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Article Dans Une Revue Welding in the World Année : 2022

DIC‑aided analysis of the fatigue behaviour of a welded 316L stainless steel

Résumé

The paper investigates the fatigue damage processes of a welded joint made of 316L stainless steel plates by using the digital image correlation (DIC) technique. First, the strain partition around a surface defect evidenced very high value of strain up to 10% at the notch root during the tension stage, which explained the poor fatigue life of some welded joint specimen. In healthy specimen, a strain gradient from the base metal to the fusion zone in the range of 0.3–0.6% to 3% respectively was evidenced. Fatigue crack always initiated in the fusion zone where the deformation concentrated either early in the fatigue life at high stress or progressively by a mechanism of deformation transfer from the base metal to the fusion zone at low stress.
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Dates et versions

hal-03759621 , version 1 (24-08-2022)

Identifiants

Citer

Amina Sriba, Jeremie Bouquerel, Jean-Bernard Vogt. DIC‑aided analysis of the fatigue behaviour of a welded 316L stainless steel. Welding in the World, 2022, Welding in the World, 66 (9), pp.1915-1927. ⟨10.1007/s40194-022-01355-9⟩. ⟨hal-03759621⟩
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