Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - A new ultrahigh-strength stainless steel strengthened by various coexisting nanoprecipitates
AU - Xu, W.
AU - Rivera-Díaz-Del-Castillo, P. E.J.
AU - Yan, W.
AU - Yang, K.
AU - San Martín, D.
AU - Kestens, L. A.I.
AU - Van Der Zwaag, S.
PY - 2010/6
Y1 - 2010/6
N2 - 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.
AB - 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.
KW - Alloy design
KW - Maraging steels
KW - Precipitation
KW - Stainless steels
KW - Thermodynamics
U2 - 10.1016/j.actamat.2010.03.005
DO - 10.1016/j.actamat.2010.03.005
M3 - Journal article
AN - SCOPUS:79960626940
VL - 58
SP - 4067
EP - 4075
JO - Acta Materialia
JF - Acta Materialia
SN - 1359-6454
IS - 11
ER -