Journal of Aeronautics & Aerospace Engineering
Open Access

Fatigue behavior of dissimilar welded Monel400 and SS316 by FSW

9^th International Conference and Exhibition on Satellite & Space Missions

September 11, 2023 | Webinar

Aboozar Aghaei

Hirbodan Management Company

Scientific Tracks Abstracts: J Aeronaut Aerospace Eng

Abstract :

In the present work, the dissimilar Monel400 and SS316 were joined by friction stir welding (FSW). The applied rotating speed was 400 rpm, whereas the traverse speed varied between 50 and 150 mm/min. At a constant rotating speed, the sound welds were obtained at the welding speeds of 50 and 100 mm/min. However, a groove-like defect was formed when the welding speed exceeded 100 mm/min. The mechanical properties of the joints were evaluated using tensile and fatigue tests. The fatigue strength of dissimilar FSWed specimen was higher than that of both Monel400 and SS316. To study the failure behavior of FSWed specimens, the fracture surfaces were analyzed using scanning electron microscope (SEM). The failure analysis indicates that different mechanisms may contribute to the fracture of welds. This was attributed to the dissimilar characteristics of dissimilar materials exhibiting different failure behaviors.

Biography :

Aboozar Aghaei is from Hirodan Management Company. He attended so many conferences.