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

Dept. of Materials Science & Engineering

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

27 Scopus citations

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
State	Published - 24 Oct 2019

Keywords

Austenitic
Fracture
High-manganese steel
Hydrogen charging
Hydrogen embrittlement

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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",

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year = "2019",

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

language = "English",

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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

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

UR - http://www.scopus.com/inward/record.url?scp=85071944786&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2019.138367

DO - 10.1016/j.msea.2019.138367

M3 - Article

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SN - 0921-5093

VL - 766

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 138367

ER -

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

Abstract

Keywords

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