Download file (3.66MB)
Download as zip (3.62MB)

コレクション

引用

説明:

Acceleration of fatigue crack growth in steels under hydrogenating environments (hydrogen-assisted fatigue crack growth, HA-FCG) is of critical concern for the defect-tolerant engineering design of pressure vessels and pipelines for the storage and transportation of gaseous hydrogen. This overview provides a state-of-the-art understanding of the HA-FCG in ferrite-based materials with a primary basis on the authors’ recent works. The influences of gas pressure, temperature, stress intensity, and loading frequency are summarized, focusing on two representative failure modes: intergranular (IG); and cleavage-involving transgranular (CIT). The latter one has conventionally been termed quasi-cleavage (QC). Crack path crystallography and deformation microstructures beneath these IG and CIT are provided as supplemental information to figure out the underlying fracture mechanisms. Comprehensive models accounting for the HA-FCG in ferrite are finally established. Our models construct new bridges between microscale fracture behaviors and macroscale dependencies of the FCG acceleration on environmental and mechanistic variables.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Hydrogen embrittlement, Ferritic steel, Fatigue crack growth, Crack path, Deformation microstructure

刊行年月日: 2025-01-18

出版者: Elsevier BV

掲載誌:

• International Journal of Hydrogen Energy (ISSN: 03603199) vol. 102 p. 1507-1529

研究助成金:

• Japan Society for the Promotion of Science 19K23503

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.ijhydene.2025.01.136

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-01-20 16:30:23 +0900

MDRでの公開時刻: 2025-01-20 16:30:24 +0900