Technology Tech Breakthrough

Harbin Institute of Technology Proposes New Enlarged Cavity AFSD Tool to Enhance Interlayer Bonding in Aluminum Alloys

2026-05-23

A joint research team from Harbin Institute of Technology has developed a novel additive friction stir deposition (AFSD) tool with an enlarged cavity, significantly improving the density and interlayer bonding strength of Al-Zn-Mg-Cu alloy components. Test data show a tensile strength of 302 MPa and elongation of 32.0% along the travel direction, and 289 MPa with 25.9% elongation along the build direction, achieving quasi-isotropy and outperforming existing AFSD materials. This technology provides a reliable solution combining high strength and high plasticity for fabricating large-scale high-strength aluminum alloy components, broadening application prospects in automotive and aerospace structural parts.

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哈工大提出新型扩腔AFSD工具，强化铝合金层间结合

哈尔滨工业大学联合研究团队，通过设计带扩腔的新型搅拌摩擦沉积（AFSD）工具，使Al-Zn-Mg-Cu合金构件致密度和层间结合强度显著提升。实测数据显示，沿行进方向抗拉强度为302 MPa、延伸率32.0%；沿建造方向为289 MPa、延伸率25.9%，实现准各向同性，优于现有AFSD材料。该技术为打印高强铝合金大型构件提供了兼具高强度与高塑性的可靠方案，拓宽了在汽车、航天结构件领域的应用空间。

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