| 铝/钢异种金属电弧辅助激光对接熔钎焊方法 |
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| 引用本文： | 樊丁,王斌,李春玲,黄健康,余淑荣.铝/钢异种金属电弧辅助激光对接熔钎焊方法[J].焊接学报,2015,36(1):15-18,58. |
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| 作者姓名： | 樊丁 王斌 李春玲 黄健康 余淑荣 |
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| 作者单位： | 1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050;兰州理工大学材料科学与工程学院, 兰州 730050 |
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| 基金项目： | 国家自然科学基金资助项目(51465031);甘肃省自然基金资助项目(1308RJZA158);甘肃省青年科技基金计划资助项目(145RJYA305) |
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| 摘 要： | 采用小功率TIG焊电弧辅助激光热源进行5A06铝合金和热镀锌钢ST04Z对接熔钎焊工艺试验,获得表面成形连续、美观的焊缝.采用SEM,EDS,XRD,拉伸试验机、显微硬度计对熔钎焊接头的微观组织和力学性能进行了研究.结果表明,与单纯激光相比,电弧辅助激光热源改变了焊接过程的温度场分布,从而促进液态铝向钢侧的铺展,所得对接接头最大抗拉强度可达到163 MPa,约为5A06铝合金母材抗拉强度的74%,是激光焊接头强度的1.3倍.接头过渡层形成的金属间化合物以脆硬的Fe2Al5,Fe4Al13为主.拉伸断裂起始于脆性的金属间化合物层,终止于韧窝断裂.
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| 关 键 词： | 铝钢 电弧辅助激光 对接 熔钎焊 |
| 收稿时间： | 2014/7/14 0:00:00 |
Method of fusion-brazed butt joint between aluminum alloy and galvanized steel by arc-assisted laser |
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| FAN Ding,WANG Bin,LI Chunlin,HUANG Jiankang and YU Shurong.Method of fusion-brazed butt joint between aluminum alloy and galvanized steel by arc-assisted laser[J].Transactions of The China Welding Institution,2015,36(1):15-18,58. |
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| Authors: | FAN Ding WANG Bin LI Chunlin HUANG Jiankang and YU Shurong |
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| Affiliation: | 1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | Butt fusion-brazed joint between 5A06 aluminum alloy and ST04Z steel sheets was obtained by low power arc-assisted laser. The welding seam had continuous and beautiful surface appearance. The microstructure and mechanical properties of fusion-brazed butt joint were studied by using SEM, EDS, XRD, tensile testing machine and micro hardness tester. The results show that, compared with a single laser, arc-assisted laser could promote the spreading of liquid aluminum to steel by adding arc heat. The maximum tensile strength of butt joint can reach to 163 MPa, about 74% tensile strength of 5A06 aluminum alloy, which also is 1.3 times of the single laser-welded joint strength. Intermetallic compounds in transition layer of butt joint were mainly composed of rigid Fe2Al5 and Fe4Al13. Tensile failure began in the rigid intermetallic compound layer and ended in tenacious fracture. |
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| Keywords: | aluminum steel arc-assisted laser butt fusion-brazing |
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