Hydrogen-induced delayed fracture of a 1180 MPa martensitic advanced high-strength steel under U-bend loading

Title: Hydrogen-induced delayed fracture of a 1180 MPa martensitic advanced high-strength steel under U-bend loading
Creator: Li, Huixing; Venezuela, Jeffrey; Zhou, Qingjun; Luzin, Vladimir; Yan, Ming; Shi, Zhiming; Knibbe, Ruth; Zhang, Mingxing; Dong, Futao; Dargusch, Matthew S.; Atrens, Andrej
Relation: Materials Today Communications Vol. 26, Issue March 2021, no. 101887
Publisher Link: http://dx.doi.org/10.1016/j.mtcomm.2020.101887
Publisher: Elsevier
Resource Type: journal article
Date: 2021
Description: Hydrogen-induced delayed failure (HIDF) of an 1180 MPa martensitic advanced high-strength steel (MS-AHSS) was studied using U-bend tests. HIDF susceptibility was increased by increasing stress, plastic strain and hydrogen content. Fracture initiated in the region of high tensile stress at the apex of the U-bend specimen. Hydrogen-induced fracture propagated in two stages, coinciding with the two stress regions of the specimen. The hydrogen content of the U-bend specimen increased with plastic strain and hydrogen fugacity. Delayed fracture is possible for specimens (and components) that contain substantial damage due to plastic strain and are subjected to a substantial stress.
Subject: advanced high-strength steel; martensite; hydrogen embrittlement; U-bend test
Identifier: http://hdl.handle.net/1959.13/1433382
Identifier: uon:39236
Identifier: ISSN:2352-4928
Language: eng
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