Aging response and strength formability parameters of hot rolled copper alloyed interstitial free steel

R. Rana*, W. Bleck, S. B. Singh, O. N. Mohanty

*Corresponding author for this work

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Abstract

Laboratory investigations have been carried out on a copper alloyed Interstitial free steel to develop a high strength steel for automotive applications in hot rolled conditions. The aging characteristics for a wide range of temperature and time have been documented and discussed in terms of diffusivity and solubility of copper in α iron. Coiling temperature, in general, influences the strength formability parameters of the hot rolled steel owing to its effect on copper precipitation. A high strength hot rolled steel for automotives with high strain hardening rate can be developed by adopting low temperature coiling at 550°C, without using any additional step in the normal processing schedule of interstitial free steels. Deep drawability or the Lankford parameter appears not to be influenced much by the coiling temperature.

Original languageEnglish
Pages (from-to)561-566
Number of pages6
JournalMaterials Science and Technology
Volume23
Issue number5
DOIs
Publication statusPublished - May 2007

Keywords

  • Coiling temperature
  • Copper alloyed interstitial free steel
  • Copper precipitation
  • Strain hardening
  • Strength formability parameters

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