
高强铝合金连续送丝搅拌摩擦增材再制造技术
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
Wire-friction stir additive remanufacturing of high strength aluminum alloys
针对铝合金构件在生产或服役过程中出现的大尺寸裂纹或磨损缺肉等问题,提出了连续送丝搅拌摩擦增材再制造方法,设计了由专用送丝装置、静止轴套与螺杆结构搅拌头组成的搅拌摩擦增材再制造工具,实现了高强铝合金板材表面预置宽度10 mm且深度2 mm的凹槽缺陷的有效填充与修复。结果表明:修复件表面成形良好,组织均匀,力学性能良好;通过动态回复和再结晶过程对晶粒进行细化,晶粒尺寸为1.59 μm;修复件平均抗拉强度和伸长率分别为(410±8) MPa和(11.9±0.9)%,相较于带缺陷试样分别提高了26% 和159%;断口表面具有大量的韧窝,呈典型的韧性断裂特征。
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.
搅拌摩擦修复 / 固相再制造 / 7A52铝合金 / 微观组织 / 力学性能
friction stir repairing / solid state remanufacturing / 7A52 aluminum alloy / microstructure / mechanical property
TG453.9 / TB31
[1] |
徐滨士. 绿色再制造工程———21世纪的重要产业[J]. 航空制造技术,2002(6):26-28.
|
[2] |
王海斗,张文宇,宋巍. 再制造二十年足迹及发展趋势[J].机械工程学报,2023,59(20):80-95.
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
刘志浩,王文,韩鹏,等. 搅拌摩擦加工改性冷喷涂6061铝合金涂层的断裂行为[J]. 塑性工程学报,2023,30(3):190-196.
|
[9] |
徐荣,王文军,祝弘滨,等. 激光定向能量沉积Al-Mg-Sc-Zr修复5083-H112铝合金的组织和性能[J]. 材料工程,2024,52(2):40-49.
|
[10] |
刘海滨,徐添乐,谢瑞山. 航空航天领域轻合金缺陷修复研究现状及发展趋势[J]. 航天制造技术,2023,66(2):1-9.
|
[11] |
陈刚,武凯,孙宇,等. 搅拌摩擦沉积增材技术研究进展[J].材料工程,2024,51(1):52-63.
|
[12] |
|
[13] |
张欣盟,何广忠,王贝贝,等. 6082- T6 铝合金填料搅拌摩擦焊工艺[J]. 电焊机,2020,50(12):54-58.
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
王东,韩世伟,张世全,等. 5B06焊丝在7A52装甲铝合金上的焊接性研究[J]. 兵器材料科学与工程,2016,39(6):17-20.
|
[24] |
井瑞,谭茂举,武传松,等. 2A12/AZ31B异质合金超声振动辅助搅拌摩擦焊核区晶粒组织[J]. 材料工程,2023,51(12): 75-83.
|
/
〈 |
|
〉 |