Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloy

J. L. Huang, J.-C. Gebelin, M. Strangwood, R. C. Reed, N. Warnken

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Hydrogen transport during the welding of titanium alloy Ti–6Al–4V is analysed. A coupled thermodynamic/kinetic treatment is proposed in which the driving force for hydrogen migration is its chemical potential gradient, which is in turn calculated using the Thermo-Calc software package. The model is applied to the case of the electron beam welding of Ti–6Al–4V, for which a simple process model is presented for the temperature evolution expected. There is a thermodynamic driving force for accumulation of hydrogen in the weld pool. However, agreement with the limited amount of experimental data in the literature for the hydrogen field caused by welding indicates that account needs to be taken of the hydrogen degassing from the weld pool.
LanguageEnglish
Pages500-508
Number of pages9
JournalMaterials Science and Technology
Volume28
Issue number4
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

electron beam welding
Electron beam welding
titanium alloys
Titanium alloys
Hydrogen
Thermodynamics
thermodynamics
Kinetics
kinetics
hydrogen
welding
Welding
Welds
potential gradients
degassing
Chemical potential
Degassing
Software packages
computer programs

Keywords

  • hydrogen diffusion
  • titanium welding
  • porosity formation
  • thermodynamic and kinetic modelling

Cite this

Huang, J. L. ; Gebelin, J.-C. ; Strangwood, M. ; Reed, R. C. ; Warnken, N. / Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloy. In: Materials Science and Technology. 2012 ; Vol. 28, No. 4. pp. 500-508.
@article{c7aaa335bd3c44c986fbfa15823b5afb,
title = "Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloy",
abstract = "Hydrogen transport during the welding of titanium alloy Ti–6Al–4V is analysed. A coupled thermodynamic/kinetic treatment is proposed in which the driving force for hydrogen migration is its chemical potential gradient, which is in turn calculated using the Thermo-Calc software package. The model is applied to the case of the electron beam welding of Ti–6Al–4V, for which a simple process model is presented for the temperature evolution expected. There is a thermodynamic driving force for accumulation of hydrogen in the weld pool. However, agreement with the limited amount of experimental data in the literature for the hydrogen field caused by welding indicates that account needs to be taken of the hydrogen degassing from the weld pool.",
keywords = "hydrogen diffusion, titanium welding, porosity formation, thermodynamic and kinetic modelling",
author = "Huang, {J. L.} and J.-C. Gebelin and M. Strangwood and Reed, {R. C.} and N. Warnken",
year = "2012",
doi = "10.1179/1743284711Y.0000000126",
language = "English",
volume = "28",
pages = "500--508",
journal = "Materials Science and Technology",
issn = "0267-0836",
number = "4",

}

Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloy. / Huang, J. L.; Gebelin, J.-C.; Strangwood, M.; Reed, R. C.; Warnken, N.

In: Materials Science and Technology, Vol. 28, No. 4, 2012, p. 500-508.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloy

AU - Huang, J. L.

AU - Gebelin, J.-C.

AU - Strangwood, M.

AU - Reed, R. C.

AU - Warnken, N.

PY - 2012

Y1 - 2012

N2 - Hydrogen transport during the welding of titanium alloy Ti–6Al–4V is analysed. A coupled thermodynamic/kinetic treatment is proposed in which the driving force for hydrogen migration is its chemical potential gradient, which is in turn calculated using the Thermo-Calc software package. The model is applied to the case of the electron beam welding of Ti–6Al–4V, for which a simple process model is presented for the temperature evolution expected. There is a thermodynamic driving force for accumulation of hydrogen in the weld pool. However, agreement with the limited amount of experimental data in the literature for the hydrogen field caused by welding indicates that account needs to be taken of the hydrogen degassing from the weld pool.

AB - Hydrogen transport during the welding of titanium alloy Ti–6Al–4V is analysed. A coupled thermodynamic/kinetic treatment is proposed in which the driving force for hydrogen migration is its chemical potential gradient, which is in turn calculated using the Thermo-Calc software package. The model is applied to the case of the electron beam welding of Ti–6Al–4V, for which a simple process model is presented for the temperature evolution expected. There is a thermodynamic driving force for accumulation of hydrogen in the weld pool. However, agreement with the limited amount of experimental data in the literature for the hydrogen field caused by welding indicates that account needs to be taken of the hydrogen degassing from the weld pool.

KW - hydrogen diffusion

KW - titanium welding

KW - porosity formation

KW - thermodynamic and kinetic modelling

U2 - 10.1179/1743284711Y.0000000126

DO - 10.1179/1743284711Y.0000000126

M3 - Article

VL - 28

SP - 500

EP - 508

JO - Materials Science and Technology

T2 - Materials Science and Technology

JF - Materials Science and Technology

SN - 0267-0836

IS - 4

ER -