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Ávila Calderón, Luis Alexander
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Topics
Publications (6/6 displayed)
- 2024Tensile and Low‐Cycle Fatigue Behavior of Laser Powder Bed Fused Inconel 718 at Room and High Temperaturecitations
- 2024Research Data Management for Creep Reference Data of Ni Based Superalloys
- 2023Evolution of Creep Damage of 316L Produced by Laser Powder Bed Fusioncitations
- 2023Elastic modulus data for additively and conventionally manufactured variants of Ti-6Al-4V, IN718 and AISI 316 Lcitations
- 2022Creep and creep damage behavior of stainless steel 316L manufactured by laser powder bed fusioncitations
- 2022Characterization of Ti-6Al-4V fabricated by multilayer laser powder-based directed energy depositioncitations
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article
Evolution of Creep Damage of 316L Produced by Laser Powder Bed Fusion
Abstract
The damage mechanisms of metallic components produced by process laser powder bed fusion differ significantly from those typically observed in conventionally manufactured variants of the same alloy. This is due to the unique microstructures of additively manufactured materials. Herein, the focus is on the study of the evolution of creep damage in stainless steel 316L specimens produced by laser powder bed fusion. X-ray computed tomography is used to unravel the influence of the process-specific microstructure from the influence of the initial void distribution on creep damage mechanisms. The void distribution of two specimens tested at 600 °C and 650 °C is analyzed before a creep test, after an interruption, and after fracture. The results indicate that the formation of damage is not connected to the initial void distribution. Instead, damage accumulation at grain boundaries resulting from intergranular cracking is observed.