Effect of Different Tool Probe Profiles on Material Flow of Al–Mg–Cu Alloy Joined by Friction Stir Welding

Materials

Jong-Ning Aoh¹  Evgenii Rylkov²  Oleg Panchenko²  Fedor Isupov²  Anton Naumov²  Anatoly Popovich²  Andrey Rudskoy²  Pavel Polyakov² 

[1] Advanced Institute of Manufacturing with High-Tech Innovations (AIM-HI), National Chung Cheng University, Min-Hsiung, Chiayi 621, Taiwan;Institute of Mechanical Engineering, Materials and Transport, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;

关键词: Al–Mg–Cu alloy;    friction stir welding (FSW);    probe profile;    microstructure evolution;    mechanical properties;    material flow;   

DOI  :  10.3390/ma14216296

来源: DOAJ

【 摘 要 】

Friction Stir Welding (FSW) was utilized to butt−join 2024–T4 aluminum alloy plates of 1.9 mm thickness, using tools with conical and tapered hexagonal probe profiles. The characteristic effects of FSW using tools with tapered hexagonal probe profiles include an increase in the heat input and a significant modification of material flow, which have a positive effect on the metallurgical characteristics and mechanical performance of the weld. The differences in mechanical properties were interpreted through macrostructural changes and mechanical properties of the welded joints, which were supported by numerical simulation results on temperature distribution and material flow. The material flow resulting from the tapered hexagonal probe was more complicated than that of the conical probe. If in the first case, the dynamic viscosity and strain rate are homogeneously distributed around the probe, but in the case of the tapered hexagonal probe tool, the zones with maximum values of strain rates and minimum values of dynamic viscosity are located along the six tapered edges of the probe.

【 授权许可】

Unknown