Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013)

Mykola Ivanchenko, Yuriy Yagodzinskyy, Ulla Ehrnsten, Wade Karlsen, Hannu Hänninen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Interstitial atoms such as carbon and nitrogen play an important role in the
mechanical properties of austenitic stainless steels and Inconel alloys. Strength
and creep resistance of these alloys in the environmental conditions of nuclear
reactors depend on the amount, state and diffusion mobility of interstitial atoms
dissolved in the alloy. Because of the interaction of carbon and nitrogen with
mobile dislocations, even a minor content in the solid solution results in dynamic
strain aging (DSA) of the alloys at temperatures above 200 oC [1 - 3]. DSA is manifested by negative strain rate sensitivity, and serrated yielding during straining at elevated temperatures and results often in a remarkable degradation of mechanical properties. DSA phenomenon leads to inhomogeneous plastic flow, which results in strain localization that can affect crack initiation and propagation.
Original languageEnglish
Title of host publication20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20
Subtitle of host publicationBook of abstracts. Vol. 1
PublisherVTT Technical Research Centre of Finland
Pages57-59
ISBN (Electronic)978-951-38-6338-8
ISBN (Print)978-951-38-6337-1
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication
Event20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20 - Espoo, Finland
Duration: 9 Aug 200914 Aug 2009
Conference number: 11

Publication series

NameVTT Symposium
PublisherVTT
Number256
ISSN (Print)0357–9387

Conference

Conference20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20
Abbreviated titleSMiRT 20
CountryFinland
CityEspoo
Period9/08/0914/08/09

Fingerprint

Inconel (trademark)
austenitic stainless steels
interstitials
nitrogen
creep strength
plastic flow
carbon
crack initiation
crack propagation
strain rate
solid solutions
mechanical properties
degradation
temperature
atoms
interactions

Cite this

Ivanchenko, M., Yagodzinskyy, Y., Ehrnsten, U., Karlsen, W., & Hänninen, H. (2009). Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013). In 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20: Book of abstracts. Vol. 1 (pp. 57-59). VTT Technical Research Centre of Finland. VTT Symposium, No. 256
Ivanchenko, Mykola ; Yagodzinskyy, Yuriy ; Ehrnsten, Ulla ; Karlsen, Wade ; Hänninen, Hannu. / Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013). 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20: Book of abstracts. Vol. 1. VTT Technical Research Centre of Finland, 2009. pp. 57-59 (VTT Symposium; No. 256).
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title = "Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013)",
abstract = "Interstitial atoms such as carbon and nitrogen play an important role in themechanical properties of austenitic stainless steels and Inconel alloys. Strengthand creep resistance of these alloys in the environmental conditions of nuclearreactors depend on the amount, state and diffusion mobility of interstitial atomsdissolved in the alloy. Because of the interaction of carbon and nitrogen withmobile dislocations, even a minor content in the solid solution results in dynamicstrain aging (DSA) of the alloys at temperatures above 200 oC [1 - 3]. DSA is manifested by negative strain rate sensitivity, and serrated yielding during straining at elevated temperatures and results often in a remarkable degradation of mechanical properties. DSA phenomenon leads to inhomogeneous plastic flow, which results in strain localization that can affect crack initiation and propagation.",
author = "Mykola Ivanchenko and Yuriy Yagodzinskyy and Ulla Ehrnsten and Wade Karlsen and Hannu H{\"a}nninen",
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language = "English",
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Ivanchenko, M, Yagodzinskyy, Y, Ehrnsten, U, Karlsen, W & Hänninen, H 2009, Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013). in 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20: Book of abstracts. Vol. 1. VTT Technical Research Centre of Finland, VTT Symposium, no. 256, pp. 57-59, 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20, Espoo, Finland, 9/08/09.

Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013). / Ivanchenko, Mykola; Yagodzinskyy, Yuriy; Ehrnsten, Ulla; Karlsen, Wade; Hänninen, Hannu.

20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20: Book of abstracts. Vol. 1. VTT Technical Research Centre of Finland, 2009. p. 57-59 (VTT Symposium; No. 256).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013)

AU - Ivanchenko, Mykola

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AU - Karlsen, Wade

AU - Hänninen, Hannu

N1 - Project code: 32871

PY - 2009

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N2 - Interstitial atoms such as carbon and nitrogen play an important role in themechanical properties of austenitic stainless steels and Inconel alloys. Strengthand creep resistance of these alloys in the environmental conditions of nuclearreactors depend on the amount, state and diffusion mobility of interstitial atomsdissolved in the alloy. Because of the interaction of carbon and nitrogen withmobile dislocations, even a minor content in the solid solution results in dynamicstrain aging (DSA) of the alloys at temperatures above 200 oC [1 - 3]. DSA is manifested by negative strain rate sensitivity, and serrated yielding during straining at elevated temperatures and results often in a remarkable degradation of mechanical properties. DSA phenomenon leads to inhomogeneous plastic flow, which results in strain localization that can affect crack initiation and propagation.

AB - Interstitial atoms such as carbon and nitrogen play an important role in themechanical properties of austenitic stainless steels and Inconel alloys. Strengthand creep resistance of these alloys in the environmental conditions of nuclearreactors depend on the amount, state and diffusion mobility of interstitial atomsdissolved in the alloy. Because of the interaction of carbon and nitrogen withmobile dislocations, even a minor content in the solid solution results in dynamicstrain aging (DSA) of the alloys at temperatures above 200 oC [1 - 3]. DSA is manifested by negative strain rate sensitivity, and serrated yielding during straining at elevated temperatures and results often in a remarkable degradation of mechanical properties. DSA phenomenon leads to inhomogeneous plastic flow, which results in strain localization that can affect crack initiation and propagation.

M3 - Conference article in proceedings

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BT - 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20

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Ivanchenko M, Yagodzinskyy Y, Ehrnsten U, Karlsen W, Hänninen H. Manifestations of DSA in austenitic stainless steels and inconel alloys (1-2013). In 20th International Conference on Structural Mechanics in Reactor Technology, SMiRT 20: Book of abstracts. Vol. 1. VTT Technical Research Centre of Finland. 2009. p. 57-59. (VTT Symposium; No. 256).