Welding of LY12 aluminum alloy based on fibre laser

被引：0

作者：

Liu H. ^{[1
]}

Hu F. ^{[1
]}

Lei G. ^{[2
]}

Huang F. ^{[3
]}

Cui A. ^{[1
]}

机构：

[1] Aeronautical Mechanism Department, Naval Aeronautical Engineering Institute Qingdao Branch, Qingdao

[2] No. 92925 Unit, People's Liberation Army of China, Changzhi

[3] Deqartment of Navy Aviaation Technology Support, Department of the Naval, Equipment, Beijing

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2017年 / 38卷 / 07期

关键词：

Laser technique; Laser welding; LY12 aluminum alloy; Microstructure and property; Welding process;

D O I：

10.12073/j.hjxb.20150705002

中图分类号：

学科分类号：

摘要：

In aircraft manufacturing industry, the aluminum alloy is mainly used in the skin, beam, purlin and frame structures. Laser welding of 1.2 mm thick LY12 aluminum alloy sheets was conducted with multimode fibre laser. The influence of laser welding parameters on aluminum alloy weld shape was studied, and the fracture appearance and microhardness of welded joint were analyzed. The results show that the weld appearance with large power and high speed continuous laser was instable. The welded joint with good shape and free defects can be obtained with laser power of 2 200 W, welding speed of 55 mm/s and shielding gas flow rate of 10 L/min. The average tensile strength of joint was 388 MPa, reaching 63.98% of that of the base metal. The fracture of the joint was a mixed ductile-brittle mode. © 2017, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：25 / 30

页数：5

共 9 条

[1]

Sun H., Xue S., Feng X., Et al., Microstructure and mechanical properties of weld joint of marine 6082 aluminum alloy by TIG welding, Transactions of the China Welding Institution, 35, 2, pp. 91-94, (2014)

[2]

Zhang J., Lei Z., Wang X., Weld hot crack analysis of6005A aluminum profile for high-speed train, Transactions of China Welding Institution, 33, 8, pp. 60-64, (2012)

[3]

Li X., Song Y., Lu Z., Et al., High frequency energy coupling pulsed TIG welding process on 2219 aluminum alloy, Transactions of the China Welding Institution, 36, 5, pp. 17-20, (2015)

[4]

Hu F., Hui L., Yi D., Et al., Laser repair of aircraft battle damage, Chinese Journal of Lasers, 36, 9, pp. 2245-2250, (2009)

[5]

Hu F., Hu B., Meeting the needs of modern naval warfare, quickening the construction of our naval aircraft war-wound rush repairing, National Defense Science & Technology, 29, 3, pp. 61-66, (2008)

[6]

Liu B., Peng C., Wang R., Et al., Recent development and prospects for giant plane aluminum alloys, The Chinese Journal of Nonferrous Metals, 20, 9, pp. 1705-1715, (2010)

[7]

Filatov Y.A., Yelagin V.I., Zakharov V.V., New Al-Mg-Sc alloys, Materials Science and Engineering A, 280, pp. 97-101, (2000)

[8]

Lu C., Hu F., Huang X., Et al., Microstructure and fatigue properties of aviation aluminum alloy LY12CZ repaired by laser melt casting, Ordnance Material Science and Engineering, 34, 6, pp. 58-61, (2011)

[9]

Ren X., Huangfu Y., Ruan L., Et al., Effects of laser shock processing on micro-hardness of Ni-Based superalloy K417 at elevated temperature, Chinese Journal Lasers, 39, 7, (2012)

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