镦压对6082铝合金/304不锈钢摩擦焊接接头组织和性能的影响

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2021-01-01 DOI:10.1051/metal/2021067

Gui-peng Lu, Li-zhe Zhao, Wei Liu, Yu-meng Sun, W. Gong

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引用次数: 0

摘要

通过连续驱动摩擦焊接，实现了6082铝合金与304不锈钢的异型连接。采用光学显微镜(OM)、扫描电镜(SEM)和x射线衍射仪(XRD)对接头的微观组织进行了研究。在连续驱动焊接过程中，在界面处观察到金属间化合物(IMC) Fe2Al5相，探讨了IMC的形成机理，并建立了相应的分析模型。当扰流压力在6 ~ 10 MPa范围内时，元件扩散距离随扰流压力的增大而增大。随着镦压压力的增大，接头的抗拉强度先增大后减小。接头的最大抗拉强度可达234 MPa，接头的拉伸断裂呈现脆韧混合断裂特征。

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Effect of the upset pressure on Microstructure and Properties of Friction Welded Joints of 6082 aluminum alloy/304 stainless steel

The dissimilar connection between 6082 aluminum alloy and 304 stainless steel was realized by continuous drive friction welding. Microstructures of the joint were studied by optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). In the process of continuous drive welding, the intermetallic compounds (IMCs) Fe2Al5 phase was observed at the interface, the formation mechanism of IMC was discussed, and the corresponding analysis model was established. When the upset pressure in the range of 6–10 MPa, the element diffusion distance increases with the increase of upset pressure. The tensile strength of the joint increased firstly and then decreased with the increase of upset pressure. The joint’s maximum tensile strength can reach 234 MPa, and tensile fracture of the joint exhibited brittle-tough mixed fracture characteristics.

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.