通过减少脆性金属间化合物提高铝镁合金异种摩擦搅拌焊接接头的拉伸性能

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-11-28 DOI:10.1515/ijmr-2021-8690

Mukesh Kumar, Ashish Das, R. Ballav, Niraj Kumar, Keshav K. Sharma

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引用次数: 0

摘要

摘要在当前的研究工作中，采用锌层间搅拌摩擦焊接技术，在最佳工艺参数下连接了镁 AZ61（前进侧）和铝 6061-T6（后退侧）合金。这项工作的目的是提出一种有效的替代方法，以克服与铝/镁接头相关的问题。本文研究了锌箔（0.2 毫米）对焊接表面（3 毫米铝/镁板）、金属间化合物特性、微观结构、断裂面和接头强度的影响。详细研究了铝/镁和铝/锌/镁搅拌摩擦焊接接头中金属间化合物的出现和性质。通过 X 射线衍射分析证实，在铝/镁搅拌摩擦焊缝中使用锌可抑制脆性铝镁金属间化合物的出现，并通过引入锌夹层促进搅拌区中镁锌金属间化合物的形成。此外，与铝/镁搅拌摩擦焊接接头（153.33 兆帕）相比，铝/锌/镁搅拌摩擦焊接接头的平均拉伸性能（181.33 兆帕）提高了 18.26%。这项研究成果前景广阔，为提高铝/镁异种接头强度提供了另一条具有成本效益的技术途径。

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Enhancing the tensile performance of Al/Mg alloy dissimilar friction stir welded joints by reducing brittle intermetallic compounds

Abstract In this current research work, magnesium AZ61 (Advancing Side) and aluminum 6061-T6 (Retreating Side) alloys were joined using the zinc interlayer friction stir welding technique at the optimum process parameters. The aim of this work is to propose an effective alternative to overcome issues related to aluminum/magnesium joints. This article investigates the effects of zinc foil (0.2 mm) on the weld surface (3 mm aluminum/magnesium plates), intermetallic compound characteristics, microstructure, fracture surface and strength of joint. The emergence and nature of intermetallic compounds during aluminum/magnesium and aluminum/zinc/magnesium friction stir welded joints were studied in detail. As can be seen from the findings, using zinc in aluminum/magnesium friction stir welded joints inhibits the emergence of brittle aluminum–magnesium intermetallic compounds and promotes the formation of magnesium–zinc intermetallic compounds in the stir zone by introducing the zinc interlayer, confirmed through X-ray diffraction analysis. Furthermore, the average tensile performance (181.33 MPa) of friction stir welded aluminum/zinc/magnesium joints was enhanced up to 18.26 % compared to aluminum/magnesium friction stir welded joints (153.33 MPa). The promising results of this research establish an alternative route with a cost-effective technique to enhance the aluminum/magnesium dissimilar joint strength.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.