Correlation between the hydrogen chemical potential and pop-in load during in situ electrochemical nanoindentation

Afrooz Barnoush; Nousha Kheradmand; Tarlan Hajilou

doi:10.1016/j.scriptamat.2015.06.021

Correlation between the hydrogen chemical potential and pop-in load during in situ electrochemical nanoindentation

Afrooz Barnoush^*, Nousha Kheradmand, Tarlan Hajilou

^*Corresponding author for this work

Department of Engineering Design and Materials

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

30 Citations (Scopus)

Abstract

The variation in the pop-in load during electrochemical nanoindentation of Fe 3 wt.% Si alloy at different cathodic polarizations was measured. It is clearly shown that a higher hydrogen chemical potential results in a lower pop-in load, which is an indication of easier dislocation nucleation below the tip. Classic dislocation theory and defactant model are used to analyze the data and calculate the excess hydrogen on the dislocation line at different electrochemical potentials.

Original language	English
Article number	10697
Pages (from-to)	76-79
Number of pages	4
Journal	Scripta Materialia
Volume	108
DOIs	https://doi.org/10.1016/j.scriptamat.2015.06.021
Publication status	Published - 1 Nov 2015
Externally published	Yes

Keywords

Dislocation nucleation
Electrochemical
Hydrogen embrittlement
Nanoindentation
Steel

Access to Document

10.1016/j.scriptamat.2015.06.021

Cite this

@article{a35166e8a7db45c19887415c1f12537e,

title = "Correlation between the hydrogen chemical potential and pop-in load during in situ electrochemical nanoindentation",

abstract = "The variation in the pop-in load during electrochemical nanoindentation of Fe 3 wt.% Si alloy at different cathodic polarizations was measured. It is clearly shown that a higher hydrogen chemical potential results in a lower pop-in load, which is an indication of easier dislocation nucleation below the tip. Classic dislocation theory and defactant model are used to analyze the data and calculate the excess hydrogen on the dislocation line at different electrochemical potentials.",

keywords = "Dislocation nucleation, Electrochemical, Hydrogen embrittlement, Nanoindentation, Steel",

author = "Afrooz Barnoush and Nousha Kheradmand and Tarlan Hajilou",

note = "Publisher Copyright: {\textcopyright} 2015 Acta Materialia Inc.",

year = "2015",

month = nov,

day = "1",

doi = "10.1016/j.scriptamat.2015.06.021",

language = "English",

volume = "108",

pages = "76--79",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Correlation between the hydrogen chemical potential and pop-in load during in situ electrochemical nanoindentation

AU - Barnoush, Afrooz

AU - Kheradmand, Nousha

AU - Hajilou, Tarlan

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The variation in the pop-in load during electrochemical nanoindentation of Fe 3 wt.% Si alloy at different cathodic polarizations was measured. It is clearly shown that a higher hydrogen chemical potential results in a lower pop-in load, which is an indication of easier dislocation nucleation below the tip. Classic dislocation theory and defactant model are used to analyze the data and calculate the excess hydrogen on the dislocation line at different electrochemical potentials.

AB - The variation in the pop-in load during electrochemical nanoindentation of Fe 3 wt.% Si alloy at different cathodic polarizations was measured. It is clearly shown that a higher hydrogen chemical potential results in a lower pop-in load, which is an indication of easier dislocation nucleation below the tip. Classic dislocation theory and defactant model are used to analyze the data and calculate the excess hydrogen on the dislocation line at different electrochemical potentials.

KW - Dislocation nucleation

KW - Electrochemical

KW - Hydrogen embrittlement

KW - Nanoindentation

KW - Steel

UR - http://www.scopus.com/inward/record.url?scp=84939773562&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2015.06.021

DO - 10.1016/j.scriptamat.2015.06.021

M3 - Article

AN - SCOPUS:84939773562

SN - 1359-6462

VL - 108

SP - 76

EP - 79

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 10697

ER -

Correlation between the hydrogen chemical potential and pop-in load during in situ electrochemical nanoindentation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this