Microstructural manifestation of dynamic strain aging in AISI 316 stainless steel

Wade Karlsen (Corresponding Author), M. Ivanchenko, Ulla Ehrnstén, Y. Yagodzinskyy, Hannu Hänninen

    Research output: Contribution to journalArticleScientificpeer-review

    47 Citations (Scopus)

    Abstract

    Dynamic strain aging (DSA) affects a material’s mechanical behaviour. In the current study, the deformation microstructures of AISI 316 stainless steel specimens were examined after tensile testing at several temperatures both in and out of the DSA-regime (200, 288 and 400 °C), and the effect of straining on free nitrogen evolution at those temperatures was studied by Anelastic Mechanical Loss Spectrometry (Internal Friction). Analysis of the nitrogen-induced Snoek-like peak after straining indicated that DSA behaviour is associated with the formation of sub-micron scale, nitrogen-enriched zones in the austenitic matrix. Long-range planarity was observed in the dislocation structures at 400 °C and short-range planarity at 288 °C, but at 200 °C the microstructure exhibited cellular dislocation structure. Diffusion re-distribution of nitrogen in the DSA-regime affected the deformation behaviour of the material by restricting cross-slip, which in turn promotes strain localization, degrading the mechanical performance of the material.
    Original languageEnglish
    Pages (from-to)156-161
    Number of pages6
    JournalJournal of Nuclear Materials
    Volume395
    Issue number1-3
    DOIs
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    precipitation hardening
    Stainless Steel
    stainless steels
    Stainless steel
    Aging of materials
    nitrogen
    Nitrogen
    microstructure
    internal friction
    Microstructure
    Internal friction
    Tensile testing
    slip
    Spectrometry
    temperature
    matrices
    Temperature
    spectroscopy

    Cite this

    Karlsen, Wade ; Ivanchenko, M. ; Ehrnstén, Ulla ; Yagodzinskyy, Y. ; Hänninen, Hannu. / Microstructural manifestation of dynamic strain aging in AISI 316 stainless steel. In: Journal of Nuclear Materials. 2009 ; Vol. 395, No. 1-3. pp. 156-161.
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    title = "Microstructural manifestation of dynamic strain aging in AISI 316 stainless steel",
    abstract = "Dynamic strain aging (DSA) affects a material’s mechanical behaviour. In the current study, the deformation microstructures of AISI 316 stainless steel specimens were examined after tensile testing at several temperatures both in and out of the DSA-regime (200, 288 and 400 °C), and the effect of straining on free nitrogen evolution at those temperatures was studied by Anelastic Mechanical Loss Spectrometry (Internal Friction). Analysis of the nitrogen-induced Snoek-like peak after straining indicated that DSA behaviour is associated with the formation of sub-micron scale, nitrogen-enriched zones in the austenitic matrix. Long-range planarity was observed in the dislocation structures at 400 °C and short-range planarity at 288 °C, but at 200 °C the microstructure exhibited cellular dislocation structure. Diffusion re-distribution of nitrogen in the DSA-regime affected the deformation behaviour of the material by restricting cross-slip, which in turn promotes strain localization, degrading the mechanical performance of the material.",
    author = "Wade Karlsen and M. Ivanchenko and Ulla Ehrnst{\'e}n and Y. Yagodzinskyy and Hannu H{\"a}nninen",
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    Microstructural manifestation of dynamic strain aging in AISI 316 stainless steel. / Karlsen, Wade (Corresponding Author); Ivanchenko, M.; Ehrnstén, Ulla; Yagodzinskyy, Y.; Hänninen, Hannu.

    In: Journal of Nuclear Materials, Vol. 395, No. 1-3, 2009, p. 156-161.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Microstructural manifestation of dynamic strain aging in AISI 316 stainless steel

    AU - Karlsen, Wade

    AU - Ivanchenko, M.

    AU - Ehrnstén, Ulla

    AU - Yagodzinskyy, Y.

    AU - Hänninen, Hannu

    N1 - Project code: 32871

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    N2 - Dynamic strain aging (DSA) affects a material’s mechanical behaviour. In the current study, the deformation microstructures of AISI 316 stainless steel specimens were examined after tensile testing at several temperatures both in and out of the DSA-regime (200, 288 and 400 °C), and the effect of straining on free nitrogen evolution at those temperatures was studied by Anelastic Mechanical Loss Spectrometry (Internal Friction). Analysis of the nitrogen-induced Snoek-like peak after straining indicated that DSA behaviour is associated with the formation of sub-micron scale, nitrogen-enriched zones in the austenitic matrix. Long-range planarity was observed in the dislocation structures at 400 °C and short-range planarity at 288 °C, but at 200 °C the microstructure exhibited cellular dislocation structure. Diffusion re-distribution of nitrogen in the DSA-regime affected the deformation behaviour of the material by restricting cross-slip, which in turn promotes strain localization, degrading the mechanical performance of the material.

    AB - Dynamic strain aging (DSA) affects a material’s mechanical behaviour. In the current study, the deformation microstructures of AISI 316 stainless steel specimens were examined after tensile testing at several temperatures both in and out of the DSA-regime (200, 288 and 400 °C), and the effect of straining on free nitrogen evolution at those temperatures was studied by Anelastic Mechanical Loss Spectrometry (Internal Friction). Analysis of the nitrogen-induced Snoek-like peak after straining indicated that DSA behaviour is associated with the formation of sub-micron scale, nitrogen-enriched zones in the austenitic matrix. Long-range planarity was observed in the dislocation structures at 400 °C and short-range planarity at 288 °C, but at 200 °C the microstructure exhibited cellular dislocation structure. Diffusion re-distribution of nitrogen in the DSA-regime affected the deformation behaviour of the material by restricting cross-slip, which in turn promotes strain localization, degrading the mechanical performance of the material.

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    DO - 10.1016/j.jnucmat.2009.10.047

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    JF - Journal of Nuclear Materials

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