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

Abstract:

Fatigue test of the welded joint of 5083 aluminum alloy with smooth and height of specimen and the weld zone than the high test measurement and theoretical stress concentration coefficient calculation, the weld reinforcement effect of stress concentration on the fatigue performance of welded joints. The results show that: Smooth tensile strength of specimens for 264MPa, fatigue strength is 95MPa, the tensile strength of the 36%. Higher tensile strength of specimens for 320MPa, fatigue strength is 70MPa, the tensile strength of the 22%. Higher specimen stress concentration coefficient is 1.64, the stress concentration to the weld toe becomes fatigue initiation source, and reduces the fatigue strength and the fatigue life of welded joints.

• Periodical: Applied Mechanics and Materials (Volume 456)
• Pages: 451-455
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.456.451
• Online since: October 2013
• Authors: Jun Yang, Bo Li, Qiang Jia, Yuan Xing Li, Ming Yue Zhang, Hui Chen*
• Keywords: AA5083 Aluminum Alloy, Fatigue, Stress Concentration, Welded Joint

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