The Effect of Hydrogen on Fluctuation Embrittlement of Aluminum

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The Effect of Hydrogen on Fluctuation Embrittlement of Aluminum. / Indeitsev, D. A.

In: Technical Physics Letters, Vol. 45, No. 9, 01.09.2019, p. 882-885.

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

BibTeX

@article{5b99832d077349c4b751d727c7a96436,

title = "The Effect of Hydrogen on Fluctuation Embrittlement of Aluminum",

abstract = "Abstract: In this paper, we describe the main processes occurring during the generation of vacancies in aluminum in the presence of hydrogen by ab initio methods using the SCAN functional. Hydrogen is shown to reduce the generation energy of vacancies from 2.8 to 0.8 eV. In this case, the eight hydrogen atoms located in the tetrahedral lattice voids around single aluminum atom greatly facilitate its movement to the interstitial site. The dependence of the activation energy of hydrogen embrittlement of aluminum on the hydrogen concentration in aluminum and temperature is calculated based on the kinetic strength concept. Hydrogen is shown to reduce the time of aluminum destruction only if its mole fraction in aluminum is greater than the critical level (~ 3 × 10–4 at T = 293 K).",

keywords = "activation energy of destruction, density functional method, hydrogen embrittlement, vacancies",

author = "Indeitsev, {D. A.}",

year = "2019",

month = sep,

day = "1",

doi = "10.1134/S1063785019090074",

language = "English",

volume = "45",

pages = "882--885",

journal = "Technical Physics Letters",

issn = "1063-7850",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "9",

}

RIS

TY - JOUR

T1 - The Effect of Hydrogen on Fluctuation Embrittlement of Aluminum

AU - Indeitsev, D. A.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Abstract: In this paper, we describe the main processes occurring during the generation of vacancies in aluminum in the presence of hydrogen by ab initio methods using the SCAN functional. Hydrogen is shown to reduce the generation energy of vacancies from 2.8 to 0.8 eV. In this case, the eight hydrogen atoms located in the tetrahedral lattice voids around single aluminum atom greatly facilitate its movement to the interstitial site. The dependence of the activation energy of hydrogen embrittlement of aluminum on the hydrogen concentration in aluminum and temperature is calculated based on the kinetic strength concept. Hydrogen is shown to reduce the time of aluminum destruction only if its mole fraction in aluminum is greater than the critical level (~ 3 × 10–4 at T = 293 K).

AB - Abstract: In this paper, we describe the main processes occurring during the generation of vacancies in aluminum in the presence of hydrogen by ab initio methods using the SCAN functional. Hydrogen is shown to reduce the generation energy of vacancies from 2.8 to 0.8 eV. In this case, the eight hydrogen atoms located in the tetrahedral lattice voids around single aluminum atom greatly facilitate its movement to the interstitial site. The dependence of the activation energy of hydrogen embrittlement of aluminum on the hydrogen concentration in aluminum and temperature is calculated based on the kinetic strength concept. Hydrogen is shown to reduce the time of aluminum destruction only if its mole fraction in aluminum is greater than the critical level (~ 3 × 10–4 at T = 293 K).

KW - activation energy of destruction

KW - density functional method

KW - hydrogen embrittlement

KW - vacancies

UR - http://www.scopus.com/inward/record.url?scp=85073255221&partnerID=8YFLogxK

U2 - 10.1134/S1063785019090074

DO - 10.1134/S1063785019090074

M3 - Article

AN - SCOPUS:85073255221

VL - 45

SP - 882

EP - 885

JO - Technical Physics Letters

JF - Technical Physics Letters

SN - 1063-7850

IS - 9

ER -

ID: 75068633