Structural analysis and intergranular corrosion tests of AISI 316L steel

Z. Stonawská; M. Svoboda; M. Sozańska; M. Křístková; J. Sojka; C. Dagbert; L. Hyspecká

doi:10.1111/j.1365-2818.2006.01664.x

Structural analysis and intergranular corrosion tests of AISI 316L steel

Z. Stonawská
, M. Svoboda
, M. Sozańska
, M. Křístková
, J. Sojka
, C. Dagbert
, L. Hyspecká

Department of Material Technologies (RM/RM3)

Czech Academy of Sciences
VŠB – Technical University of Ostrava
Ecole Centrale

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

11 Citations (Scopus)

Abstract

Pure AISI 316L steel is investigated after solution heat treatment (1050°C/H₂O) and structural sensitization (650°C). Two quite different intergranular corrosion tests are used to determine the degree of structural sensitization due to the precipitation of secondary phases along the grain boundaries (mainly the M₂₃C₆ and σ-phase): the oxalic acid etch test and the electrochemical potentio-kinetic reactivation test. Generally, the dissolution of chromium-rich carbides (M₂₃C ₆) is provoked by oxalic acid etch tests, whereas the chromium-depleted zones, in the vicinity of chromium-rich carbides (M ₂₃C₆), are attacked by electrochemical potentio-kinetic reactivation tests. Both intergranular corrosion tests are used to determine the maximum degree of structural sensitization. Thus structural analysis by carbon replicas reveals the Laves phase, and both the M₂₃C₆ and (Cr,Mo)_x(Fe,Ni)_y phases. The results of intergranular corrosion tests are related to the findings of the structural analysis.

Original language	English
Pages (from-to)	62-64
Number of pages	3
Journal	Journal of Microscopy
Volume	224
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2818.2006.01664.x
Publication status	Published - Oct 2006

Keywords

AISI 316
Intergranular corrosion
Structural analysis

ASJC Scopus subject areas

Pathology and Forensic Medicine
Histology

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10.1111/j.1365-2818.2006.01664.x

Cite this

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title = "Structural analysis and intergranular corrosion tests of AISI 316L steel",

abstract = "Pure AISI 316L steel is investigated after solution heat treatment (1050°C/H2O) and structural sensitization (650°C). Two quite different intergranular corrosion tests are used to determine the degree of structural sensitization due to the precipitation of secondary phases along the grain boundaries (mainly the M23C6 and σ-phase): the oxalic acid etch test and the electrochemical potentio-kinetic reactivation test. Generally, the dissolution of chromium-rich carbides (M23C 6) is provoked by oxalic acid etch tests, whereas the chromium-depleted zones, in the vicinity of chromium-rich carbides (M 23C6), are attacked by electrochemical potentio-kinetic reactivation tests. Both intergranular corrosion tests are used to determine the maximum degree of structural sensitization. Thus structural analysis by carbon replicas reveals the Laves phase, and both the M23C6 and (Cr,Mo)x(Fe,Ni)y phases. The results of intergranular corrosion tests are related to the findings of the structural analysis.",

keywords = "AISI 316, Intergranular corrosion, Structural analysis",

author = "Z. Stonawsk{\'a} and M. Svoboda and M. Soza{\'n}ska and M. K{\v r}{\'i}stkov{\'a} and J. Sojka and C. Dagbert and L. Hyspeck{\'a}",

year = "2006",

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doi = "10.1111/j.1365-2818.2006.01664.x",

language = "English",

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T1 - Structural analysis and intergranular corrosion tests of AISI 316L steel

AU - Stonawská, Z.

AU - Svoboda, M.

AU - Sozańska, M.

AU - Křístková, M.

AU - Sojka, J.

AU - Dagbert, C.

AU - Hyspecká, L.

PY - 2006/10

Y1 - 2006/10

N2 - Pure AISI 316L steel is investigated after solution heat treatment (1050°C/H2O) and structural sensitization (650°C). Two quite different intergranular corrosion tests are used to determine the degree of structural sensitization due to the precipitation of secondary phases along the grain boundaries (mainly the M23C6 and σ-phase): the oxalic acid etch test and the electrochemical potentio-kinetic reactivation test. Generally, the dissolution of chromium-rich carbides (M23C 6) is provoked by oxalic acid etch tests, whereas the chromium-depleted zones, in the vicinity of chromium-rich carbides (M 23C6), are attacked by electrochemical potentio-kinetic reactivation tests. Both intergranular corrosion tests are used to determine the maximum degree of structural sensitization. Thus structural analysis by carbon replicas reveals the Laves phase, and both the M23C6 and (Cr,Mo)x(Fe,Ni)y phases. The results of intergranular corrosion tests are related to the findings of the structural analysis.

AB - Pure AISI 316L steel is investigated after solution heat treatment (1050°C/H2O) and structural sensitization (650°C). Two quite different intergranular corrosion tests are used to determine the degree of structural sensitization due to the precipitation of secondary phases along the grain boundaries (mainly the M23C6 and σ-phase): the oxalic acid etch test and the electrochemical potentio-kinetic reactivation test. Generally, the dissolution of chromium-rich carbides (M23C 6) is provoked by oxalic acid etch tests, whereas the chromium-depleted zones, in the vicinity of chromium-rich carbides (M 23C6), are attacked by electrochemical potentio-kinetic reactivation tests. Both intergranular corrosion tests are used to determine the maximum degree of structural sensitization. Thus structural analysis by carbon replicas reveals the Laves phase, and both the M23C6 and (Cr,Mo)x(Fe,Ni)y phases. The results of intergranular corrosion tests are related to the findings of the structural analysis.

KW - AISI 316

KW - Intergranular corrosion

KW - Structural analysis

UR - https://www.scopus.com/pages/publications/33750802118

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DO - 10.1111/j.1365-2818.2006.01664.x

M3 - Article

AN - SCOPUS:33750802118

SN - 0022-2720

VL - 224

SP - 62

EP - 64

JO - Journal of Microscopy

JF - Journal of Microscopy

IS - 1

ER -

Structural analysis and intergranular corrosion tests of AISI 316L steel

Abstract

Keywords

ASJC Scopus subject areas

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