Dissimilar material lap joints by friction stir welding of steel and titanium sheets: Process modeling

Buffa, Gianluca; Ducato, Antonino; Fratini, Livan
May 2013
AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p491
Academic Journal
In the paper a continuum based FEM model for Friction Stir Welding of different material lap joint made out of thin stainless steel and titanium sheets is proposed. The simulation campaign was made out using the 3D Lagrangian implicit code DEFORM{trade mark, serif} by means of a rigid-visco-plastic approach. The model, already set up and tuned for FSW process of similar materials and geometrical configurations takes into account the different mechanical and thermal behavior of the two materials and the microstructural evolution of the considered titanium alloy in the same joint. Additionally, it is able to predict temperature, phase, strain and strain rate distributions and evolution at the varying of the main process variables. The phase evolution models take into account only the main phases called Alpha, Beta and Alpha+Baeta so that, at the end of the simulation, the complete phase distribution in the welded zone.


Related Articles

  • Numerical Analysis of Friction Stir Welding Process.  // Journal of Materials Engineering & Performance;Oct2013, Vol. 22 Issue 10, p2921 

    The article presents numerical analysis of friction stir welding (FSW) process, which is a solid-state joining process that joins two faying surfaces. It mentions the DEFORM, a commercial nonlinear finite element (FE) package used to highlight the temperature, strain, and recrystallization...

  • Fatigue life prediction of friction stir spot welds based on cyclic strain range with hardness distribution and finite element analysis. Rash Ahmadi, Samrand; Hassanifard, Soran; Mohammad Pour, Masoud // Acta Mechanica;Apr2012, Vol. 223 Issue 4, p829 

    The main aim of the present study is to investigate the fatigue behavior of single friction stir spot welds (FSSW) using strain-based modified Morrow's damage equation. The correlation between microhardness, cyclic material constants, and mechanical strength of different zones around the FSSW...

  • Thermo-mechanical finite element model of friction stir welding of dissimilar alloys. Al-Badour, Fadi; Merah, Nesar; Shuaib, Abdelrahman; Bazoune, Abdelaziz // International Journal of Advanced Manufacturing Technology;May2014, Vol. 72 Issue 5-8, p607 

    A thermo-mechanical finite element model is developed based on Coupled Eulerian Lagrangian method to simulate the friction stir welding of dissimilar Al6061-T6 and Al5083-O aluminum alloys using different tool pin profiles. The model is validated using published measured temperatures and weld...

  • Calibration of 3D ALE Finite Element Model from Experiments on Friction Stir Welding of Lap Joints. Fourment, Lionel; Gastebois, Sabrina; Dubourg, Laurent // AIP Conference Proceedings;2016, Vol. 1769 Issue 1, p1 

    In order to support the design of such a complex process like Friction Stir Welding (FSW) for the aeronautic industry, numerical simulation software requires (1) developing an efficient and accurate Finite Element (F.E.) formulation that allows predicting welding defects, (2) properly modeling...

  • Comparison of ALE finite element method and adaptive smoothed finite element method for the numerical simulation of friction stir welding. van der Stelt, A. A.; Bor, T. C.; Geijselaers, H. J. M.; Quak, W.; Akkerman, R.; Huétink, J. // AIP Conference Proceedings;5/4/2011, Vol. 1353 Issue 1, p1290 

    In this paper, the material flow around the pin during friction stir welding (FSW) is simulated using a 2D plane strain model. A pin rotates without translation in a disc with elasto-viscoplastic material properties and the outer boundary of the disc is clamped. Two numerical methods are used to...

  • Full-Field Strain Measurement On Titanium Welds And Local Elasto-Plastic Identification With The Virtual Fields Method. Tattoli, F.; Pierron, F.; Rotinat, R.; Casavola, C.; Pappalettere, C. // AIP Conference Proceedings;1/17/2011, Vol. 1315 Issue 1, p860 

    One of the main problems in welding is the microstructural transformation within the area affected by the thermal history. The resulting heterogeneous microstructure within the weld nugget and the heat affected zones is often associated with changes in local material properties. The present work...

  • Effects of Deformation-Induced Constraint on High-Cycle Fatigue in Ti Alloys with a Duplex Microstructure. Chan, K. S.; Lee, Y.-D. // Metallurgical & Materials Transactions. Part A;Jul2008, Vol. 39 Issue 7, p1665 

    The effects of the deformation behaviors of individual phases in Ti alloys with a duplex microstructure containing a mixture of primary α grains and lamellar α + β colonies have been analyzed by applying the finite-element method (FEM) to the relevant microstructure. The softer primary...

  • Theoretical and experimental investigation into friction stir welding of AA 5086. Aval, H.; Serajzadeh, S.; Kokabi, A. // International Journal of Advanced Manufacturing Technology;Feb2011, Vol. 52 Issue 5-8, p531 

    This research investigates the relationship between the microstructures of thermomechanically affected zone (TMAZ) and heat input in friction stir welding (FSW) of 5086 aluminum alloy. First, welding heat input has been predicted using a three-dimensional finite element analysis; then, welding...

  • Thermo-mechanical and microstructural issues in dissimilar friction stir welding of AA5086-AA6061. Aval, H. Jamshidi; Serajzadeh, S.; Kokabi, A. H. // Journal of Materials Science;May2011, Vol. 46 Issue 10, p3258 

    In this research, thermo-mechanical behavior and microstructural events in dissimilar friction stir welding of AA6061-T6 and AA5086-O have been evaluated. The thermo-mechanical responses of materials during the process have been predicted employing a three-dimensional model together with a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics