Notch shape dependence of fatigue crack extension in equiatomic CrMnFeCoNi high-entropy alloy

Kai Suzuki; Shigeru Hamada; Motomichi Koyama; Kaneaki Tsuzaki; Hiroshi Noguchi

doi:10.1016/j.ijfatigue.2021.106481

Notch shape dependence of fatigue crack extension in equiatomic CrMnFeCoNi high-entropy alloy

Kai Suzuki, Shigeru Hamada, Motomichi Koyama, Kaneaki Tsuzaki, Hiroshi Noguchi

Materials Design Division

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

2 Citations (Scopus)

Abstract

Fatigue tests were conducted on an equiatomic CrMnFeCoNi high-entropy alloy with three different micro-stress concentration sources. A fatigue crack behavior analysis using a replica of a specimen surface, fractographic analysis in a fracture surface, fatigue crack shape analysis, and strain analysis under the fracture surface were performed. It was found that the fatigue crack extension mode was transited by the severity of the strain concentration from the damage accumulation mode to the plastic deformation mode.

Original language	English
Article number	106481
Journal	International Journal of Fatigue
Volume	153
DOIs	https://doi.org/10.1016/j.ijfatigue.2021.106481
Publication status	Published - 2021 Dec

Keywords

Crack
Fatigue
Fatigue crack extension mode
High-entropy alloy
Notch

ASJC Scopus subject areas

Modelling and Simulation
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.ijfatigue.2021.106481

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title = "Notch shape dependence of fatigue crack extension in equiatomic CrMnFeCoNi high-entropy alloy",

abstract = "Fatigue tests were conducted on an equiatomic CrMnFeCoNi high-entropy alloy with three different micro-stress concentration sources. A fatigue crack behavior analysis using a replica of a specimen surface, fractographic analysis in a fracture surface, fatigue crack shape analysis, and strain analysis under the fracture surface were performed. It was found that the fatigue crack extension mode was transited by the severity of the strain concentration from the damage accumulation mode to the plastic deformation mode.",

keywords = "Crack, Fatigue, Fatigue crack extension mode, High-entropy alloy, Notch",

author = "Kai Suzuki and Shigeru Hamada and Motomichi Koyama and Kaneaki Tsuzaki and Hiroshi Noguchi",

note = "Funding Information: This work was financially supported by JSPS KAKENHI (JP16H06365 and JP17H04956). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

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language = "English",

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T1 - Notch shape dependence of fatigue crack extension in equiatomic CrMnFeCoNi high-entropy alloy

AU - Suzuki, Kai

AU - Hamada, Shigeru

AU - Koyama, Motomichi

AU - Tsuzaki, Kaneaki

AU - Noguchi, Hiroshi

PY - 2021/12

Y1 - 2021/12

N2 - Fatigue tests were conducted on an equiatomic CrMnFeCoNi high-entropy alloy with three different micro-stress concentration sources. A fatigue crack behavior analysis using a replica of a specimen surface, fractographic analysis in a fracture surface, fatigue crack shape analysis, and strain analysis under the fracture surface were performed. It was found that the fatigue crack extension mode was transited by the severity of the strain concentration from the damage accumulation mode to the plastic deformation mode.

AB - Fatigue tests were conducted on an equiatomic CrMnFeCoNi high-entropy alloy with three different micro-stress concentration sources. A fatigue crack behavior analysis using a replica of a specimen surface, fractographic analysis in a fracture surface, fatigue crack shape analysis, and strain analysis under the fracture surface were performed. It was found that the fatigue crack extension mode was transited by the severity of the strain concentration from the damage accumulation mode to the plastic deformation mode.

KW - Crack

KW - Fatigue

KW - Fatigue crack extension mode

KW - High-entropy alloy

KW - Notch

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VL - 153

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106481

ER -

Notch shape dependence of fatigue crack extension in equiatomic CrMnFeCoNi high-entropy alloy

Abstract

Keywords

ASJC Scopus subject areas

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