首页|Effects of spot welded parameters on fatigue behavior of ferrite-martensite dual-phase steel and hybrid joints
Effects of spot welded parameters on fatigue behavior of ferrite-martensite dual-phase steel and hybrid joints
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NSTL
Elsevier
In this paper, the fatigue behavior of resistance spot welding in the ferrite-martensite dual-phase steel joints with one and three spot-welds and hybrid joints have been investigated. Experimental parameters are welding time, electric current's intensity, and the compressive force applied. Design of experiments were done by Taguchi statistical method and because of the number of studied parameters and factors. In order to predict the optimal parameters of the resistance spot welding, signal to noise ratio is used in Taguchi method. Also, scanning electron microscope (SEM) images of the fracture surfaces of specimens are investigated to evaluate the effect of studied parameters from a morphological viewpoint. The results show that the effect of electric current on the fatigue life of joints is more than other parameters but its effectiveness diminishes as it increases. The adhesive on the hybrid joints also has a significant effect on the increase of its fatigue life and fatigue strength.
NSTL
Elsevier
