6061铝合金与316不锈钢异种搅拌摩擦焊搭接接头的力学性能

Q4 Materials Science

Welding International Pub Date : 2023-02-01 DOI:10.1080/09507116.2023.2190475

Huy Huu Ho, Hao Dinh Duong, Quan Minh Nguyen, Tra Hung Tran

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引用次数: 0

摘要

摘要采用搅拌摩擦焊的方法制备了AA6061和316不锈钢异种搭接接头。揭示了焊接速率对组织、接头界面和力学性能的影响。在具有自由氧化物层的低焊接速率下发现了波界面图案。随着氧化膜的形成，界面在高焊接速率下变得平坦。界面上形成了扩散层和金属间化合物层，随着焊接速度的增加，其厚度减小。在75的焊接速率下获得了最高的接头强度 mm/min，但随着焊接速率的增加而显著降低。强度与结合面积、扩散厚度和界面形态显著相关，而与IMCs层厚度无关。在较低的焊接速率下，接头通过韧性行为断裂，在316不锈钢的断裂表面上发现了大量的凹坑。

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Mechanical performance of dissimilar friction stir welded lap-joint between aluminium alloy 6061 and 316 stainless steel

Abstract The dissimilar lap-joint of the AA6061 to 316 stainless steel was produced by friction stir welding. Changing microstructure, joint interface, and mechanical performances via welding rate were revealed. A wave interface pattern was found at the low welding rate with a free oxide layer. The interface became flat at the high welding rate with the oxide film formation. The diffusion and intermetallic compounds (IMCs) layers were formed on the interface and their thickness decreased via increasing the welding rate. The highest joint strength was obtained at the welding rate of 75 mm/min but strongly reduced with growing the welding rate. The strength was dramatically correlated with the bonding area, diffusion thickness and interface morphology instead of the IMCs layer thickness. At the low welding rate, the joint was fractured via ductile behaviour with a lot of dimples found on the fracture surface of 316 stainless steel.

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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.