Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels

Mburu, Sarah; Kolli, R. Prakash; Perea, Daniel E.; Schwarm, Samuel C.; Eaton, Arielle; Liu, Jia; Patel, Shiv; Bartrand, Jonah; Ankem, Sreeramamurthy

doi:10.1016/j.msea.2017.03.011

Title: Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels

Abstract

The microstructure and mechanical properties in unaged and thermally aged (at 280 oC, 320 oC, 360 oC, and 400 oC to 4300 h) CF–3 and CF–8 cast duplex stainless steels (CDSS) are investigated. The unaged CF–8 steel has Cr-rich M23C6 carbides located at the δ–ferrite/γ– austenite heterophase interfaces that were not observed in the CF–3 steel and this corresponds to a difference in mechanical properties. Both unaged steels exhibit incipient spinodal decomposition into Fe-rich α–domains and Cr-rich α’–domains. During aging, spinodal decomposition progresses and the mean wavelength (MW) and mean amplitude (MA) of the compositional fluctuations increase as a function of aging temperature. Additionally, G–phase precipitates form between the spinodal decomposition domains in CF–3 at 360 oC and 400 oC and in CF–8 at 400 oC. The microstructural evolution is correlated to changes in mechanical properties.

Authors:: Mburu, Sarah; Kolli, R. Prakash; Perea, Daniel E.; Schwarm, Samuel C.; Eaton, Arielle; Liu, Jia; Patel, Shiv; Bartrand, Jonah; Ankem, Sreeramamurthy

Publication Date:: Sat Apr 01 00:00:00 EDT 2017

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1358491

Report Number(s):: PNNL-SA-124944
Journal ID: ISSN 0921-5093; 49647; 830403000

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

Additional Journal Information:: Journal Volume: 690; Journal ID: ISSN 0921-5093

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: spinodal decomposition; duplex stainless steel; atom probe tomography; M23C6 carbide; G–phase; Environmental Molecular Sciences Laboratory

Citation Formats


                    Mburu, Sarah, Kolli, R. Prakash, Perea, Daniel E., Schwarm, Samuel C., Eaton, Arielle, Liu, Jia, Patel, Shiv, Bartrand, Jonah, and Ankem, Sreeramamurthy. Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels.  United States: N. p., 2017. 
        Web.  doi:10.1016/j.msea.2017.03.011.

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                    Mburu, Sarah, Kolli, R. Prakash, Perea, Daniel E., Schwarm, Samuel C., Eaton, Arielle, Liu, Jia, Patel, Shiv, Bartrand, Jonah, & Ankem, Sreeramamurthy. Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels.  United States.  https://doi.org/10.1016/j.msea.2017.03.011

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                    Mburu, Sarah, Kolli, R. Prakash, Perea, Daniel E., Schwarm, Samuel C., Eaton, Arielle, Liu, Jia, Patel, Shiv, Bartrand, Jonah, and Ankem, Sreeramamurthy. 2017.  
        "Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels".  United States.  https://doi.org/10.1016/j.msea.2017.03.011.

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@article{osti_1358491,

  title        = {Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels},

  author       = {Mburu, Sarah and Kolli, R. Prakash and Perea, Daniel E. and Schwarm, Samuel C. and Eaton, Arielle and Liu, Jia and Patel, Shiv and Bartrand, Jonah and Ankem, Sreeramamurthy},

  abstractNote = {The microstructure and mechanical properties in unaged and thermally aged (at 280 oC, 320 oC, 360 oC, and 400 oC to 4300 h) CF–3 and CF–8 cast duplex stainless steels (CDSS) are investigated. The unaged CF–8 steel has Cr-rich M23C6 carbides located at the δ–ferrite/γ– austenite heterophase interfaces that were not observed in the CF–3 steel and this corresponds to a difference in mechanical properties. Both unaged steels exhibit incipient spinodal decomposition into Fe-rich α–domains and Cr-rich α’–domains. During aging, spinodal decomposition progresses and the mean wavelength (MW) and mean amplitude (MA) of the compositional fluctuations increase as a function of aging temperature. Additionally, G–phase precipitates form between the spinodal decomposition domains in CF–3 at 360 oC and 400 oC and in CF–8 at 400 oC. The microstructural evolution is correlated to changes in mechanical properties.},

  doi          = {10.1016/j.msea.2017.03.011},

  url          = {https://www.osti.gov/biblio/1358491},
  journal      = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},

  issn         = {0921-5093},

  number       = ,

  volume       = 690,

  place        = {United States},

  year         = {Sat Apr 01 00:00:00 EDT 2017},

  month        = {Sat Apr 01 00:00:00 EDT 2017}

}

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Title: Effect of aging temperature on phase decomposition and mechanical properties in cast duplex stainless steels

Abstract

Citation Formats

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Low temperature aging embrittlement of CF-8 stainless steel journal, August 1999

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Properties of thermally embrittled cast duplex stainless steel
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Aging kinetics of CF3 cast stainless steel in temperature range 300–400°C
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Aging and life prediction of cast duplex stainless steel components
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Embrittlement of laboratory and reactor aged CF3,CF8, and CF8M duplex stainless steels
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Study of phase transformation and mechanical properties evolution of duplex stainless steels after long term thermal ageing (>20years)
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Aging degradation of cast stainless steel: Status and program
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Aging of cast duplex stainless steels in LWR systems
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Thermal Aging Phenomena in Cast Duplex Stainless Steels
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Relationship between evolution of mechanical properties of various cast duplex stainless steels and metallurgical and aging parameters: outline of current EDF programmes
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Accurate determination of the number density of G-phase precipitates in thermally aged duplex stainless steel
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Effects of aging temperature on G-phase precipitation and ferrite-phase decomposition in duplex stainless steel
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Kinetics of secondary phase precipitation during spinodal decomposition in duplex stainless steels: A kinetic Monte Carlo model – Comparison with atom probe tomography experiments
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An atom-probe tomographic study of the temporal evolution of the nanostructure of Fe–Cu based high-strength low-carbon steels
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On spinodal decomposition
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Free Energy of a Nonuniform System. I. Interfacial Free Energy
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Spinodal decomposition in Fe-Cr alloys: Experimental study at the atomic level and comparison with computer models—I. Introduction and methodology
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Estimation of composition amplitude: Pa and LBM versus V
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Review of Atom Probe FIB-Based Specimen Preparation Methods
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In situ site-specific specimen preparation for atom probe tomography
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A Focused Ion Beam Specimen Preparation Method to Minimize Gallium Ion Concentration in Copper Atom-Probe Tomography Specimen Tips
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Analysis of Three-dimensional Atom-probe Data by the Proximity Histogram
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Comparison of Compositional and Morphological Atom-Probe Tomography Analyses for a Multicomponent Fe-Cu Steel
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Low temperature aging embrittlement of CF-8 stainless steel
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Characterization of phase properties and deformation in ferritic-austenitic duplex stainless steels by nanoindentation and finite element method
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Microstructure evolution and impact fracture behaviors of Z3CN20-09M stainless steels after long-term thermal aging
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Effect of long-term thermal aging on the mechanical properties of casting duplex stainless steels
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Precipitation of M ₂₃ C ₆ at austenite/ferrite interfaces in duplex stainless steel
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Atomistic study on the site preference and thermodynamic properties for CrFeC
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Influence of tempering temperature on stability of carbide phases in 2.6cr-0.7mo-0.3v steel with various carbon content
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Co-Precipitated and Collocated Carbides and Cu-Rich Precipitates in a Fe–Cu Steel Characterized by Atom-Probe Tomography
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Chemical volume diffusion coefficients for stainless steel corrosion studies
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Diffusional formation of ferrite in iron and its alloys
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Quantitative Evaluation of Spinodal Decomposition in Fe-Cr by Atom Probe Tomography and Radial Distribution Function Analysis
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Kinetics of phase separation in iron-based ternary alloys. II. Numerical simulation of phase separation in Fe–Cr–X(X=Mo, Cu) ternary alloys
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Kinetics of Phase Separation in Fe-Cr-Mo Ternary Alloys
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Recent developments in stainless steels
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The two-step nucleation of G-phase in ferrite
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Trajectory overlaps and local magnification in three-dimensional atom probe
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Atom probe examination of thermally ages CF8M cast stainless steel
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Mechanical property and microstructural change by thermal aging of SCS14A cast duplex stainless steel
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An atom probe perspective on phase separation and precipitation in duplex stainless steels
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Neural network implementation for the prediction of secondary phase precipitation and mechanical feature in a duplex stainless steel
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Effects of Electromagnetic Stirring on the Cast Austenitic Stainless Steel Weldments by Gas Tungsten Arc Welding
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