On the effects of laser shock peening on fatigue behavior of V-notched AlSi10Mg manufactured by laser powder bed fusion
Source abstract
Abstract
Post-processing methods can efficiently reduce the negative effects of the internal and surface defects in as-built laser powder bed fusion materials. In this study, the influence of different post-treatments including T6 thermal treatment and laser shock peening were investigated individually and synergistically together with electro-chemical polishing on microstructure, surface morphology, roughness, hardness and residual stresses as well as rotating bending fatigue behavior of V-notched LPBF AlSi10Mg samples. The results indicated that laser shock peening has a high potential to close the sub-surface pores up to a depth of 390 and 420 μm leading to an overall mean porosity reduction of 52% and 62% in the as-built and heat treated samples, respectively. In addition, the hybrid post-treatment of heat treatment + laser shock peening + electro-chemical polishing was found to remarkably improve the fatigue life up to 400 times longer compared to the as-built state.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Surface Treatment and Residual Stress · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (78)
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