材料工程2025，Vol.53Issue(5)：85-92,8.DOI:10.11868/j.issn.1001-4381.2024.000385
高强铝合金连续送丝搅拌摩擦增材再制造技术
Wire-friction stir additive remanufacturing of high strength aluminum alloys
摘要
Abstract
A wire-based friction stir additive remanufacturing(W-FSAR)method is proposed to address large cracks and material loss in aluminum alloy components during production and service.The W-FSAR tools consist of a wire feeding device,a stationary sleeve,and a screw-structured stirring head.This method effectively fills and repairs 10 mm-width and 2 mm-depth groove defects in aluminum alloy components.The results indicate the repaired sample has high repair efficiency,smooth morphology,homogeneous microstructure,and excellent mechanical properties.The dynamic recovery and recrystallization processes refine the grain size to 1.59 μm.The ultimate tensile strength and elongation of the repaired samples are(410±8)MPa and(11.9±0.9)%,respectively,which increase by 26%and 159%compared to the worn-out specimens.There are numerous dimples on the fracture surface,exhibiting typical ductile fracture characteristics.关键词
搅拌摩擦修复/固相再制造/7A52铝合金/微观组织/力学性能Key words
friction stir repairing/solid state remanufacturing/7A52 aluminum alloy/microstructure/mechanical property分类
金属材料引用本文复制引用
袁靖宇,孟祥晨,陈佳霖,谢聿铭,张欣盟,黄永宪..高强铝合金连续送丝搅拌摩擦增材再制造技术[J].材料工程,2025,53(5):85-92,8.基金项目
黑龙江省自然科学基金项目(LH2022E058) （LH2022E058）
中央高校基本科研业务费专项资金资助(HITDZJJ2023006) （HITDZJJ2023006）
