Revealing the deposition behavior and bonding mechanisms of friction stir additive manufacturing based on wire-chopping screw press-assisted heating via multi-dimensional material tracing technology

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• The bonding mechanisms discovered have important implications for improving material properties in additive manufacturing.
• Analysis of deposition behavior is vital for optimizing the performance of friction stir additive manufacturing processes.
• Utilizing multi-dimensional material tracing technology enhances understanding of bonding mechanisms during fabrication.
• Insights into screw press-assisted heating reveal benefits in temperature control and material bonding efficiency.