Influence of Alloying on α-αʹ phase separation in duplex stainless steels

David A. Garfinkel; Jonathan D. Poplawsky; Wei Guo; George A. Young; Julie D. Tucker

doi:10.1007/978-3-319-68454-3_85

Influence of Alloying on α-αʹ phase separation in duplex stainless steels

David A. Garfinkel, Jonathan D. Poplawsky, Wei Guo, George A. Young, Julie D. Tucker

Materials MicroAnalysis

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Thermal embrittlement caused by phase transformations in the temperature range of 204–538 °C limits the service temperature of duplex stainless steels. The present study investigates a set of wrought (2003, 2101, and 2205) and weld (2209-w and 2101-w) alloys in order to better understand how alloying elements affect thermal embrittlement. Samples were aged at 427 °C for up to 10,000 h. The embrittlement and thermal instability were assessed via nanoindentation, impact toughness testing, and atom probe tomography (APT). Results demonstrate that the spinodal amplitude is not an accurate predictor of mechanical degradation, and that nanoindentation within the ferrite grains served as a reasonable approximate for the embrittlement behavior. Compositionally, alloys with a lower concentration of Cr, Mo, and Ni were found to exhibit superior mechanical properties following aging.

Original language	English
Title of host publication	Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors
Editors	Michael Wright, Denise Paraventi, John H. Jackson
Publisher	Springer International Publishing
Pages	1183-1192
Number of pages	10
ISBN (Print)	9783319684536
DOIs	https://doi.org/10.1007/978-3-319-68454-3_85
State	Published - 2018
Event	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017 - Portland, United States Duration: Aug 13 2017 → Aug 17 2017

Publication series

Name	Minerals, Metals and Materials Series
Volume	Part F11
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017
Country/Territory	United States
City	Portland
Period	08/13/17 → 08/17/17

Funding

APT was conducted at Oak Ridge National Laboratory’s Center for Nanophase Materials Sciences (CNMS), which is a U.S. DOE Office of Science User Facility.

Keywords

Duplex stainless steels
Embrittlement
Spinodal decomposition

Access to Document

10.1007/978-3-319-68454-3_85

Cite this

Garfinkel, D. A., Poplawsky, J. D., Guo, W., Young, G. A., & Tucker, J. D. (2018). Influence of Alloying on α-αʹ phase separation in duplex stainless steels. In M. Wright, D. Paraventi, & J. H. Jackson (Eds.), Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors (pp. 1183-1192). (Minerals, Metals and Materials Series; Vol. Part F11). Springer International Publishing. https://doi.org/10.1007/978-3-319-68454-3_85

Garfinkel, David A. ; Poplawsky, Jonathan D. ; Guo, Wei et al. / Influence of Alloying on α-αʹ phase separation in duplex stainless steels. Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. editor / Michael Wright ; Denise Paraventi ; John H. Jackson. Springer International Publishing, 2018. pp. 1183-1192 (Minerals, Metals and Materials Series).

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title = "Influence of Alloying on α-αʹ phase separation in duplex stainless steels",

abstract = "Thermal embrittlement caused by phase transformations in the temperature range of 204–538 °C limits the service temperature of duplex stainless steels. The present study investigates a set of wrought (2003, 2101, and 2205) and weld (2209-w and 2101-w) alloys in order to better understand how alloying elements affect thermal embrittlement. Samples were aged at 427 °C for up to 10,000 h. The embrittlement and thermal instability were assessed via nanoindentation, impact toughness testing, and atom probe tomography (APT). Results demonstrate that the spinodal amplitude is not an accurate predictor of mechanical degradation, and that nanoindentation within the ferrite grains served as a reasonable approximate for the embrittlement behavior. Compositionally, alloys with a lower concentration of Cr, Mo, and Ni were found to exhibit superior mechanical properties following aging.",

keywords = "Duplex stainless steels, Embrittlement, Spinodal decomposition",

author = "Garfinkel, {David A.} and Poplawsky, {Jonathan D.} and Wei Guo and Young, {George A.} and Tucker, {Julie D.}",

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doi = "10.1007/978-3-319-68454-3_85",

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Garfinkel, DA, Poplawsky, JD, Guo, W, Young, GA & Tucker, JD 2018, Influence of Alloying on α-αʹ phase separation in duplex stainless steels. in M Wright, D Paraventi & JH Jackson (eds), Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Minerals, Metals and Materials Series, vol. Part F11, Springer International Publishing, pp. 1183-1192, 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, 2017, Portland, United States, 08/13/17. https://doi.org/10.1007/978-3-319-68454-3_85

Influence of Alloying on α-αʹ phase separation in duplex stainless steels. / Garfinkel, David A.; Poplawsky, Jonathan D.; Guo, Wei et al.
Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. ed. / Michael Wright; Denise Paraventi; John H. Jackson. Springer International Publishing, 2018. p. 1183-1192 (Minerals, Metals and Materials Series; Vol. Part F11).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Influence of Alloying on α-αʹ phase separation in duplex stainless steels

AU - Garfinkel, David A.

AU - Poplawsky, Jonathan D.

AU - Guo, Wei

AU - Young, George A.

AU - Tucker, Julie D.

N1 - Publisher Copyright: © The Minerals, Metals & Materials Society 2018.

PY - 2018

Y1 - 2018

N2 - Thermal embrittlement caused by phase transformations in the temperature range of 204–538 °C limits the service temperature of duplex stainless steels. The present study investigates a set of wrought (2003, 2101, and 2205) and weld (2209-w and 2101-w) alloys in order to better understand how alloying elements affect thermal embrittlement. Samples were aged at 427 °C for up to 10,000 h. The embrittlement and thermal instability were assessed via nanoindentation, impact toughness testing, and atom probe tomography (APT). Results demonstrate that the spinodal amplitude is not an accurate predictor of mechanical degradation, and that nanoindentation within the ferrite grains served as a reasonable approximate for the embrittlement behavior. Compositionally, alloys with a lower concentration of Cr, Mo, and Ni were found to exhibit superior mechanical properties following aging.

AB - Thermal embrittlement caused by phase transformations in the temperature range of 204–538 °C limits the service temperature of duplex stainless steels. The present study investigates a set of wrought (2003, 2101, and 2205) and weld (2209-w and 2101-w) alloys in order to better understand how alloying elements affect thermal embrittlement. Samples were aged at 427 °C for up to 10,000 h. The embrittlement and thermal instability were assessed via nanoindentation, impact toughness testing, and atom probe tomography (APT). Results demonstrate that the spinodal amplitude is not an accurate predictor of mechanical degradation, and that nanoindentation within the ferrite grains served as a reasonable approximate for the embrittlement behavior. Compositionally, alloys with a lower concentration of Cr, Mo, and Ni were found to exhibit superior mechanical properties following aging.

KW - Duplex stainless steels

KW - Embrittlement

KW - Spinodal decomposition

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ER -

Garfinkel DA, Poplawsky JD, Guo W, Young GA, Tucker JD. Influence of Alloying on α-αʹ phase separation in duplex stainless steels. In Wright M, Paraventi D, Jackson JH, editors, Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors. Springer International Publishing. 2018. p. 1183-1192. (Minerals, Metals and Materials Series). doi: 10.1007/978-3-319-68454-3_85

Influence of Alloying on α-αʹ phase separation in duplex stainless steels

Abstract

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Keywords

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