航空学报 > 2018, Vol. 39 Issue (11): 22154-022154   doi: 10.7527/S1000-6893.2018.22154

钛/铝异质金属搅拌摩擦焊技术研究进展

黄永宪, 吕宗亮, 万龙, 孟祥晨, 曹健   

  1. 哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001
  • 收稿日期:2018-03-21 修回日期:2018-04-08 出版日期:2018-11-15 发布日期:2018-05-21
  • 通讯作者: 黄永宪 E-mail:yxhuang@hit.edu.cn
  • 基金资助:
    国家自然科学基金(51575132)

Review of dissimilar friction stir welding between titanium and aluminum

HUANG Yongxian, LYU Zongliang, WAN Long, MENG Xiangchen, CAO Jian   

  1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
  • Received:2018-03-21 Revised:2018-04-08 Online:2018-11-15 Published:2018-05-21
  • Supported by:
    National Natural Science Foundation of China (51575132)

摘要: 钛合金和铝合金均具有质轻、比强度高和抗腐蚀性能好等优点,已广泛应用于航空航天、军事工业和公共交通等领域,钛/铝异种金属复合结构的连接逐渐成为研究热点。然而,由于物理和化学性能差异明显,钛/铝焊接难度大,存在成形困难、接头性能较差等问题。搅拌摩擦焊作为一种固相焊接方法,对克服异种材料性能差异带来的焊接困难具有极大的优势。本文综述了钛/铝异质金属搅拌摩擦焊的研究现状,主要涉及焊缝成形、焊接参数、力学特征、冶金结合和连接机制等,以及衍生的搅拌摩擦焊新技术,为钛/铝异质金属结构的轻量化设计提供新思路,并对其未来发展进行了展望。

关键词: 钛/铝异质金属, 搅拌摩擦焊, 接头成形, 连接机制, 机械性能

Abstract: Titanium and aluminum alloys have been widely applied to aircraft, military and automobiles industries due to their significant advantages such as weight savings, high strength-to-weight ratio and resistance to corrosion. The joining technology for the Ti/Al composite structure is becoming a hot research point. However, Ti/Al joints are difficult to weld, accompanied by appearance and mechanical problems, owing to their significant differences in physical and chemical properties. As a solid-state welding process, Friction Stir Welding (FSW) has tremendous advantage in overcoming the welding problems induced by dissimilar materials. In this paper, the current research status of Ti/Al friction stir welding is reviewed, including weld formation, welding parameters, mechanical properties, metallurgical bonding mechanisms for varied joint morphology from button joint, lap joint to spot joint. Latest research on new technology for Al/Ti welding is also discussed, giving new insight into the lightweight design of the Ti/Al heterogeneous structure. The development trend of joining technology for the structure is forecasted.

Key words: Ti/Al dissimilar alloys, friction stir welding, joint formation, joining mechanism, mechanical property

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