Hydrogen embrittlement behavior of Inconel 718 alloy at room temperature

Xinfeng Li; Jin Zhang; Eiji Akiyama; Qinqin Fu; Qizhen Li

doi:10.1016/j.jmst.2018.10.002

Hydrogen embrittlement behavior of Inconel 718 alloy at room temperature

Xinfeng Li, Jin Zhang, Eiji Akiyama, Qinqin Fu, Qizhen Li

Materials Design Division

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

10 Citations (Scopus)

Abstract

Hydrogen embrittlement of Inconel 718 alloy was investigated. Multi-scale observation technique were employed, comprising slow strain rate tensile tests, scanning electron microscopy and transmission electron microscopy analysis. The results demonstrate that hydrogen charging deteriorates mechanical properties of the alloy. Inconel 718 alloy shows partial Portevin-Le Chatelier (PLC) effect at room temperature when hydrogen charging current density is 220 mA cm⁻² and 590 mA cm⁻². Moreover, plastic deformation features with dislocation cells are detected in hydrogen-induced brittle zone. Thus, it is concluded that dragging effect of hydrogen atoms on dislocations contributes to PLC effect.

Original language	English
Pages (from-to)	499-502
Number of pages	4
Journal	Journal of Materials Science and Technology
Volume	35
Issue number	4
DOIs	https://doi.org/10.1016/j.jmst.2018.10.002
Publication status	Published - 2019 Apr

Keywords

Embrittlement
Hydrogen in metals
Inconel 718 alloy
Portevin-Le Chatelier effect

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics
Metals and Alloys
Materials Chemistry

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10.1016/j.jmst.2018.10.002

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title = "Hydrogen embrittlement behavior of Inconel 718 alloy at room temperature",

abstract = "Hydrogen embrittlement of Inconel 718 alloy was investigated. Multi-scale observation technique were employed, comprising slow strain rate tensile tests, scanning electron microscopy and transmission electron microscopy analysis. The results demonstrate that hydrogen charging deteriorates mechanical properties of the alloy. Inconel 718 alloy shows partial Portevin-Le Chatelier (PLC) effect at room temperature when hydrogen charging current density is 220 mA cm−2 and 590 mA cm−2. Moreover, plastic deformation features with dislocation cells are detected in hydrogen-induced brittle zone. Thus, it is concluded that dragging effect of hydrogen atoms on dislocations contributes to PLC effect.",

keywords = "Embrittlement, Hydrogen in metals, Inconel 718 alloy, Portevin-Le Chatelier effect",

author = "Xinfeng Li and Jin Zhang and Eiji Akiyama and Qinqin Fu and Qizhen Li",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

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doi = "10.1016/j.jmst.2018.10.002",

language = "English",

volume = "35",

pages = "499--502",

journal = "Journal of Materials Science and Technology",

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TY - JOUR

T1 - Hydrogen embrittlement behavior of Inconel 718 alloy at room temperature

AU - Li, Xinfeng

AU - Zhang, Jin

AU - Akiyama, Eiji

AU - Fu, Qinqin

AU - Li, Qizhen

PY - 2019/4

Y1 - 2019/4

N2 - Hydrogen embrittlement of Inconel 718 alloy was investigated. Multi-scale observation technique were employed, comprising slow strain rate tensile tests, scanning electron microscopy and transmission electron microscopy analysis. The results demonstrate that hydrogen charging deteriorates mechanical properties of the alloy. Inconel 718 alloy shows partial Portevin-Le Chatelier (PLC) effect at room temperature when hydrogen charging current density is 220 mA cm−2 and 590 mA cm−2. Moreover, plastic deformation features with dislocation cells are detected in hydrogen-induced brittle zone. Thus, it is concluded that dragging effect of hydrogen atoms on dislocations contributes to PLC effect.

AB - Hydrogen embrittlement of Inconel 718 alloy was investigated. Multi-scale observation technique were employed, comprising slow strain rate tensile tests, scanning electron microscopy and transmission electron microscopy analysis. The results demonstrate that hydrogen charging deteriorates mechanical properties of the alloy. Inconel 718 alloy shows partial Portevin-Le Chatelier (PLC) effect at room temperature when hydrogen charging current density is 220 mA cm−2 and 590 mA cm−2. Moreover, plastic deformation features with dislocation cells are detected in hydrogen-induced brittle zone. Thus, it is concluded that dragging effect of hydrogen atoms on dislocations contributes to PLC effect.

KW - Embrittlement

KW - Hydrogen in metals

KW - Inconel 718 alloy

KW - Portevin-Le Chatelier effect

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JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

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Hydrogen embrittlement behavior of Inconel 718 alloy at room temperature

Abstract

Keywords

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