Abstract
Since in literature only data about the effect of the hot-dip galvanizing coating on fatigue behavior of unnotched specimens are available, whereas very few for notched components and none for welded joints, the aim of this paper is to partially fill this lack of knowledge comparing fatigue strength of uncoated and hot-dip galvanized fillet welded cruciform joints made of structural steel S355 welded joints, subjected to a load cycle R = 0. 34. The results are shown in terms of stress range ?? and of the averaged strain energy density range DeltaW in a control volume of radius R0 = 0.28 mm
Highlights
C orrosion is one of the main issue affecting metallic materials such as iron and steel, and several technique to prevent corrosion are available in literature, especially surface treatments
Bergengren and Melander [4], found an increase in the detrimental effect on fatigue life increasing the zinc layer thickness, but, contrasting results were obtained by Browne et al, [5], and Nilsson et al, [6], that did not find any correlation in terms of loss of the fatigue strength due to the coating thickness
The results report the harmful effect of the presence of zinc layer on fatigue strength both in terms of stress range Δσ and of the averaged strain energy density range W in a control volume of radius R0 = 0.28 mm
Summary
C orrosion is one of the main issue affecting metallic materials such as iron and steel, and several technique to prevent corrosion are available in literature, especially surface treatments. Experimental results on notched components, that represents a great gap since notches greatly affect the mechanical behavior [12,13,14,15] , the detrimental effect of the zinc layer on the fatigue strength cannot be quantified yet, neither in [11], since a direct comparison between uncoated and hot-dip galvanized notched specimens was not performed. Though hot-dip galvanization is widely used to enhance the corrosion resistance of welded joints, none researchers have interested in assessing the effect of this surface treatment on their fatigue behavior. The aim of this work is to fill these lacks, by means of experimental fatigue tests on uncoated and hot-dip galvanized fillet welded cruciform joints made of structural steel S355. The coating thickness resulted in a range between 96 and 104 μm
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
