Plastic deformation sequence and strain gradient characteristics of hydrogen-induced delayed crack propagation in single-crystalline Fe–Si alloy

Thanh Thuong Huynh; Motomichi Koyama; Yoshimasa Takahashi; Shigeru Hamada; Kaneaki Tsuzaki; Hiroshi Noguchi

doi:10.1016/j.scriptamat.2019.11.012

Plastic deformation sequence and strain gradient characteristics of hydrogen-induced delayed crack propagation in single-crystalline Fe–Si alloy

Thanh Thuong Huynh, Motomichi Koyama, Yoshimasa Takahashi, Shigeru Hamada, Kaneaki Tsuzaki, Hiroshi Noguchi

Strength of materials

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

4 Citations (Scopus)

Abstract

Microscopic features of hydrogen-induced delayed crack propagation in a thin sheet of single-crystalline Fe-3wt%Si alloy were investigated. The crack tip plastic deformation associated with the effect of hydrogen during the crack propagation leaves three adjacent regions where different plastic strain gradients and dislocation densities are observed. These regions revealed the effects of plastic deformation and hydrogen-dislocations interaction around the crack tip on the rate-limiting process of hydrogen-induced delayed crack propagation in thin specimens.

Original language	English
Pages (from-to)	99-103
Number of pages	5
Journal	Scripta Materialia
Volume	178
DOIs	https://doi.org/10.1016/j.scriptamat.2019.11.012
Publication status	Published - Mar 15 2020

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2019.11.012

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Plastic deformation sequence and strain gradient characteristics of hydrogen-induced delayed crack propagation in single-crystalline Fe–Si alloy. / Huynh, Thanh Thuong; Koyama, Motomichi; Takahashi, Yoshimasa; Hamada, Shigeru; Tsuzaki, Kaneaki; Noguchi, Hiroshi.

In: Scripta Materialia, Vol. 178, 15.03.2020, p. 99-103.

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

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abstract = "Microscopic features of hydrogen-induced delayed crack propagation in a thin sheet of single-crystalline Fe-3wt%Si alloy were investigated. The crack tip plastic deformation associated with the effect of hydrogen during the crack propagation leaves three adjacent regions where different plastic strain gradients and dislocation densities are observed. These regions revealed the effects of plastic deformation and hydrogen-dislocations interaction around the crack tip on the rate-limiting process of hydrogen-induced delayed crack propagation in thin specimens.",

author = "Huynh, {Thanh Thuong} and Motomichi Koyama and Yoshimasa Takahashi and Shigeru Hamada and Kaneaki Tsuzaki and Hiroshi Noguchi",

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AU - Huynh, Thanh Thuong

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AU - Takahashi, Yoshimasa

AU - Hamada, Shigeru

AU - Tsuzaki, Kaneaki

AU - Noguchi, Hiroshi

N1 - Funding Information: This work was financially supported by JSPS KAKENHI ( JP16H06365 ) and T.T.H. was funded by the Can Tho University Improvement Project VN14-P6, supported by a Japanese ODA loan. Publisher Copyright: © 2019 Acta Materialia Inc.

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N2 - Microscopic features of hydrogen-induced delayed crack propagation in a thin sheet of single-crystalline Fe-3wt%Si alloy were investigated. The crack tip plastic deformation associated with the effect of hydrogen during the crack propagation leaves three adjacent regions where different plastic strain gradients and dislocation densities are observed. These regions revealed the effects of plastic deformation and hydrogen-dislocations interaction around the crack tip on the rate-limiting process of hydrogen-induced delayed crack propagation in thin specimens.

AB - Microscopic features of hydrogen-induced delayed crack propagation in a thin sheet of single-crystalline Fe-3wt%Si alloy were investigated. The crack tip plastic deformation associated with the effect of hydrogen during the crack propagation leaves three adjacent regions where different plastic strain gradients and dislocation densities are observed. These regions revealed the effects of plastic deformation and hydrogen-dislocations interaction around the crack tip on the rate-limiting process of hydrogen-induced delayed crack propagation in thin specimens.

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Plastic deformation sequence and strain gradient characteristics of hydrogen-induced delayed crack propagation in single-crystalline Fe–Si alloy

Abstract

All Science Journal Classification (ASJC) codes

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