A new ultrahigh-strength stainless steel strengthened by various coexisting nanoprecipitates
A new ultrahigh-strength stainless steel strengthened by various coexisting nanoprecipitates
A general computational alloy design approach based on thermodynamic and physical metallurgical principles and coupled with a genetic optimization scheme is presented. The model is applied to develop a new ultrahigh-strength maraging stainless steel. The alloy composition and heat treatment parameters are integrally optimized so as to achieve microstructures of fully lath martensite matrix strengthened by multiple precipitates of MC carbides, Cu particles and Ni3Ti intermetallics. The combined mechanical properties, corrosion resistance and identification of actual strengthening precipitates in the experimental prototype produced on the basic of the model predictions provide a strong justification for the alloy design approach.
Alloy design, Maraging steels, Precipitation, Stainless steels, Thermodynamics
4067-4075
Xu, W.
ee9701c4-ccf9-41b7-9cb9-d5a2e160b5e2
Rivera-Díaz-Del-Castillo, P.E.J.
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Yan, W.
81b9f36a-ea34-4e6c-95e6-cba212367e7a
Yang, K.
bfc5f908-cc8f-43ea-8384-10457b7d5204
San Martín, D.
3cb4e081-1f6f-4f63-a25f-30613c3288a1
Kestens, L.A.I.
a9c4eefc-2005-4b12-8700-5f49201448a1
van der Zwaag, S.
ad11f134-8a43-4635-9feb-7c3d01158f4b
Xu, W.
ee9701c4-ccf9-41b7-9cb9-d5a2e160b5e2
Rivera-Díaz-Del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Yan, W.
81b9f36a-ea34-4e6c-95e6-cba212367e7a
Yang, K.
bfc5f908-cc8f-43ea-8384-10457b7d5204
San Martín, D.
3cb4e081-1f6f-4f63-a25f-30613c3288a1
Kestens, L.A.I.
a9c4eefc-2005-4b12-8700-5f49201448a1
van der Zwaag, S.
ad11f134-8a43-4635-9feb-7c3d01158f4b
Xu, W., Rivera-Díaz-Del-Castillo, P.E.J., Yan, W., Yang, K., San Martín, D., Kestens, L.A.I. and van der Zwaag, S.
(2010)
A new ultrahigh-strength stainless steel strengthened by various coexisting nanoprecipitates.
Acta Materialia, 58 (11), .
(doi:10.1016/j.actamat.2010.03.005).
Abstract
A general computational alloy design approach based on thermodynamic and physical metallurgical principles and coupled with a genetic optimization scheme is presented. The model is applied to develop a new ultrahigh-strength maraging stainless steel. The alloy composition and heat treatment parameters are integrally optimized so as to achieve microstructures of fully lath martensite matrix strengthened by multiple precipitates of MC carbides, Cu particles and Ni3Ti intermetallics. The combined mechanical properties, corrosion resistance and identification of actual strengthening precipitates in the experimental prototype produced on the basic of the model predictions provide a strong justification for the alloy design approach.
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Accepted/In Press date: 5 March 2010
e-pub ahead of print date: 13 April 2010
Keywords:
Alloy design, Maraging steels, Precipitation, Stainless steels, Thermodynamics
Identifiers
Local EPrints ID: 492889
URI: http://eprints.soton.ac.uk/id/eprint/492889
ISSN: 1359-6454
PURE UUID: bce9ef64-9f66-4564-a6b8-443c79ca7792
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Date deposited: 19 Aug 2024 16:48
Last modified: 20 Aug 2024 02:05
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Contributors
Author:
W. Xu
Author:
P.E.J. Rivera-Díaz-Del-Castillo
Author:
W. Yan
Author:
K. Yang
Author:
D. San Martín
Author:
L.A.I. Kestens
Author:
S. van der Zwaag
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