Fracture criterion for hydrogen embrittlement of high strength steel

M. Q. Wang, E. Akiyama, K. Tsuzaki

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The notch tensile strength of a boron bearing steel at 1305 MPa has been investigated by means of slow strain rate tests after electrochemical hydrogen charging. Results show that the notch tensile strength of the steel decreased with increasing diffusible hydrogen content and the decrease in the notch tensile strength was more pronounced for specimens at a higher stress concentration factor. Finite element analysis results show that the dependence of the notch tensile strength on stress concentration factor cannot be accounted for by the local peak stress and local peak hydrogen concentration; however, the equivalent plastic strain at the notch root at an applied stress equal to the notch tensile strength was independent of stress concentration factor. The equivalent plastic strain at the notch root can be used as a fracture criterion for hydrogen embrittlement of the steel.

Original languageEnglish
Pages (from-to)167-172
Number of pages6
JournalMaterials Science and Technology
Volume22
Issue number2
DOIs
Publication statusPublished - Feb 1 2006
Externally publishedYes

Fingerprint

hydrogen embrittlement
Hydrogen embrittlement
high strength steels
notches
High strength steel
Tensile strength
Steel
tensile strength
Stress concentration
Hydrogen
stress concentration
Plastic deformation
Bearings (structural)
steels
Boron
hydrogen
plastics
Strain rate
Finite element method
strain rate

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Fracture criterion for hydrogen embrittlement of high strength steel. / Wang, M. Q.; Akiyama, E.; Tsuzaki, K.

In: Materials Science and Technology, Vol. 22, No. 2, 01.02.2006, p. 167-172.

Research output: Contribution to journalArticle

@article{118f77c24fc743ffb05088037fb65991,
title = "Fracture criterion for hydrogen embrittlement of high strength steel",
abstract = "The notch tensile strength of a boron bearing steel at 1305 MPa has been investigated by means of slow strain rate tests after electrochemical hydrogen charging. Results show that the notch tensile strength of the steel decreased with increasing diffusible hydrogen content and the decrease in the notch tensile strength was more pronounced for specimens at a higher stress concentration factor. Finite element analysis results show that the dependence of the notch tensile strength on stress concentration factor cannot be accounted for by the local peak stress and local peak hydrogen concentration; however, the equivalent plastic strain at the notch root at an applied stress equal to the notch tensile strength was independent of stress concentration factor. The equivalent plastic strain at the notch root can be used as a fracture criterion for hydrogen embrittlement of the steel.",
author = "Wang, {M. Q.} and E. Akiyama and K. Tsuzaki",
year = "2006",
month = "2",
day = "1",
doi = "10.1179/174328406X86191",
language = "English",
volume = "22",
pages = "167--172",
journal = "Materials Science and Technology",
issn = "0267-0836",
publisher = "Maney Publishing",
number = "2",

}

TY - JOUR

T1 - Fracture criterion for hydrogen embrittlement of high strength steel

AU - Wang, M. Q.

AU - Akiyama, E.

AU - Tsuzaki, K.

PY - 2006/2/1

Y1 - 2006/2/1

N2 - The notch tensile strength of a boron bearing steel at 1305 MPa has been investigated by means of slow strain rate tests after electrochemical hydrogen charging. Results show that the notch tensile strength of the steel decreased with increasing diffusible hydrogen content and the decrease in the notch tensile strength was more pronounced for specimens at a higher stress concentration factor. Finite element analysis results show that the dependence of the notch tensile strength on stress concentration factor cannot be accounted for by the local peak stress and local peak hydrogen concentration; however, the equivalent plastic strain at the notch root at an applied stress equal to the notch tensile strength was independent of stress concentration factor. The equivalent plastic strain at the notch root can be used as a fracture criterion for hydrogen embrittlement of the steel.

AB - The notch tensile strength of a boron bearing steel at 1305 MPa has been investigated by means of slow strain rate tests after electrochemical hydrogen charging. Results show that the notch tensile strength of the steel decreased with increasing diffusible hydrogen content and the decrease in the notch tensile strength was more pronounced for specimens at a higher stress concentration factor. Finite element analysis results show that the dependence of the notch tensile strength on stress concentration factor cannot be accounted for by the local peak stress and local peak hydrogen concentration; however, the equivalent plastic strain at the notch root at an applied stress equal to the notch tensile strength was independent of stress concentration factor. The equivalent plastic strain at the notch root can be used as a fracture criterion for hydrogen embrittlement of the steel.

UR - http://www.scopus.com/inward/record.url?scp=33745386444&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745386444&partnerID=8YFLogxK

U2 - 10.1179/174328406X86191

DO - 10.1179/174328406X86191

M3 - Article

AN - SCOPUS:33745386444

VL - 22

SP - 167

EP - 172

JO - Materials Science and Technology

JF - Materials Science and Technology

SN - 0267-0836

IS - 2

ER -