In situ electrochemical microcantilever bending test: A new insight into hydrogen enhanced cracking

被引：79

作者：

Hajilou, Tarlan ^{[1
]}

Deng, Yun ^{[1
]}

Rogne, Bjorn Rune ^{[1
]}

Kheradmand, Nousha ^{[1
]}

Barnoush, Afrooz ^{[1
]}

机构：

[1] Dept Engn Design & Mat, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway

来源：

SCRIPTA MATERIALIA | 2017年 / 132卷

关键词：

Hydrogen embrittlement; Cathodic protection; Micromechanical testing; Fracture; Steel; DUPLEX STAINLESS-STEEL; MECHANICAL-PROPERTIES; DISLOCATION NUCLEATION; ASSISTED CRACKING; SINGLE-CRYSTALS; GRAIN-BOUNDARY; YIELD-POINT; DEFORMATION; FE-3WT-PERCENT-SI; MICROSTRUCTURE;

D O I：

10.1016/j.scriptamat.2017.01.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single crystalline microcantilevers of Fe-3wt% Si were bent while electrochemically hydrogen (H) charged in situ inside a miniaturized electrochemical cell and are compared with cantilevers bent in air. Yield point decreases, crack initiation and propagation were observed for the cantilevers bent in the presence of H, while notch blunting occurred for the cantilevers bent in air. The results show H enhanced dislocation nucleation and H pinning of dislocation at the crack tip are responsible for embrittlement. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：17 / 21

页数：5

共 43 条

[1] Hydrogen susceptibility of an interstitial equimolar high-entropy alloy revealed by in-situ electrochemical microcantilever bending test
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Barnoush, Afrooz
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 762
[2] Hydrogen-enhanced cracking revealed by in situ micro-cantilever bending test inside environmental scanning electron microscope
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PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2017, 375 (2098):
[3] In-situ micro-cantilever bending test in environmental scanning electron microscope: Real time observation of hydrogen enhanced cracking
Deng, Y.
Hajilou, T.
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[4] In situ micromechanical testing in environmental scanning electron microscope: A new insight into hydrogen-assisted cracking
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