Effect of electric current density on the mechanical property of advanced high strength steels under quasi-static tensile loads

Min Sung Kim, Nguyen Thai Vinh, Hyeong Ho Yu, Sung Tae Hong, Hyun Woo Lee, Moon Jo Kim, Heung Nam Han, John T. Roth

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The effect of a single pulse of electric current on the mechanical property of advanced high strength steels (AHSS) under quasi-static tensile loads is investigated by experiments. During a typical quasi-static tensile test, electric current is applied to a specimen for a short duration (less than 1 second) while the specimen is in plastic region. The stress-strain curve shows that the flow stress almost instantly decreases significantly (stress-drop) when the electric current is applied, while the tensile strength from the following stress-strain curve after the short pulse of electric current is not changed much. The experimental result suggests that the stress-drop at the moment of a short pulse of electric current can be effectively used to reduce the springback of material, as successfully demonstrated in the present study.

Original languageEnglish (US)
Pages (from-to)1207-1213
Number of pages7
JournalInternational Journal of Precision Engineering and Manufacturing
Volume15
Issue number6
DOIs
StatePublished - Jun 2014

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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