Preliminary Study of Improvement of Fatigue Properties of Welded Joints by Plasma Spray Process

Influence of Stress Concentration on Fatigue Property of Welded Joints of 5083 Aluminum Alloy

“…. Average values into the type table Weld Geometry in 3 (1)(2)(3)(4)(5)(6), are used to calculate the joint stress concentration factor KT Weld Geometry, KT=1.64. For welded joint of 5083 aluminum alloy with high tensile fatigue residual sample, the highest stress is 1.64 times the mean stress, the stress concentration is very serious.…”

“…But the welding weld structure, due to the presence of high strengthen the cross-section in the mutation and produce stress concentration, which makes the fatigue strength of welded structure greatly reduced [2]. Despite the stress concentration at the weld toes and weld transition radius and transition angle is discussed as well as the influence of on the fatigue performance of welded joints [3][4][5], the effect on weld geometry feature fatigue performance of aluminum alloy welded joint is less detailed. This paper has studied the influence of 5083 Aluminum Alloy Weld Geometry on the fatigue performance of the joints of aluminum alloy welding, control provides a theoretical basis for aluminum alloy welding structure design, welding process and weld quality.…”

Comparison of Microstructure and Residual Stress Between TIG and MAG Welding Using Low Transformation Temperature Welding Filler

“…Tensile residual stress (RS) is known to be detrimental to the fatigue strength of welded joints [1]. Using low transformation temperature (LTT) welding fillers, however, numerous studies have demonstrated that the RS state in welded joints can be reversed from tensile to compressive, improving the fatigue strength of welded joints [2][3][4][5]. Although LTT weld metals are competent in generating lower RS in welded joints, the toughness of the LTT weld metals is rather low, which limits its application to welding engineering [6].…”