Journal of Failure Analysis and Prevention

, Volume 19, Issue 3, pp 858–865 | Cite as

Cracking of Electrolytic Tough Pitch Copper Plates During Hot Rolling

  • George PantazopoulosEmail author
  • Athanasios Vazdirvanidis
  • Ioannis Contopoulos
Technical Article---Peer-Reviewed


Failure analysis is performed in electrolytic tough pitch copper plates that have been severely fractured during the initial hot rolling passes. A comprehensive investigation was conducted, including mainly macroscopic examination, fractographic and metallographic evaluation. Moreover, numerical simulation of the solidification front using a computational fluid dynamics software was also employed to analyze the influence of the variation of casting parameters on the solidification front development. Fracture areas manifested poor ductility, while in many cases a prior cast pattern consisting of coarsely solidified dendritic crystals was revealed. The obtained evidence is suggestive of microstructural embrittlement caused by the synergistic contribution of the manufacturing process conditions and the potential elemental and particle segregation, such as cuprous oxide aggregation, that might promote failure susceptibility.


Hot-rolled plates Electrolytic tough pitch copper Low-ductility fracture Solidification front 



  1. 1.
    ASM Specialty Handbook, Copper and Copper Alloys (ASM International, Materials Park, 2001)Google Scholar
  2. 2.
    G.E. Dieter, Mechanical Metallurgy, SI Metric edn. (McGraw Hill, New York, 1988)Google Scholar
  3. 3.
    G. Pantazopoulos, A. Vazdirvanidis, I. Contopoulos: “Cracking failures of copper alloy hot rolled plates: phenomenological approach and root cause analysis”, Materials Science and Technology 2018 (MS&T18), October 14–18, 2018, Greater Columbus Convention Center, Columbus, Ohio, USA, pp. 1006–1011Google Scholar
  4. 4.
    G.A. Pantazopoulos, A short review on fracture mechanisms of mechanical components operated under industrial process conditions: fractographic analysis and selected prevention strategies. Metals 9, 148 (2019). CrossRefGoogle Scholar
  5. 5.
    L. Darken, R. Gurry, Physical Chemistry of Metals (McGraw Hill, New York, 1953)Google Scholar
  6. 6.
    M.R. Louthan Jr., Hydrogen embrittlement of metals: a primer for the failure analyst. J. Fail. Anal. Prev. 8(3), 289–307 (2008)CrossRefGoogle Scholar
  7. 7.
    C. Camurri, C. Carrasco, R. Leite, R. Mangalaraja, J. Dille, Influence of impurities in cathodic copper on the ductility of copper wires. J. Mater. Eng. Perform. 21(7), 1474–1478 (2012)CrossRefGoogle Scholar
  8. 8.
    G. Pantazopoulos, A. Vazdirvanidis, D.C. Papamantellos, Metallurgical investigation on low ductility failures of Cu-ETP components. Mater. Sci. Forum 638–642, 3901–3906 (2010)CrossRefGoogle Scholar
  9. 9.
    T.G. Nieh, W.D. Nix, Embrittlement of copper due to segregation of oxygen to grain boundaries. Metall. Trans. A 12A, 893–901 (1981)CrossRefGoogle Scholar
  10. 10.
    G.A. Pantazopoulos, Failure and fracture analysis of a Zn-alloy casting. J. Fail. Anal. Prev. 17(3), 400–406 (2017)CrossRefGoogle Scholar
  11. 11.
    R. Sarkar, S. Pathak, D.H. Kela, Root cause analysis of low impact toughness of cast steel yokes used in railway freight cars. J. Fail. Anal. Prev. 19(1), 76–84 (2019)CrossRefGoogle Scholar
  12. 12.
    A. Vazdirvanidis, G. Pantazopoulos, A. Louvaris, Failure analysis of a hardened and tempered structural steel (42CrMo4) bar for automotive applications. Eng. Fail. Anal. 16, 1033–1038 (2009)CrossRefGoogle Scholar

Copyright information

© ASM International 2019

Authors and Affiliations

  1. 1.ELKEME Hellenic Research Centre for Metals S.A.Oinofyta ViotiasGreece

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