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| 钛-铝异种材料的点焊技术研究新进展 |
| New Progress in Spot Welding Technology of Titanium-Aluminum Dissimilar Materials |
| Received:July 20, 2019 Revised:September 10, 2019 |
| DOI：10.3969/j.issn.1674-6457.2019.05.009 |
| 中文关键词: 钛/铝异种材料 接头成形 力学性能 连接机制 |
| 英文关键词: Ti/Al dissimilar material joint forming mechanical property connection mechanism |
| 基金项目:国家自然科学基金（51865035）；江西省杰出青年基金（2018ACB21016）；江西省优势科技创新团队项目（20171BCB24007） |
| Author Name | Affiliation | | LIU Hao | 1. School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nangchang 330063, China | | CHEN Yu-hua | 1. School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nangchang 330063, China | | JI Di | 1. School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nangchang 330063, China | | XU Ming-fang | 1. School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nangchang 330063, China |
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| 中文摘要: |
| 钛合金和铝合金的应用在航空航天及汽车制造领域都在逐步增加，而Ti/Al异种金属复合结构中搭接连接无疑是不可避免的连接形式，因此对于钛/铝异种金属点焊技术的研究是非常必要的。由于Ti/Al两种材料的物理和化学性质存在巨大差异，导致两者的焊接尤为困难，目前能实现钛铝异种材料的高质量焊接的方法研究较少。先从钛和铝材料的本身特性入手，阐述目前3种常用的点焊技术：电阻点焊、搅拌摩擦点焊和超声波点焊的研究现状。主要涉及点焊接头成形、焊接参数、接头的组织特征以及力学性能，探究了各个方法的优缺点，并指出Ti/Al异种金属焊接质量的关键主要在于对金属间化合物的有效控制。为Ti/Al异种结构的连接提供合适的设计思路，并为新的连接方法提供借鉴思路。 |
| 英文摘要: |
| The application of titanium alloy and aluminum alloy in aerospace and automobile manufacturing is gradually increasing and lap bonding in Ti/Al dissimilar metal composite structure is undoubtedly an inevitable form of bonding, so it is very necessary to study the spot welding technology of titanium/aluminum dissimilar metal. Because of the great difference in physical and chemical properties between Ti and Al materials, it is very difficult to weld the two materials. At present, there is little research on the method of high quality welding of titanium-aluminum. Therefore, this paper started with the properties of titanium and aluminum materials to expound resistance spot welding, friction stir welding and ultrasonic spot welding. It mainly dealt with the forming of spot welding joints, welding parameters, microstructure characteristics and mechanical properties of the joints, and explored the advantages and disadvantages of each method. It is pointed out that the key to the welding quality of Ti/Al dissimilar metals lies in the effective control of intermetallic compounds. It provides a suitable design idea for the connection of Ti/Al heterogeneous structure, and provides a reference for the generation of new connection methods. |
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