Skip to main content
SpringerLink
Log in

Effect of Mechanical Cut-Edges on the Fatigue and Formability Performance of Advanced High-Strength Steels

  • Technical Article---Peer-Reviewed
  • Published:
Journal of Failure Analysis and Prevention Aims and scope Submit manuscript

Abstract

Mechanical cut-edge properties influence the fatigue lives and formability capacity of advanced high-strength steels. This factor is critical as S355MC and DP600 exhibited an increased sensitivity to fatigue cracks initiating from defects on the cut-edge fracture zone. Mechanical cut-edges as a result displayed a decreased level of formability that was highly dependent on the cut-edge surface and internal microstructure of the cut-edge produced. It was determined that, by controlling the mechanical clearance, optimized mechanical cut-edges were produced. This was achieved through minimizing surface damage and by controlling the internal and topographical properties of the cut-edge zones.

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
Fig. 18
Fig. 19
Fig. 20

Similar content being viewed by others

Abbreviations

A :

Elongation to failure

AHSS:

Advanced high-strength steel

HEC:

Hole expansion capacity

HSLA:

High-strength low alloy

H V :

Vickers hardness

MPa:

Mega Pascal

R :

Stress ratio (min stress/max stress)

R a :

Arithmetic mean of departures from the mean line

R p :

Maximum height of profile above the mean line

R v :

Maximum depth of profile below the mean line

S-N:

Stress-life

Wt:

Weight

References

  1. Meurling, F., Melander, A., Linder, J., Larsson, M.: The influence of mechanical and laser cutting on the fatigue strengths of carbon and stainless sheet steels. Scand. J. Metall. 30, 309–319 (2001)

    Article  CAS  Google Scholar 

  2. Vass, A., Heijne, J.: Fatigue performance of cut edges. Corus Technical Report, Reference Source Number 134315 (2007)

  3. Van-Goethem, R.P.M., Ament, P.C.H.: Influences of some parameters on the sheet cutting process of cold and hot rolled steel. Corus Technical Report, Reference Source Number 10325 (2000)

  4. Matsumoto, Y., Hashimoto, F., Lahoti, G.: Surface integrity generated by precision hard turning. Ann. CIRP. 48(1), 50–53 (1999)

    Article  CAS  Google Scholar 

  5. Marronne, E., Labesse-Jied, F., Galtier, A., Robert, J.L.: Influence of a cut edge on steel sheets fatigue properties. In: Fatigue 2003, Angers (2003)

  6. Parsons, A.S.: The formula for successful punching. http://www.thefabricator.com/Punching/Punching_Article.cfm?ID=1415. Accessed 4 April 2007 (2006)

  7. Melander, A., Meurling, F., Linder, J.: Comparison of the fatigue characteristics of punched and laser cut stainless steel sheets. In: Fatigue design 1998, Espoo, pp. 351–372 (1998)

  8. Zelinski, P.: http://www.mmsonline.com/articles/010602.html. Accessed 20 April 2010 (2007)

  9. Zorev, N.N.: Metal Cutting Mechanics. Pergamon, Oxford (1966)

    Google Scholar 

  10. Johnson, W., Mamalis, A.G.: The perforation of circular plates with four-sided pyramidally headed square-section punches. Int. J. Mech. Sci. 20, 849–866 (1978)

    Article  Google Scholar 

  11. Wang, N.M., Wenner, M.L.: An analytical and experimental study of stretch flanging. Int. J. Mech. Sci. 16, 135–143 (1974)

    Article  Google Scholar 

  12. Kumagai, T., Saiki, H.: Deformation analysis of hole flanging with ironing of thick sheet metals. Met. Mater. 4(4), 711–714 (1999)

    Article  Google Scholar 

  13. Cho, Y.R., Chung, J.H., Ku, H.H., Kim, I.B.: Effect of controlled cooling on the formability of TS 590 MPa grade hot-rolled high strength steels. Met. Mater. 5(6), 571–578 (1999)

    Article  CAS  Google Scholar 

  14. Chitkara, N.R., Johnson, W.: Hole flanging and piercing of circular plate. Sheet Met. Ind. 51(10), 635–640 (1974)

    Google Scholar 

  15. Strijbos, G.H., Boesenkool, R.: Hole expansion in hot rolled steels. In: Proceedings of the 19th IDDRG Biennial Congress, Eger, 10–14 June 1996, pp. 459–466 (1996)

  16. Asnafi, N.: On stretch and shrink flanging of sheet aluminium by fluid forming. J. Mater. Process. Technol. 96, 198–214 (1999)

    Article  Google Scholar 

  17. Cho, Y.R., Chung, J.H., Ku, H.H., Kim, I.B.: A study on the stretch flangeability of hot-rolled high strength steel with ferrite–bainite duplex microstructures. Korean J. Mater. Res. 9(12), 1252–1262 (1999)

    CAS  Google Scholar 

  18. Keeler, S: Cutting sheet metal reduces edge formability. The Science of Forming Magazine Article. March 1999. (1999)

  19. Auto Steel Partnership Auto Steel Partnership: http://www.asp.org/database/custom/hss_stampingDesignManual.pdf. Accessed 16 May 2010 (2000)

Download references

Acknowledgments

The present research was funded by a grant from the Engineering and Physical Sciences Research Council (EPSRC). The author wishes to thank the support of Swansea University College of Engineering and the Engineering Centre for Manufacturing and Materials during the pursuit of this research.

Author information

Authors and Affiliations

  1. Materials Research Centre, College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP, UK

    Daniel J. Thomas

Authors
  1. Daniel J. Thomas
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Daniel J. Thomas.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Thomas, D.J. Effect of Mechanical Cut-Edges on the Fatigue and Formability Performance of Advanced High-Strength Steels. J Fail. Anal. and Preven. 12, 518–531 (2012). https://doi.org/10.1007/s11668-012-9591-z

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11668-012-9591-z

Keywords

Search

Navigation