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Metals
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Review of Hydrogen Embrittlement in Metals
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Review of Hydrogen Embrittlement in Metals

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 3871

Special Issue Editor

Prof. Dr. Du Fengshan

E-Mail Website
Guest Editor
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
Interests: hydrogen embrittlement; corrosion; cast-rolling process; composite

Special Issue Information

Dear Colleagues,

The problem of hydrogen embrittlement is a quite serious phenomenon for metals. During the process of preparation, processing and service, the mechanical properties and corrosion resistance of materials are reduced due to the absorption of hydrogen. The harm of hydrogen to materials involves a wide range of fields, such as shipping, petrochemical, aerospace, metallurgy, and other industrial fields, especially in the production and use of large parts. The hazards of hydrogen to metals include hydrogen-induced cracking, high-temperature hydrogen corrosion, hydride and hydrogen-to-martensitic transformation etc. At present, the research on hydrogen embrittlement has begun to form a system, but the interaction mechanism of the complex microstructure of metal materials with hydrogen and the hydrogen-induced failure under the coupling of heat and force are still unknown.

Regarding the hydrogen embrittlement of metal materials, all kinds of articles are welcome. Articles including but not limited to the following topics are welcomed.

  • New mechanisms, new theories, new phenomena of hydrogen embrittlement of steel or light alloy.
  • Researches and development of hydrogen removal process in metal.
  • The interaction between hydrogen, fatigue and crack growth.
  • Action laws of other hydrogen-induced failure forms.
  • Other corrosion issues related to hydrogen.
  • Fatigue, fracture and failure are also welcome.

Prof. Dr. Du Fengshan
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Hydrogen embrittlement
  • Microstructure
  • Corrosion
  • Fracture
  • Characterization

Published Papers (2 papers)

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Research

17 pages, 10095 KiB  
Article
Study on the Effect of Microstructure Gradients Caused by Heat Gradients on Hydrogen Embrittlement Sensitivity in Heavy Forgings
by Lingxiao Li, Jiyan Liu, Yuhao Wang, Guozhu Zhang and Fengshan Du
Metals 2022, 12(4), 610; https://doi.org/10.3390/met12040610 - 01 Apr 2022
Viewed by 1496
Abstract
The hydrogen embrittlement problem of alloy steel heavy forgings not only has the common properties of general hydrogen embrittlement, but also has the characteristics brought by its scale characteristics. The research of hydrogen embrittlement, combined with its characteristics and commonness, is of vital [...] Read more.
The hydrogen embrittlement problem of alloy steel heavy forgings not only has the common properties of general hydrogen embrittlement, but also has the characteristics brought by its scale characteristics. The research of hydrogen embrittlement, combined with its characteristics and commonness, is of vital importance for the service safety of engineering structures. The temperature field and microstructure distribution in the machining process were investigated through the simulation of a finite element. On this basis, the physical simulation experiments were carried out to obtain the microstructure of heavy forgings in radial directions. The hydrogen embrittlement sensitivity was characterized by electrochemical hydrogen charging and slow strain rate tests (SSRT). The microstructure and fracture morphology of the samples were characterized to explore the law and mechanism of hydrogen embrittlement sensitivity gradient distribution along the axial direction. It is helpful to understand the hydrogen embrittlement of heavy forgings in order to guide engineering practice. Full article
(This article belongs to the Special Issue Review of Hydrogen Embrittlement in Metals)
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14 pages, 17378 KiB  
Article
The Effect of Symmetrically Tilt Grain Boundary of Aluminum on Hydrogen Diffusion
by Yuhao Wang, Haijun Wang, Lingxiao Li, Jiyan Liu, Pei Zhao and Zhiqiang Xu
Metals 2022, 12(2), 345; https://doi.org/10.3390/met12020345 - 16 Feb 2022
Cited by 1 | Viewed by 1802
Abstract
High-strength aluminum alloys are widely used in industry. Hydrogen embrittlement greatly reduces the performance and service safety of aluminum alloys. The hydrogen traps in alumi-num profoundly affect the hydrogen embrittlement of aluminum. Here, we took a coinci-dence-site lattice (CSL) symmetrically tilted grain boundary [...] Read more.
High-strength aluminum alloys are widely used in industry. Hydrogen embrittlement greatly reduces the performance and service safety of aluminum alloys. The hydrogen traps in alumi-num profoundly affect the hydrogen embrittlement of aluminum. Here, we took a coinci-dence-site lattice (CSL) symmetrically tilted grain boundary (STGB) Σ5(120)[001] as an example to carry out molecular dynamics (MD) simulations of hydrogen diffusion in aluminum at dif-ferent temperatures, and to obtain results and rules consistent with the experiment. At 700 K, three groups of MD simulations with concentrations of 0.5, 2.5 and 5 atomic % hydrogen (at. % H) were carried out for STGB models at different angles. By analyzing the simulation results and the MSD curves of hydrogen atoms, we found that, in the low hydrogen concentration of STGB models, the grain boundaries captured hydrogen atoms and hindered their movement. In high-hydrogen-concentration models, the diffusion rate of hydrogen atoms was not affected by the grain boundaries. The analysis of the simulation results showed that the diffusion of hydro-gen atoms at the grain boundary is anisotropic. Full article
(This article belongs to the Special Issue Review of Hydrogen Embrittlement in Metals)
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