2013•Rejiagong gongyiRequires access

Effects of Repair Welding on Fatigue Performance of Ferritic Stainless Steel T4003 Butt Joint

HU Cheng-shan

Abstract

The fatigue performance of the ferritic stainless steel T4003 butt joints was researched.Pulsating tensile fatigue test non-repairing welding.The median fatigue performance of once-repairing welding and second-repairing welding connectors was compared.The results show that the median fatigue strength of the once-repairing welding and the second-repairing welding ferritic stainless steel T4003 butt joints decreases significantly comparing with the non-repairing welding connectors.The median fatigue strength of the once-repairing welding reduces by about 5.0MPa,while the median fatigue strength of the second-repairing welding reduces by about 25.3MPa.

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Key concepts: Welding, Materials science, Butt joint, Butt welding, Fatigue limit, Ultimate tensile strength, Joint (building), Metallurgy