Abstract
The spindle characteristic signal (forces and vibrations) at different friction stir lap welding (FSLW) parameters were studied. The result indicated that the spindle force and vibration have different trends with the change of welding parameters. For further study, the spindle dynamic performance evaluation model by means of the Technique for Order Preference by Similarity to the Ideal Solution (TOPSIS method) was established. The model was used to calculate the relative approach degree B under different welding process parameters. The correlation between the characteristic signal and the joint properties was obtained. The model was validated by mechanical performance testing and microscopic observation. The results showed that the model evaluations were consistent with the experimental results.
Highlights
Characteristic Signal, MicrostructureRestrictions on environmental protection, energy conservation, and emission reductions have become increasingly stringent in the automobile manufacturing industry
All the specimens were constructed on an HT-JM16 × 8/1 one-dimensional gantry friction stir welding machine
In the friction stir lap welding (FSLW) process, the interaction between the spindle and the specimen during the forming process of the weld may be divided into four phases: the plunging stage (I), dwelling stage (II), welding stage (III), and pulling-out stage (IV) [22]
Summary
Restrictions on environmental protection, energy conservation, and emission reductions have become increasingly stringent in the automobile manufacturing industry. Aluminum and magnesium alloys are widely used in the automotive industry as ideal lightweight materials due to their high damping capacities, high specific strengths, low weights, and excellent formability properties [1,2]. The greatest challenge for joining dissimilar materials of aluminum and magnesium alloys is the formation of intermetallic compound (IMC) phases in the welded joint of the two alloys. Researchers have attempted to join dissimilar aluminum/magnesium alloys using brazing [5], diffusion welding [6], ultrasonic welding [7], laser welding [8], resistance welding [9], and arc welding [10], but each of these methods is associated with unique problems. With the help of the high strain rate and large deformation during FSLW, the distribution of IMC is effectively improved, making FSLW the ideal joining technique for these two light alloy materials
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
