Experimental and crystal plasticity study on hydrogen-assisted fatigue crack growth behavior of IN625 superalloy

Kaidi Li; Bin Tang; Wenyuan Zhang; Heng Zhang; Jinhua Dai; Mengqi Zhang; Zhenshun Zhang; Xichuan Cao; Jiangkun Fan; Jinshan Li

doi:10.1016/j.corsci.2024.112480

Experimental and crystal plasticity study on hydrogen-assisted fatigue crack growth behavior of IN625 superalloy

Kaidi Li, Bin Tang, Wenyuan Zhang, Heng Zhang, Jinhua Dai, Mengqi Zhang, Zhenshun Zhang, Xichuan Cao, Jiangkun Fan, Jinshan Li

School of Materials Sience and Engineering

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

Abstract

The fatigue crack growth (FCG) behavior of IN625 alloy was studied by experimental methods and crystal plasticity simulations. Based on the experimental FCG rate curves, it is evident that hydrogen significantly accelerates FCG, and calculations show that this acceleration factor reaches a maximum of 2.41 times at 1 Hz. Hydrogen results in smaller plastic deformation zones compared to hydrogen-free samples. The interaction between hydrogen and dislocations leads to the nucleation of micro-voids along the slip planes, promoting the hydrogen-assisted cracking process. Lower loading frequencies results in finer fatigue striations and more pronounced hydrogen embrittlement features on the fracture surface.

Original language	English
Article number	112480
Journal	Corrosion Science
Volume	240
DOIs	https://doi.org/10.1016/j.corsci.2024.112480
State	Published - Nov 2024

Keywords

Crystal plasticity
Fatigue crack growth
Fatigue striations
Hydrogen embrittlement
IN625 alloy

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10.1016/j.corsci.2024.112480

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title = "Experimental and crystal plasticity study on hydrogen-assisted fatigue crack growth behavior of IN625 superalloy",

abstract = "The fatigue crack growth (FCG) behavior of IN625 alloy was studied by experimental methods and crystal plasticity simulations. Based on the experimental FCG rate curves, it is evident that hydrogen significantly accelerates FCG, and calculations show that this acceleration factor reaches a maximum of 2.41 times at 1 Hz. Hydrogen results in smaller plastic deformation zones compared to hydrogen-free samples. The interaction between hydrogen and dislocations leads to the nucleation of micro-voids along the slip planes, promoting the hydrogen-assisted cracking process. Lower loading frequencies results in finer fatigue striations and more pronounced hydrogen embrittlement features on the fracture surface.",

keywords = "Crystal plasticity, Fatigue crack growth, Fatigue striations, Hydrogen embrittlement, IN625 alloy",

author = "Kaidi Li and Bin Tang and Wenyuan Zhang and Heng Zhang and Jinhua Dai and Mengqi Zhang and Zhenshun Zhang and Xichuan Cao and Jiangkun Fan and Jinshan Li",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Ltd",

year = "2024",

month = nov,

doi = "10.1016/j.corsci.2024.112480",

language = "英语",

volume = "240",

journal = "Corrosion Science",

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TY - JOUR

T1 - Experimental and crystal plasticity study on hydrogen-assisted fatigue crack growth behavior of IN625 superalloy

AU - Li, Kaidi

AU - Tang, Bin

AU - Zhang, Wenyuan

AU - Zhang, Heng

AU - Dai, Jinhua

AU - Zhang, Mengqi

AU - Zhang, Zhenshun

AU - Cao, Xichuan

AU - Fan, Jiangkun

AU - Li, Jinshan

PY - 2024/11

Y1 - 2024/11

N2 - The fatigue crack growth (FCG) behavior of IN625 alloy was studied by experimental methods and crystal plasticity simulations. Based on the experimental FCG rate curves, it is evident that hydrogen significantly accelerates FCG, and calculations show that this acceleration factor reaches a maximum of 2.41 times at 1 Hz. Hydrogen results in smaller plastic deformation zones compared to hydrogen-free samples. The interaction between hydrogen and dislocations leads to the nucleation of micro-voids along the slip planes, promoting the hydrogen-assisted cracking process. Lower loading frequencies results in finer fatigue striations and more pronounced hydrogen embrittlement features on the fracture surface.

AB - The fatigue crack growth (FCG) behavior of IN625 alloy was studied by experimental methods and crystal plasticity simulations. Based on the experimental FCG rate curves, it is evident that hydrogen significantly accelerates FCG, and calculations show that this acceleration factor reaches a maximum of 2.41 times at 1 Hz. Hydrogen results in smaller plastic deformation zones compared to hydrogen-free samples. The interaction between hydrogen and dislocations leads to the nucleation of micro-voids along the slip planes, promoting the hydrogen-assisted cracking process. Lower loading frequencies results in finer fatigue striations and more pronounced hydrogen embrittlement features on the fracture surface.

KW - Crystal plasticity

KW - Fatigue crack growth

KW - Fatigue striations

KW - Hydrogen embrittlement

KW - IN625 alloy

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U2 - 10.1016/j.corsci.2024.112480

DO - 10.1016/j.corsci.2024.112480

M3 - 文章

AN - SCOPUS:85205237771

SN - 0010-938X

VL - 240

JO - Corrosion Science

JF - Corrosion Science

M1 - 112480

ER -

Experimental and crystal plasticity study on hydrogen-assisted fatigue crack growth behavior of IN625 superalloy

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