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

W. Sha; G. D.W. Smith; A. Cerezo

doi:10.1016/0039-6028(92)91049-H

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

School of Natural and Built Environment

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	378-384
Number of pages	7
Journal	Surface Science
Volume	266
Issue number	1-3
DOIs	https://doi.org/10.1016/0039-6028(92)91049-H
Publication status	Published - 15 Apr 1992

ASJC Scopus subject areas

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

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title = "Atom probe field-ion microscopy study of ageing behaviour of a model FeNiCoMo maraging steel",

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.",

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AU - Sha, W.

AU - Smith, G. D.W.

AU - Cerezo, A.

PY - 1992/4/15

Y1 - 1992/4/15

N2 - 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.

AB - 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.

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