Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe-Mn-Al-C light weight austenitic steel

Motomichi Koyama; Hauke Springer; Sergiy V. Merzlikin; Kaneaki Tsuzaki; Eiji Akiyama; Dierk Raabe

doi:10.1016/j.ijhydene.2013.12.171

Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe-Mn-Al-C light weight austenitic steel

Motomichi Koyama, Hauke Springer, Sergiy V. Merzlikin, Kaneaki Tsuzaki, Eiji Akiyama, Dierk Raabe

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

159 Citations (Scopus)

Abstract

Hydrogen embrittlement of a precipitation-hardened Fe-26Mn-11Al-1.2C (wt.%) austenitic steel was examined by tensile testing under hydrogen charging and thermal desorption analysis. While the high strength of the alloy (>1 GPa) was not affected, hydrogen charging reduced the engineering tensile elongation from 44 to only 5%. Hydrogen-assisted cracking mechanisms were studied via the joint use of electron backscatter diffraction analysis and orientation-optimized electron channeling contrast imaging. The observed embrittlement was mainly due to two mechanisms, namely, grain boundary triple junction cracking and slip-localization-induced intergranular cracking along micro-voids formed on grain boundaries. Grain boundary triple junction cracking occurs preferentially, while the microscopically ductile slip-localization-induced intergranular cracking assists crack growth during plastic deformation resulting in macroscopic brittle fracture appearance.

Original language	English
Pages (from-to)	4634-4646
Number of pages	13
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	9
DOIs	https://doi.org/10.1016/j.ijhydene.2013.12.171
Publication status	Published - 2014 Mar 18
Externally published	Yes

Keywords

Austenitic steel
Electron channeling contrast imaging
Hydrogen embrittlement
Precipitation hardening
Tension test

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

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10.1016/j.ijhydene.2013.12.171

Cite this

@article{2752a819c7e345959cfdcb5d12405afe,

title = "Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe-Mn-Al-C light weight austenitic steel",

abstract = "Hydrogen embrittlement of a precipitation-hardened Fe-26Mn-11Al-1.2C (wt.%) austenitic steel was examined by tensile testing under hydrogen charging and thermal desorption analysis. While the high strength of the alloy (>1 GPa) was not affected, hydrogen charging reduced the engineering tensile elongation from 44 to only 5%. Hydrogen-assisted cracking mechanisms were studied via the joint use of electron backscatter diffraction analysis and orientation-optimized electron channeling contrast imaging. The observed embrittlement was mainly due to two mechanisms, namely, grain boundary triple junction cracking and slip-localization-induced intergranular cracking along micro-voids formed on grain boundaries. Grain boundary triple junction cracking occurs preferentially, while the microscopically ductile slip-localization-induced intergranular cracking assists crack growth during plastic deformation resulting in macroscopic brittle fracture appearance.",

keywords = "Austenitic steel, Electron channeling contrast imaging, Hydrogen embrittlement, Precipitation hardening, Tension test",

author = "Motomichi Koyama and Hauke Springer and Merzlikin, {Sergiy V.} and Kaneaki Tsuzaki and Eiji Akiyama and Dierk Raabe",

note = "Funding Information: M.K. acknowledges the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. ",

year = "2014",

month = mar,

day = "18",

doi = "10.1016/j.ijhydene.2013.12.171",

language = "English",

volume = "39",

pages = "4634--4646",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe-Mn-Al-C light weight austenitic steel

AU - Koyama, Motomichi

AU - Springer, Hauke

AU - Merzlikin, Sergiy V.

AU - Tsuzaki, Kaneaki

AU - Akiyama, Eiji

AU - Raabe, Dierk

N1 - Funding Information: M.K. acknowledges the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists.

PY - 2014/3/18

Y1 - 2014/3/18

N2 - Hydrogen embrittlement of a precipitation-hardened Fe-26Mn-11Al-1.2C (wt.%) austenitic steel was examined by tensile testing under hydrogen charging and thermal desorption analysis. While the high strength of the alloy (>1 GPa) was not affected, hydrogen charging reduced the engineering tensile elongation from 44 to only 5%. Hydrogen-assisted cracking mechanisms were studied via the joint use of electron backscatter diffraction analysis and orientation-optimized electron channeling contrast imaging. The observed embrittlement was mainly due to two mechanisms, namely, grain boundary triple junction cracking and slip-localization-induced intergranular cracking along micro-voids formed on grain boundaries. Grain boundary triple junction cracking occurs preferentially, while the microscopically ductile slip-localization-induced intergranular cracking assists crack growth during plastic deformation resulting in macroscopic brittle fracture appearance.

AB - Hydrogen embrittlement of a precipitation-hardened Fe-26Mn-11Al-1.2C (wt.%) austenitic steel was examined by tensile testing under hydrogen charging and thermal desorption analysis. While the high strength of the alloy (>1 GPa) was not affected, hydrogen charging reduced the engineering tensile elongation from 44 to only 5%. Hydrogen-assisted cracking mechanisms were studied via the joint use of electron backscatter diffraction analysis and orientation-optimized electron channeling contrast imaging. The observed embrittlement was mainly due to two mechanisms, namely, grain boundary triple junction cracking and slip-localization-induced intergranular cracking along micro-voids formed on grain boundaries. Grain boundary triple junction cracking occurs preferentially, while the microscopically ductile slip-localization-induced intergranular cracking assists crack growth during plastic deformation resulting in macroscopic brittle fracture appearance.

KW - Austenitic steel

KW - Electron channeling contrast imaging

KW - Hydrogen embrittlement

KW - Precipitation hardening

KW - Tension test

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DO - 10.1016/j.ijhydene.2013.12.171

M3 - Article

AN - SCOPUS:84895455730

SN - 0360-3199

VL - 39

SP - 4634

EP - 4646

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 9

ER -

Hydrogen embrittlement associated with strain localization in a precipitation-hardened Fe-Mn-Al-C light weight austenitic steel

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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