HE Weiliang, WANG Wei, LI Huafang, et al.Effect of Rotational Velocity on Temperature and Residual Stress Field by Stationary Shoulder Friction Stir Welding[J].Electric Welding Machine, 2024, 54(1): 86-94.
HE Weiliang, WANG Wei, LI Huafang, et al.Effect of Rotational Velocity on Temperature and Residual Stress Field by Stationary Shoulder Friction Stir Welding[J].Electric Welding Machine, 2024, 54(1): 86-94. DOI： 10.7512/j.issn.1001-2303.2024.01.15.
Effect of Rotational Velocity on Temperature and Residual Stress Field by Stationary Shoulder Friction Stir Welding
Based on 3 mm thickness 2024-T4 Alloys, the three-dimensional model for heat source of stationary shoulder friction stir welding is established by using numerical simulation software ABAQUS. The temperature and residual stress field distributions of stationary shoulder friction stir welding of 2024-T4 is analyzed, and the effects of rotational velocities ranging from 800 mm/min to 1 200 mm/min on residual stress were investigated in detail. The results show that the high temperature region of the cross-section appeared to be a bowl-shaped distribution, and the shape for the stationary shoulder friction stir welding was similar to the rotating pin. Stationary shoulder friction stir welding was beneficial to decreasing the peak temperature of stir zone and then obtaining a narrower area compared with conventional shoulder. The shape of the longitudinal residual stress in section perpendicular to the weld presented “M”after welding. The residual stress increased with the increase of rotational velocity under different processes. The stationary shoulder provided synchronous rolling during welding,which reduced 45.6% peak residual stress.
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