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:10.1007/978-3-030-04639-2_161

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

3 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	Minerals, Metals and Materials Series
Publisher	Springer International Publishing
Pages	2399-2408
Number of pages	10
ISBN (Print)	9783030046385, 9783030046392, 9783319515403, 9783319651354, 9783319728520, 9783319950211
DOIs	https://doi.org/10.1007/978-3-030-04639-2_161
State	Published - 2019
Event	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 - Boston, United States Duration: Aug 18 2019 → Aug 22 2019

Publication series

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

Conference

Conference	18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019
Country/Territory	United States
City	Boston
Period	08/18/19 → 08/22/19

Bibliographical note

Publisher Copyright:
© 2019, The Minerals, Metals & Materials Society.

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Funders	Funder number
U.S. Department of Energy

Keywords

Duplex stainless steels
Embrittlement
Spinodal decomposition

Access to Document

10.1007/978-3-030-04639-2_161

Cite this

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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.}",

note = "Publisher Copyright: {\textcopyright} 2019, The Minerals, Metals & Materials Society.; 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 ; Conference date: 18-08-2019 Through 22-08-2019",

year = "2019",

doi = "10.1007/978-3-030-04639-2_161",

language = "English",

isbn = "9783030046385",

series = "Minerals, Metals and Materials Series",

publisher = "Springer International Publishing",

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}

Garfinkel, DA, Poplawsky, JD, Guo, W, Young, GA & Tucker, JD 2019, Influence of alloying on α-αʹ phase separation in duplex stainless steels. in Minerals, Metals and Materials Series. Minerals, Metals and Materials Series, Springer International Publishing, pp. 2399-2408, 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019, Boston, United States, 08/18/19. https://doi.org/10.1007/978-3-030-04639-2_161

Influence of alloying on α-αʹ phase separation in duplex stainless steels. / Garfinkel, David A.; Poplawsky, Jonathan D.; Guo, Wei et al.
Minerals, Metals and Materials Series. Springer International Publishing, 2019. p. 2399-2408 (Minerals, Metals and Materials Series).

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

TY - GEN

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.

PY - 2019

Y1 - 2019

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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Y2 - 18 August 2019 through 22 August 2019

ER -

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

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

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