Tensile and Fracture Behaviors of Austenitic High-Manganese Steels Subject to Different Hydrogen Embrittlement Test Methods

22 Pages Posted: 20 Jun 2019

See all articles by Sang-In Lee

Sang-In Lee

Seoul National University of Science and Technology - Department of Materials Science and Engineering

Ji-Min Lee

Seoul National University of Science and Technology - Department of Materials Science and Engineering

Seung-Yong Lee

Tokyo Institute of Technology - Department of Materials Science and Engineering

Han-Jin Kim

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center

Jin-Yoo Suh

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center

Jae-Hyeok Shim

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center

Un-Bong Baek

Korea Research Institute of Standards and Science (KRISS) - Division of Industrial Metrology

Seung-Hoon Nahm

Korea Research Institute of Standards and Science (KRISS) - Division of Industrial Metrology

Joonho Lee

Korea University - Department of Materials Science and Engineering

Byoungchul Hwang

Seoul National University of Science and Technology - Department of Materials Science and Engineering

Date Written: June 19, 2019

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 at all regions of the specimens.

Keywords: austenitic, steel, hydrogen embrittlement, high-manganese, fracture

Suggested Citation

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 Lee, Joonho and Hwang, Byoungchul, Tensile and Fracture Behaviors of Austenitic High-Manganese Steels Subject to Different Hydrogen Embrittlement Test Methods (June 19, 2019). Available at SSRN: https://ssrn.com/abstract=3406393 or http://dx.doi.org/10.2139/ssrn.3406393

Sang-In Lee

Seoul National University of Science and Technology - Department of Materials Science and Engineering

Seoul, 01811
Korea, Republic of (South Korea)

Ji-Min Lee

Seoul National University of Science and Technology - Department of Materials Science and Engineering

Seoul, 01811
Korea, Republic of (South Korea)

Seung-Yong Lee

Tokyo Institute of Technology - Department of Materials Science and Engineering

Tokyo, 226-8503
Japan

Han-Jin Kim

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center

Seoul, 02792
Korea, Republic of (South Korea)

Jin-Yoo Suh

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center

Seoul, 02792
Korea, Republic of (South Korea)

Jae-Hyeok Shim

Korea Institute of Science and Technology (KIST) - High Temperature Energy Materials Research Center ( email )

Seoul, 02792
Korea, Republic of (South Korea)

Un-Bong Baek

Korea Research Institute of Standards and Science (KRISS) - Division of Industrial Metrology

Daejeon, 34113
Korea, Republic of (South Korea)

Seung-Hoon Nahm

Korea Research Institute of Standards and Science (KRISS) - Division of Industrial Metrology

Daejeon, 34113
Korea, Republic of (South Korea)

Joonho Lee

Korea University - Department of Materials Science and Engineering ( email )

Seoul, 02841
Korea, Republic of (South Korea)

Byoungchul Hwang (Contact Author)

Seoul National University of Science and Technology - Department of Materials Science and Engineering ( email )

Seoul, 01811
Korea, Republic of (South Korea)

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