Copper-precipitation hardening in a non-ferromagnetic face-centered cubic austenitic steel

Dieter Isheim*, Semyon Vaynman, Morris E. Fine, David N Seidman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Copper additions are utilized for precipitation hardening of a non-ferromagnetic austenitic face-centered cubic (fcc) steel. Additions of up to 25 wt.% Mn, 15 wt.% Ni, 6 wt.% Cu, and 0.6 wt.% C are found to stabilize austenite sufficiently to prevent transformation to either α′- or ε-martensite upon heavy mechanical deformation up to 75% reduction in thickness, with the alloys remaining paramagnetic. Mechanical properties are characterized and the tensile strength (447 MPa) is correlated with copper-precipitation as revealed directly by local-electrode atom-probe tomography.

Original languageEnglish (US)
Pages (from-to)1235-1238
Number of pages4
JournalScripta Materialia
Volume59
Issue number12
DOIs
StatePublished - Dec 1 2008

Keywords

  • Atom-probe tomography
  • Copper-precipitation
  • Non-ferromagnetic fcc austenitic Steels
  • Precipitation hardening

ASJC Scopus subject areas

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

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