Manufacturing aspects relating to the effects of direct current on the tensile properties of metals

Carl D. Ross, David B. Irvin, John Timothy Roth

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

For metals, deformation is commonly conducted at elevated temperatures, reducing the overall process energy and cost. However, elevating the temperature has many drawbacks, including high tool/die adhesions, environmental reactivity, etc. Therefore, this study examines using an electrical current to reduce the deformation energy and presents electricity's effects on the tensile properties of various materials. The influences of strain rate and cold work are also investigated. The results demonstrate that, when current flows through a metallic specimen, the material's yield strength, flow stress, and elastic modulus are decreased; strain weakening occurs; and the total energy of deformation is decreased. These changes in the engineering stress-strain behavior occurred in all of the materials tested and are much greater than can be accounted for by resistive heating. However, the effects diminish with increasing strain rate. The analysis shows that applying electricity during deformation provides a viable alternative to increasing the workpiece temperature for deformation-based manufacturing processes.

Original languageEnglish (US)
Pages (from-to)342-347
Number of pages6
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume129
Issue number2
DOIs
StatePublished - Apr 1 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Manufacturing aspects relating to the effects of direct current on the tensile properties of metals'. Together they form a unique fingerprint.

Cite this