Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods

Sang In Lee; Ji Min Lee; Seung Yong Lee; Han Jin Kim; Jin Yoo Suh; Jae Hyeok Shim; Un Bong Baek; Seung Hoon Nahm; Joonho Lee; Byoungchul Hwang

doi:10.1016/j.msea.2019.138367

Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods

Sang In Lee, Ji Min Lee, Seung Yong Lee, Han Jin Kim, Jin Yoo Suh, Jae Hyeok Shim, Un Bong Baek, Seung Hoon Nahm, Joonho Lee, Byoungchul Hwang

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.

Original language	English
Article number	138367
Journal	Materials Science and Engineering A
Volume	766
DOIs	https://doi.org/10.1016/j.msea.2019.138367
Publication status	Published - 2019 Oct 24

Keywords

Austenitic
Fracture
High-manganese steel
Hydrogen charging
Hydrogen embrittlement

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2019.138367

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title = "Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods",

abstract = "The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.",

keywords = "Austenitic, Fracture, High-manganese steel, Hydrogen charging, Hydrogen embrittlement",

author = "Lee, {Sang In} and Lee, {Ji Min} and Lee, {Seung Yong} and Kim, {Han Jin} and Suh, {Jin Yoo} and Shim, {Jae Hyeok} and Baek, {Un Bong} and Nahm, {Seung Hoon} and Joonho Lee and Byoungchul Hwang",

note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea, South Korea ( NRF-2017R1A2B2009336 ) and by the Converging Research Center Program through the Ministry of Science, ICT and Future Planning, South Korea ( NRF-2014M3C1A8048842 ). Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = oct,

day = "24",

doi = "10.1016/j.msea.2019.138367",

language = "English",

volume = "766",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

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T1 - Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods

AU - Lee, Sang In

AU - Lee, Ji Min

AU - Lee, Seung Yong

AU - Kim, Han Jin

AU - Suh, Jin Yoo

AU - Shim, Jae Hyeok

AU - Baek, Un Bong

AU - Nahm, Seung Hoon

AU - Lee, Joonho

AU - Hwang, Byoungchul

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea, South Korea ( NRF-2017R1A2B2009336 ) and by the Converging Research Center Program through the Ministry of Science, ICT and Future Planning, South Korea ( NRF-2014M3C1A8048842 ). Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/10/24

Y1 - 2019/10/24

N2 - The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.

AB - The hydrogen-embrittlement susceptibility of austenitic high-manganese steels according to different hydrogen-charging test methods was discussed in terms of hydrogen-embrittlement process and fracture mechanism. Ex-situ electrochemical and high-pressure thermal hydrogen-charging methods exhibited a difference in hydrogen-embrittlement susceptibility because they affect the permeability and diffusivity of hydrogen. Moreover, the in-situ high-pressure gaseous hydrogen-charging method showed the most apparent hydrogen-embrittlement susceptibility because higher triaxial stress in the necked region caused by plastic instability accelerates hydrogen charging in the specimen during tensile testing in hydrogen environment, thus leading to intergranular fracture in all regions.

KW - Austenitic

KW - Fracture

KW - High-manganese steel

KW - Hydrogen charging

KW - Hydrogen embrittlement

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DO - 10.1016/j.msea.2019.138367

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SN - 0921-5093

VL - 766

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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M1 - 138367

ER -

Tensile and fracture behaviors of austenitic high-manganese steels subject to different hydrogen embrittlement test methods

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Keywords

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