Systems design of high performance stainless steels I. Conceptual and computational design

C. E. Campbell; G. B. Olson

doi:10.1023/A:1011808225838

Systems design of high performance stainless steels I. Conceptual and computational design

C. E. Campbell^*, G. B. Olson

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

Application of a systems approach to the computational materials design led to the development of a high performance stainless steel. The systems approach highlighted the integration of processing/structure/property/performance relations with mechanistic models to achieve desired quantitative property objectives. The mechanistic models applied to the martensitic transformation behavior included the Olson-Cohen model for heterogeneous nucleation and the Ghosh-Olson solid-solution strengthening model for interfacial mobility. Strengthening theory employed modeling of the coherent M₂C precipitation in a BCC matrix, which is initially in a paraequilibrium with cementite condition. The calibration of the M₂C coherency used available small-angle neutron scattering (SANS) data to determine a composition-dependent strain energy and a composition-independent interfacial energy. Multi-component pH-potential diagrams provided an effective tool for evaluating oxide stability. Constrained equilibrium calculations correlated oxide stability to Cr enrichment in the metastable spinel film, allowing more efficient use of alloy Cr content. The composition constraints acquired from multicomponent solidification simulations improved castability. Then integration of the models, using multicomponent thermodynamic and diffusion software programs, enabled the design of a carburizable, secondary-hardening martensitic stainless steel for advanced bearing applications.

Original language	English (US)
Pages (from-to)	145-170
Number of pages	26
Journal	Journal of Computer-Aided Materials Design
Volume	7
Issue number	3
DOIs	https://doi.org/10.1023/A:1011808225838
State	Published - 2000

Funding

This research was supported by a NSF Graduate Fellowship for CEC and was conducted as part of the multi-institutional Steel Research Group program. The authors thank Dr G. Ghosh for assistance with the modeling of the martensitic transformation behavior. Pyrowear 675 was provided by Carpenter Technology. Alloy 1605-8A was produced by NKK Corporation, Japan.

Keywords

Aqueous corrosion resistance
Case/core systems
Coherent carbide precipitation
Martensitic transformation behavior
Materials design
Microsegregation

ASJC Scopus subject areas

General Materials Science
Computer Science Applications
Computational Theory and Mathematics

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abstract = "Application of a systems approach to the computational materials design led to the development of a high performance stainless steel. The systems approach highlighted the integration of processing/structure/property/performance relations with mechanistic models to achieve desired quantitative property objectives. The mechanistic models applied to the martensitic transformation behavior included the Olson-Cohen model for heterogeneous nucleation and the Ghosh-Olson solid-solution strengthening model for interfacial mobility. Strengthening theory employed modeling of the coherent M2C precipitation in a BCC matrix, which is initially in a paraequilibrium with cementite condition. The calibration of the M2C coherency used available small-angle neutron scattering (SANS) data to determine a composition-dependent strain energy and a composition-independent interfacial energy. Multi-component pH-potential diagrams provided an effective tool for evaluating oxide stability. Constrained equilibrium calculations correlated oxide stability to Cr enrichment in the metastable spinel film, allowing more efficient use of alloy Cr content. The composition constraints acquired from multicomponent solidification simulations improved castability. Then integration of the models, using multicomponent thermodynamic and diffusion software programs, enabled the design of a carburizable, secondary-hardening martensitic stainless steel for advanced bearing applications.",

keywords = "Aqueous corrosion resistance, Case/core systems, Coherent carbide precipitation, Martensitic transformation behavior, Materials design, Microsegregation",

author = "Campbell, {C. E.} and Olson, {G. B.}",

note = "Funding Information: This research was supported by a NSF Graduate Fellowship for CEC and was conducted as part of the multi-institutional Steel Research Group program. The authors thank Dr G. Ghosh for assistance with the modeling of the martensitic transformation behavior. Pyrowear 675 was provided by Carpenter Technology. Alloy 1605-8A was produced by NKK Corporation, Japan.",

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AB - Application of a systems approach to the computational materials design led to the development of a high performance stainless steel. The systems approach highlighted the integration of processing/structure/property/performance relations with mechanistic models to achieve desired quantitative property objectives. The mechanistic models applied to the martensitic transformation behavior included the Olson-Cohen model for heterogeneous nucleation and the Ghosh-Olson solid-solution strengthening model for interfacial mobility. Strengthening theory employed modeling of the coherent M2C precipitation in a BCC matrix, which is initially in a paraequilibrium with cementite condition. The calibration of the M2C coherency used available small-angle neutron scattering (SANS) data to determine a composition-dependent strain energy and a composition-independent interfacial energy. Multi-component pH-potential diagrams provided an effective tool for evaluating oxide stability. Constrained equilibrium calculations correlated oxide stability to Cr enrichment in the metastable spinel film, allowing more efficient use of alloy Cr content. The composition constraints acquired from multicomponent solidification simulations improved castability. Then integration of the models, using multicomponent thermodynamic and diffusion software programs, enabled the design of a carburizable, secondary-hardening martensitic stainless steel for advanced bearing applications.

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Systems design of high performance stainless steels I. Conceptual and computational design

Abstract

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Keywords

ASJC Scopus subject areas

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