Fatigue crack propagation behaviour of inconel 718 structures built using directed energy deposition based laser additive manufacturing
Source abstract
Abstract
Abstract Considering the wide applications of Laser Directed Energy Deposition (LDED) based Additive Manufacturing built Inconel718 (IN718) bulk structures, fatigue crack propagation (FCP) studies are performed on LDED built IN718 structures at two different scan strategies (Z-pattern-0 and Z-pattern-90) for the first time. Microscopic analysis shows that the built structures are defect-free with slightly fine dendritic growth for Z-pattern-90 samples. FCP tests reveal striations ≤ 200 nm and show about 2.5 times higher FCP resistance for Z-pattern-90 as compared to Z-pattern-0. FCP resistance of thus built samples is observed to be in between forged and Laser Powder Bed Fusion built samples. This study provides an understanding of the FCP behaviour of LDED built IN718 for various engineering applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
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