采用双束辐照的钢/铝合金异种接头高速热丝激光钎焊技术

Q4 Materials Science

Welding International Pub Date : 2023-07-05 DOI:10.1080/09507116.2023.2230647

Tamaki Ito, J. Choi, Motomichi Yamamoto, K. Taniguchi, Y. Okita, H. Matsuda

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引用次数: 0

摘要

摘要为实现汽车车身的轻量化，对钢/铝合金异种接头的需求不断增加。然而，众所周知，用传统焊接方法连接两种金属时，会在界面上产生脆性金属间化合物（IMC），严重降低接头强度。本文提出了采用双光斑辐照的热丝激光钎焊工艺，并对其条件进行了优化，以实现钢/铝合金异种组合搭接接头的高速钎焊和高接头强度。在光斑两端对齐的圆形（ϕ5）和矩形（5 × 11）激光束的双光斑实现了高达 6 米/分钟的高速钎焊、稳定的钎焊现象和良好的焊珠外观。利用优化条件制造的接头实现了 2 μm 以下的超薄 IMC 厚度和超过基体钢板屈服强度的高接头强度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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High-speed hot-wire laser brazing technology for steel/aluminum alloy dissimilar joint using twin beam irradiation

Abstract The demand for steel/aluminum alloy dissimilar joints has increased for light-weighting the automobile body. However, it is well known that joining both metals by conventional welding methods, the brittle intermetallic compound (IMC) is generated at the interface, and it significantly deteriorates the joint strength. In this paper, the hot-wire laser brazing process using the twin-spot irradiation was proposed and its conditions were optimized to achieve the high brazing speed and the high joint strength on a lap-fillet joint of the steel/aluminum alloy dissimilar combination. The twin spots of a circle (ϕ5) and rectangular (5 × 11) laser beams aligned at spot ends achieved the high brazing speed up to 6 m/min, stable brazing phenomena and sound bead appearance. The joints fabricated using the optimized conditions realized the very thin IMC thickness under 2 μm and high joint strength over the yield strength of the base steel sheet.

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来源期刊

Welding International Materials Science-Metals and Alloys

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： Welding International provides comprehensive English translations of complete articles, selected from major international welding journals, including: Journal of Japan Welding Society - Japan Journal of Light Metal Welding and Construction - Japan Przeglad Spawalnictwa - Poland Quarterly Journal of Japan Welding Society - Japan Revista de Metalurgia - Spain Rivista Italiana della Saldatura - Italy Soldagem & Inspeção - Brazil Svarochnoe Proizvodstvo - Russia Welding International is a well-established and widely respected journal and the translators are carefully chosen with each issue containing a balanced selection of between 15 and 20 articles. The articles cover research techniques, equipment and process developments, applications and material and are not available elsewhere in English. This journal provides a valuable and unique service for those needing to keep up-to-date on the latest developments in welding technology in non-English speaking countries.