of Liquid Iron[J]. Metall. Trans., 1970, 1: 1987–1995

    Article  Google Scholar 

  15. Mabuchi H, Uemori R, Fujioka M. The Role of Mn Depletion in Intra-Granular Ferrite Transformation in the Heat Affected Zone of Welded Joints with Large Heat Input in Structural Steels[J]. ISIJ. Int., 1996, 36: 1406–1412

    Article  Google Scholar 

  16. Gregg J M, Bhadeshia H K D H. Solid-State Nucleation of Acicular Ferrite on Minerals Added to Molten Steel[J]. Acta. Mater., 1997, 45: 739–748

    Article  Google Scholar 

  17. Curry D A, Knott J F. Effect of Microstructure on Cleavage Fracture Toughness of Quenched and Tempered Steels[J]. Mater. Sci. Tech., 1979, 13: 341–345

    Google Scholar 

  18. Filho W W B, Carvalho A L M, Bowen P. Micromechanisms of Cleavage Fracture Initiation from Inclusions in Ferritic Welds: Part I. Quantification of Local Fracture Behaviour Observed in Notched Testpieces[J]. Mater. SciEng. A, 2007, 460–461: 436–452

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, China

    Zhuangfei Wang  (王壮飞), Shuai Tang & Guodong Wang

  2. School of Material Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China

    Minghao Shi  (石明浩)

Authors
  1. Zhuangfei Wang  (王壮飞)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Minghao Shi  (石明浩)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Shuai Tang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Guodong Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Minghao Shi  (石明浩).

Additional information

Funded by Doctoral Scientific Research Foundation of Liao Ning Province (No. 201601167)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, Z., Shi, M., Tang, S. et al. Effect of heat input and M-A constituent on microstructure evolution and mechanical properties of heat affected zone in low carbon steel. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 32, 1163–1170 (2017). https://doi.org/10.1007/s11595-017-1726-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11595-017-1726-3

Key words

Search

Navigation