On the unusual intergranular corrosion resistance of 316L stainless steel additively manufactured by selective laser melting

Majid Laleh; Anthony E. Hughes; Wei Xu; Nima Haghdadi; Ke Wang; Pavel Cizek; Ian Gibson; Mike Yongjun Tan

doi:10.1016/j.corsci.2019.108189

On the unusual intergranular corrosion resistance of 316L stainless steel additively manufactured by selective laser melting

Majid Laleh
, Anthony E. Hughes
, Wei Xu
, Nima Haghdadi
, Ke Wang
, Pavel Cizek
, Ian Gibson
, Mike Yongjun Tan^*

^*Corresponding author for this work

Design Engineering

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

133 Citations (Scopus)

664 Downloads (Pure)

Abstract

The intergranular corrosion (IGC) resistance of 316L stainless steel (316L SS) produced by selective laser melting (SLM) was investigated using microscopy analysis and electrochemical measurements. The IGC resistance of SLM-produced 316L SS, determined using a double-loop electrochemical potentiokinetic reactivation test, was found to be substantially higher than that of conventional 316L SS. This unusual behaviour was explained by the fact that no Cr-rich precipitates were detected for SLM-produced specimens after long-term sensitisation heat-treatment and those SLM-produced specimens exhibited a high frequency of twin boundaries and low-angle grain boundaries along with fine grains, leading to the avoidance of localised Cr depletion.

Original language	English
Article number	108189
Journal	Corrosion science
Volume	161
DOIs	https://doi.org/10.1016/j.corsci.2019.108189
Publication status	Published - Dec 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

316L stainless steel
Additive manufacturing
Grain boundary
Intergranular corrosion
Precipitation
22/4 OA procedure

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10.1016/j.corsci.2019.108189

Laleh-2019-On-the-unusual-intergranular-corrosFinal published version, 8.19 MBLicence: Taverne

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title = "On the unusual intergranular corrosion resistance of 316L stainless steel additively manufactured by selective laser melting",

abstract = "The intergranular corrosion (IGC) resistance of 316L stainless steel (316L SS) produced by selective laser melting (SLM) was investigated using microscopy analysis and electrochemical measurements. The IGC resistance of SLM-produced 316L SS, determined using a double-loop electrochemical potentiokinetic reactivation test, was found to be substantially higher than that of conventional 316L SS. This unusual behaviour was explained by the fact that no Cr-rich precipitates were detected for SLM-produced specimens after long-term sensitisation heat-treatment and those SLM-produced specimens exhibited a high frequency of twin boundaries and low-angle grain boundaries along with fine grains, leading to the avoidance of localised Cr depletion.",

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author = "Majid Laleh and Hughes, \{Anthony E.\} and Wei Xu and Nima Haghdadi and Ke Wang and Pavel Cizek and Ian Gibson and Tan, \{Mike Yongjun\}",

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doi = "10.1016/j.corsci.2019.108189",

language = "English",

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journal = "Corrosion science",

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TY - JOUR

T1 - On the unusual intergranular corrosion resistance of 316L stainless steel additively manufactured by selective laser melting

AU - Laleh, Majid

AU - Hughes, Anthony E.

AU - Xu, Wei

AU - Haghdadi, Nima

AU - Wang, Ke

AU - Cizek, Pavel

AU - Gibson, Ian

AU - Tan, Mike Yongjun

PY - 2019/12

Y1 - 2019/12

N2 - The intergranular corrosion (IGC) resistance of 316L stainless steel (316L SS) produced by selective laser melting (SLM) was investigated using microscopy analysis and electrochemical measurements. The IGC resistance of SLM-produced 316L SS, determined using a double-loop electrochemical potentiokinetic reactivation test, was found to be substantially higher than that of conventional 316L SS. This unusual behaviour was explained by the fact that no Cr-rich precipitates were detected for SLM-produced specimens after long-term sensitisation heat-treatment and those SLM-produced specimens exhibited a high frequency of twin boundaries and low-angle grain boundaries along with fine grains, leading to the avoidance of localised Cr depletion.

AB - The intergranular corrosion (IGC) resistance of 316L stainless steel (316L SS) produced by selective laser melting (SLM) was investigated using microscopy analysis and electrochemical measurements. The IGC resistance of SLM-produced 316L SS, determined using a double-loop electrochemical potentiokinetic reactivation test, was found to be substantially higher than that of conventional 316L SS. This unusual behaviour was explained by the fact that no Cr-rich precipitates were detected for SLM-produced specimens after long-term sensitisation heat-treatment and those SLM-produced specimens exhibited a high frequency of twin boundaries and low-angle grain boundaries along with fine grains, leading to the avoidance of localised Cr depletion.

KW - 316L stainless steel

KW - Additive manufacturing

KW - Grain boundary

KW - Intergranular corrosion

KW - Precipitation

KW - 22/4 OA procedure

UR - https://www.scopus.com/pages/publications/85071681503

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DO - 10.1016/j.corsci.2019.108189

M3 - Article

AN - SCOPUS:85071681503

SN - 0010-938X

VL - 161

JO - Corrosion science

JF - Corrosion science

M1 - 108189

ER -

On the unusual intergranular corrosion resistance of 316L stainless steel additively manufactured by selective laser melting

Abstract

UN SDGs

Keywords

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