TY - JOUR
TI - Analysis of the tool plunge in friction stir welding - comparison of aluminium alloys 2024 T3 and 2024 T351
AU - Veljić Darko M
AU - Međo Bojan I
AU - Rakin Marko P
AU - Radosavljević Zoran
AU - Bajić Nikola S
JN - Thermal Science
PY - 2016
VL - 20
IS - 1
SP - 247
EP - 254
PT - Article
AB - Temperature, plastic strain and heat generation during the plunge stage of  the friction stir welding (FSW) of high-strength aluminium alloys 2024 T3 and  2024 T351 are considered in this work. The plunging of the tool into the  material is done at different rotating speeds. A three-dimensional finite  element (FE) model for thermomechanical simulation is developed. It is based  on arbitrary Lagrangian-Eulerian formulation, and Johnson-Cook material law  is used for modelling of material behaviour. From comparison of the numerical  results for alloys 2024 T3 and 2024 T351, it can be seen that the former has  more intensive heat generation from the plastic deformation, due to its  higher strength. Friction heat generation is only slightly different for the  two alloys. Therefore, temperatures in the working plate are higher in the  alloy 2024 T3 for the same parameters of the plunge stage. Equivalent plastic  strain is higher for 2024 T351 alloy, and the highest values are determined  under the tool shoulder and around the tool pin. For the alloy 2024 T3,  equivalent plastic strain is the highest in the influence zone of the tool  pin. [Projekat Ministarstva nauke Republike Srbije, br. TR 34016 i br. TR  35006]