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Microscopical Examination of a Super Austenitic Stainless Steel

Published online by Cambridge University Press:  02 July 2020

G. Fourlaris ,
T. Gladman  and
M. Maylin
G. Fourlaris
Affiliation:
School of Materials, The University of Leeds, Leeds, LS2 9JT, U.K.
T. Gladman
Affiliation:
School of Materials, The University of Leeds, Leeds, LS2 9JT, U.K.
M. Maylin
Affiliation:
Defence Research Agency, Holton Heath, Poole, Dorset, BH16 6JU, U.K.
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Extract

Stainless steels have significant applications due to their good corrosion resistance. However, for applications in a marine environment, i.e. for certain types of large naval structures, in addition to the good corrosion resistance, other requirements are imposed on the candidate material such as high strength and toughness coupled with suitable magnetic characteristics.

It has been demonstrated in earlier publications that significant improvements in the coercivity, maximum induction and remanence values can be achieved, by using a 2205 type Duplex austenitic -ferritic stainless steel (DSS) instead of the low alloy medium carbon steels currently being used. These improvements are achieved in the as received 2205 material, and after small amounts of cold rolling have been applied, to increase the strength. However, the 2205 type DSS exhibits “ marginal” corrosion protection in a marine environment as well as exhibiting some measurable ferromagnetic response. Therefore, a study has been undertaken to examine the mechanical properties and microstructures obtained in a super austenitic stainless steel of the 254 SMO type.

Type
Phase Transformations in Metals and Alloys
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 687 - 688
Copyright
Copyright © Microscopy Society of America 1997

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References

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