Advances in friction stir welding of steel: Project HILDA

Athanasios Toumpis, Alexander Galloway, Stephen R. Cater, Daniel Micallef, Duncan Camilleri, Nicolas Poletz, Larbi Arbaoui

Research output: Contribution to conferencePaper

Abstract

A microstructure and property evaluation of friction stir welded DH36 6mm plate has been undertaken. The study examined a wide range of process parameters and, from this, a process parameter envelope has been developed and an initial process parameter set established that gives good welding properties. Thermo-mechanical deformation studies were developed to generate flow stress regimes over a range of stain rates and temperatures and these data will support the on-going local numerical modelling development. A preliminary thermo-fluid model has been developed to predict temperature and material flow during the FSW of steel grade DH36. In this model, materials are considered as highly viscous incompressible fluid. The welded material is flowing around the rotating tool thanks to the modelling of the friction at tool/workpiece interface. In parallel, a global numerical model is being developed to predict the inherent residual stresses and distortion of FSW butt welded assemblies often in excess of 6m long plate.
LanguageEnglish
Number of pages10
Publication statusPublished - 14 Apr 2014
EventTransport Research Arena (TRA2014) - CNIT, La Défense , Paris, France
Duration: 14 Apr 201417 Apr 2014

Conference

ConferenceTransport Research Arena (TRA2014)
CountryFrance
CityParis
Period14/04/1417/04/14

Fingerprint

Friction stir welding
Steel
Friction
Fluids
Plastic flow
Numerical models
Residual stresses
Welding
Coloring Agents
Temperature
Microstructure

Keywords

  • friction stir welding
  • tensile testing
  • low alloy steel
  • flow stress
  • thermo-fluid model
  • Eulerian formulation
  • friction condition
  • numerical techniques
  • thermo-elastoplastic models

Cite this

Toumpis, A., Galloway, A., Cater, S. R., Micallef, D., Camilleri, D., Poletz, N., & Arbaoui, L. (2014). Advances in friction stir welding of steel: Project HILDA. Paper presented at Transport Research Arena (TRA2014), Paris, France.
Toumpis, Athanasios ; Galloway, Alexander ; Cater, Stephen R. ; Micallef, Daniel ; Camilleri, Duncan ; Poletz, Nicolas ; Arbaoui, Larbi. / Advances in friction stir welding of steel : Project HILDA. Paper presented at Transport Research Arena (TRA2014), Paris, France.10 p.
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abstract = "A microstructure and property evaluation of friction stir welded DH36 6mm plate has been undertaken. The study examined a wide range of process parameters and, from this, a process parameter envelope has been developed and an initial process parameter set established that gives good welding properties. Thermo-mechanical deformation studies were developed to generate flow stress regimes over a range of stain rates and temperatures and these data will support the on-going local numerical modelling development. A preliminary thermo-fluid model has been developed to predict temperature and material flow during the FSW of steel grade DH36. In this model, materials are considered as highly viscous incompressible fluid. The welded material is flowing around the rotating tool thanks to the modelling of the friction at tool/workpiece interface. In parallel, a global numerical model is being developed to predict the inherent residual stresses and distortion of FSW butt welded assemblies often in excess of 6m long plate.",
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author = "Athanasios Toumpis and Alexander Galloway and Cater, {Stephen R.} and Daniel Micallef and Duncan Camilleri and Nicolas Poletz and Larbi Arbaoui",
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language = "English",
note = "Transport Research Arena (TRA2014) ; Conference date: 14-04-2014 Through 17-04-2014",

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Toumpis, A, Galloway, A, Cater, SR, Micallef, D, Camilleri, D, Poletz, N & Arbaoui, L 2014, 'Advances in friction stir welding of steel: Project HILDA' Paper presented at Transport Research Arena (TRA2014), Paris, France, 14/04/14 - 17/04/14, .

Advances in friction stir welding of steel : Project HILDA. / Toumpis, Athanasios; Galloway, Alexander; Cater, Stephen R.; Micallef, Daniel; Camilleri, Duncan; Poletz, Nicolas; Arbaoui, Larbi.

2014. Paper presented at Transport Research Arena (TRA2014), Paris, France.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Advances in friction stir welding of steel

T2 - Project HILDA

AU - Toumpis, Athanasios

AU - Galloway, Alexander

AU - Cater, Stephen R.

AU - Micallef, Daniel

AU - Camilleri, Duncan

AU - Poletz, Nicolas

AU - Arbaoui, Larbi

PY - 2014/4/14

Y1 - 2014/4/14

N2 - A microstructure and property evaluation of friction stir welded DH36 6mm plate has been undertaken. The study examined a wide range of process parameters and, from this, a process parameter envelope has been developed and an initial process parameter set established that gives good welding properties. Thermo-mechanical deformation studies were developed to generate flow stress regimes over a range of stain rates and temperatures and these data will support the on-going local numerical modelling development. A preliminary thermo-fluid model has been developed to predict temperature and material flow during the FSW of steel grade DH36. In this model, materials are considered as highly viscous incompressible fluid. The welded material is flowing around the rotating tool thanks to the modelling of the friction at tool/workpiece interface. In parallel, a global numerical model is being developed to predict the inherent residual stresses and distortion of FSW butt welded assemblies often in excess of 6m long plate.

AB - A microstructure and property evaluation of friction stir welded DH36 6mm plate has been undertaken. The study examined a wide range of process parameters and, from this, a process parameter envelope has been developed and an initial process parameter set established that gives good welding properties. Thermo-mechanical deformation studies were developed to generate flow stress regimes over a range of stain rates and temperatures and these data will support the on-going local numerical modelling development. A preliminary thermo-fluid model has been developed to predict temperature and material flow during the FSW of steel grade DH36. In this model, materials are considered as highly viscous incompressible fluid. The welded material is flowing around the rotating tool thanks to the modelling of the friction at tool/workpiece interface. In parallel, a global numerical model is being developed to predict the inherent residual stresses and distortion of FSW butt welded assemblies often in excess of 6m long plate.

KW - friction stir welding

KW - tensile testing

KW - low alloy steel

KW - flow stress

KW - thermo-fluid model

KW - Eulerian formulation

KW - friction condition

KW - numerical techniques

KW - thermo-elastoplastic models

UR - http://tra2014.sciencesconf.org/

M3 - Paper

ER -

Toumpis A, Galloway A, Cater SR, Micallef D, Camilleri D, Poletz N et al. Advances in friction stir welding of steel: Project HILDA. 2014. Paper presented at Transport Research Arena (TRA2014), Paris, France.