Observations on the influence of process and corrosion related defects on the fatigue strength of 316L stainless steel manufactured by Laser Powder Bed Fusion (L-PBF)
Source abstract
Abstract
Abstract This paper focuses on the relationship between the fatigue performance and the presence of process or corrosion related defects for a 316L stainless steel manufactured by Laser Powder Bed Fusion. The fatigue responses of three batches (polished, pre-corroded and with an Electric Discharge Machined (EDM) defect) were investigated. A good correlation between Murakami’s a r e a parameter and the fatigue strength was observed. Defect morphology does not seem to be an important factor for crack initiation as ellipsoidal corrosion pits, hemispherical EDM defects and flat lacks of fusion, although very different in terms of shape, are just as harmful at equivalent sizes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Welding Techniques and Residual Stresses · Hydrogen embrittlement and corrosion behaviors in metals
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