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Journal of Failure Analysis and Prevention

, Volume 8, Issue 1, pp 81–83 | Cite as

Investigation into the Cracking of Cross Members During Forming

  • Biswajit Sarkar
  • B. K. Jha
  • Ramen Datta
  • S. K. Chaudhuri
Case History—Peer-Reviewed

Abstract

An investigation into the cracking of cross members during forming from E-34 grade steel found that the cracking was a result of the presence of stringers of manganese sulfide inclusions, a high free nitrogen content, and a yield strength that was near the upper limit of the specified yield strength. A decrease in sulfur level and free nitrogen contents and a decrease in the yield strength were recommended as the measures to be taken to prevent such cracking.

Keywords

Ductile fracture Forming Inclusions Fine ferrite grains 

Notes

Acknowledgments

The authors are thankful to the management of RDCIS for the permission to carry out the work and publish the findings. The authors gratefully acknowledge the assistance received from Shri S.K. Maitra and the staff of mechanical and metallography laboratories.

References

  1. 1.
    Pearce, R.: Tests, Sheet metal forming, The Adam Hilger Series on New Manufacturing Processes and Materials, John Wood, Series Editor, IOP Publishing Limited, 245 (1991).Google Scholar
  2. 2.
    Morrison W.B., Miller R.L.: The ductility of ultrafine grain alloys, Ultrafine Grain Metals, J.J. Burke and V. Weiss, eds., Syracuse University Press, Syracuse, New York, 185 (1970).Google Scholar

Copyright information

© ASM International 2007

Authors and Affiliations

  • Biswajit Sarkar
    • 1
  • B. K. Jha
    • 1
  • Ramen Datta
    • 1
  • S. K. Chaudhuri
    • 1
  1. 1.R & D Centre for Iron and SteelSteel Authority of India Ltd.RanchiIndia

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