Microstructural characterization of pulsed plasma nitrided 316L stainless steel

M. Asgari; A. Barnoush; R. Johnsen; R. Hoel

doi:10.1016/j.msea.2011.09.055

Microstructural characterization of pulsed plasma nitrided 316L stainless steel

M. Asgari, A. Barnoush^*, R. Johnsen, R. Hoel

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 °C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called "extended austenite phase" These surface layers are often also referred to as S-phase, m-phase or γ-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected.

Original language	English
Pages (from-to)	425-434
Number of pages	10
Journal	Materials Science and Engineering: A
Volume	529
Issue number	1
DOIs	https://doi.org/10.1016/j.msea.2011.09.055
Publication status	Published - 25 Nov 2011
Externally published	Yes

Keywords

Austenite
EBSD
Microanalysis
Nanoindentation
Pulsed plasma nitriding
Stainless steel 316L

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10.1016/j.msea.2011.09.055

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title = "Microstructural characterization of pulsed plasma nitrided 316L stainless steel",

abstract = "Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 °C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called {"}extended austenite phase{"} These surface layers are often also referred to as S-phase, m-phase or γ-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected.",

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author = "M. Asgari and A. Barnoush and R. Johnsen and R. Hoel",

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AU - Asgari, M.

AU - Barnoush, A.

AU - Johnsen, R.

AU - Hoel, R.

PY - 2011/11/25

Y1 - 2011/11/25

N2 - Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 °C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called "extended austenite phase" These surface layers are often also referred to as S-phase, m-phase or γ-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected.

AB - Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 °C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called "extended austenite phase" These surface layers are often also referred to as S-phase, m-phase or γ-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected.

KW - Austenite

KW - EBSD

KW - Microanalysis

KW - Nanoindentation

KW - Pulsed plasma nitriding

KW - Stainless steel 316L

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

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ER -

Microstructural characterization of pulsed plasma nitrided 316L stainless steel

Abstract

Keywords

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