Atom probe field-ion microscopy study of ageing behaviour of a model FeNiCoMo maraging steel

W. Sha*, G. D.W. Smith, A. Cerezo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

This paper reports an atom probe field-ion microscopy (APFIM) study of the ageing reactions in a model Fe18.2%Ni8.8%Co2.9% Mo (at. %) maraging steel, using both the conventional APFIM and the position-sensitive atom probe (POSAP). Two different families of intermetallic phases (ω-phase and Fe7Mo6) have been found to contribute to age-hardening. The composition and morphology of these precipitates were studied in the alloy aged at 414°C and 510°C. No evidence was found for the existence of Mo-rich clusters in the as-quenched alloy. The APFIM results are compared with studies by Servant et al. using other techniques, and previous studies on a commercial Ti-containing steel by the authors.

Original languageEnglish
Pages (from-to)378-384
Number of pages7
JournalSurface Science
Volume266
Issue number1-3
DOIs
Publication statusPublished - 15 Apr 1992

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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