The objective of this study is to evaluate the influence of an external magnetic field on the interfacial fracture behavior of friction stir welded aluminum alloy joints using combined experimental testing and numerical simulation. T-peel and U-peel tests were performed under different magnetic field intensities to determine the variations in maximum cohesive traction and fracture energy at the weld interface. A cohesive zone model was calibrated based on the experimental load–displacement responses, and the magnetic-field-dependent parameters were implemented through a UMAT subroutine. The results showed that applying a moderate magnetic field led to a measurable increase in interfacial performance, with approximately 13% enhancement in maximum cohesive traction and about 10% improvement in fracture energy. Numerical simulations using the calibrated model accurately reproduced the experimental trends and confirmed the magnetic-field-induced strengthening effects. These findings demonstrate that incorporating a controlled magnetic field during friction stir welding can effectively improve the resistance of the interface to fracture.
RajakumarSMuralidharanCBalasubramanianV. Influence of friction stir welding process and tool parameters on strength properties of AA7075–T6 aluminium alloy joints. Mater Des2011; 32(2): 535–549. https://doi.org/10.1016/j.matdes.2010.08.025
3.
Karimi IvanakiMPoursaeidiEAfshariD. Investigating the effect of Al2O3 nanoparticles on the microstructure and corrosion resistance of dissimilar friction stir welding in aluminum alloys 6061–T6 and 5083. J Mater Eng Perform2025; 35: 2688–2701. https://doi.org/10.1007/s11665-025-11772-8
4.
Karimi IvanakiMPoursaeidiEAfshariD. Experimental and numerical investigation of single and double pass friction stir welding of dissimilar aluminum alloys 6061–T6 and 5083 with the addition of Al2O3. Trans Indian Inst Met2025; 78(5): 127. https://doi.org/10.1007/s12666-025-03592-0
5.
IvanakiMKAfshariDPoursaeidiE, et al. Experimental and numerical study of temperature and residual stress in two-pass friction stir welding of dissimilar alloys 6061–T6 to 5083. Proc Inst Mech Eng Part B: J Eng Manuf2025; 2025: 1–5. https://doi.org/10.1177/09544054251377157
6.
IvanakiMKAfshariDPoursaeidiE. Effects of friction stir welding of 6061–T6 to 5083–H11 aluminum alloys reinforced with Al2O3 on microstructure, hardness, and wear resistance. Int J Precis Eng Manuf2025; 27: 667–679. https://doi.org/10.1007/s12541-025-01311-9
7.
ElangovanKBalasubramanianV. Influences of tool pin profile and tool shoulder diameter on the formation of friction stir processing zone in AA6061 aluminium alloy. Mater Des2008; 29(2): 362–373. https://doi.org/10.1016/j.matdes.2007.01.030
8.
KumarKKailasSVSrivatsanT. The role of tool design in influencing the mechanism for the formation of friction stir welds in aluminum alloy 7020. Mater Manuf Process2011; 26(7): 915–921. https://doi.org/10.1080/10426914.2011.560222
9.
JariyaboonMDavenportAJAmbatR, et al. The effect of welding parameters on the corrosion behaviour of friction stir welded AA2024–T351. Corros Sci2007; 49(2): 877–909. https://doi.org/10.1016/j.corsci.2006.05.038
ZhouMYangLChenS, et al. Simulation and experiment of magnetic and temperature field on high rotation speed friction stir welding assisted by magnetic field. In: Ninth international conference on energy materials and electrical engineering (ICEMEE 2023), 2024, pp. 758–764. SPIE.
12.
GaoYChenSChenX, et al. Effect of rotating electromagnetic field on the microstructural evolution of 2219–T6 aluminum alloy during friction stir welding. J Manuf Process2025; 150: 714–725. https://doi.org/10.1016/j.jmapro.2025.06.040
13.
ChenXChenSYangZ, et al. Research on rotating magnetic field-assisted HRFSW 6061–T6 thin plate. High Temp Mater Process2025; 44(1): Article 20250072. https://doi.org/10.1515/htmp-2025-0072
14.
ChenXChenSDuanR, et al. Study on the microstructure and properties of spray formed 7055–T76 aluminum alloy joints by rotating magnetic field assisted friction stir welding. Mater Charact2024; 214: Article 114080. https://doi.org/10.1016/j.matchar.2024.114080
15.
KinlochAJ. Adhesion and adhesives: science and technology. Springer Science & Business Media, 2012.
16.
BlackmanBRKKinlochAJParaschiM, et al. Measuring the mode I adhesive fracture energy, GIC, of structural adhesive joints: the results of an international round-robin. Int J Adhes Adhes2003; 23(4): 293–305. https://doi.org/10.1016/S0143-7496(03)00047-2
TuronACamanhoPPCostaJ, et al. A damage model for the simulation of delamination in advanced composites under variable mode loading. Mech Mater2006; 38(11): 1072–1089. https://doi.org/10.1016/j.mechmat.2005.10.003
22.
ZhouBThoulessMDWardS. Determining mode-I cohesive parameters for nugget fracture in ultrasonic spot welds. Int J Fract2005; 136: 309–326. https://doi.org/10.1007/s10704-005-6036-7
23.
ZhouBThoulessMWardS. Predicting the failure of ultrasonic spot welds by pull-out from sheet metal. Int J Solids Struct2006; 43(25–26): 7482–7500. https://doi.org/10.1016/j.ijsolstr.2006.03.009
24.
KulkarniSSGuptaVOrtizA, et al. Determining cohesive parameters for modeling interfacial fracture in dissimilar-metal friction stir welded joints. Int J Solids Struct2021; 216: 200–210. https://doi.org/10.1016/j.ijsolstr.2021.01.023
WangTRamírez-TamayoDJiangX, et al. Effect of interfacial characteristics on magnesium to steel joint obtained using FAST. Mater Des2020; 192: Article 108697. https://doi.org/10.1016/j.matdes.2020.108697
27.
CamanhoPPDávilaCG. Mixed-mode decohesion finite elements for the simulation of delamination in composite materials. Eng Fract Mech2002; 69: 683–697. https://doi.org/10.1016/S0013-7944(01)00084-9
28.
DohmenEKrausB. Coupled anisotropic magneto-mechanical material model for structured magnetoactive materials. Polymers2020; 12(11): 2710. https://doi.org/10.3390/polym12112710
