Impact of Native Oxides on Bonding Interface Microstructure in Deformation-Based Solid-State Additive Manufacturing AITranslate

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In solid-state metal additive manufacturing, oxide removal is crucial for high-quality bonding, yet its impact remains unclear. In the article, the influence of oxides on the bonding interface by using cold spray additive manufacturing and leveraging diverse deformation mechanisms of high-entropy alloys is revealed. Advanced microstructure characterization shows that oxide fragmentation drives grain refinement via lattice rotation and substructure formation. As grain refinement progresses, oxide fragmentation increases metal-to-metal contact, promoting metallurgical bonding. These findings offer deep insights into the role of native oxides at the bonding interface and provide guidance for optimizing bond quality in solid-state additive manufacturing.