A novel approach to dissimilar joining of AA7075 to AZ31B by friction stir soldering using Sn intermediate layer

Karimi-Dermani, Omid; Abbasi, Alireza; Roeen, Ghasem Azimi; Nayyeri, Mohammad Javad

doi:10.1080/10426914.2022.2030873

Cited by 5 publications

(1 citation statement)

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“…In dissimilar joining, the IMC layer acts as the site for fracture initiation and propagation and causes brittle damage [27]. Depending on the process and geometry, the distribution of the IMC layer can vary along the interface of dissimilar materials [28]. The mechanisms of joining and IMC formation in T-jointing of dissimilar materials are still not well studied, and there are few publications on this subject, some of which had been mentioned in the previous paragraph.…”

Section: Introductionmentioning

confidence: 99%

A Novel Lap-Butt Joint Design for FSW of Aluminum to Steel in Tee-Configuration: Joining Mechanism, Intermetallic Formation, and Fracture Behavior

Beygi,

Talkhabi,

Mehrizi

et al. 2023

Metals

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The development of new joint configurations suitable for dissimilar materials enables a wider range of applications and allows for an accelerated replacement of traditional structural construction materials by lightweight materials. The T-configuration is a joint configuration that has not been sufficiently studied for use with dissimilar materials, especially when created using the friction stir welding (FSW) process. In this study, a combined lap/butt design was introduced and implemented, seeking to create a T-joint between aluminum and steel. Characterization of the joints showed that FSW could be successfully used to join aluminum and steel in a T-configuration. The formation of intermetallic bonds and kissing bonds was carefully analyzed, and their contribution to the fracture behavior during loading in the skin and stringer directions was studied. Finite element simulation was used to determine the stress state at the interface during loading. The characterization results showed that the intermetallic, as an indicator of metallurgical bonding, is formed when special features are observed in the pattern of material flow. The fractography images showed that the stress state has a major impact on the fracture. The results of the present study can be effectively used to design and fabricate dissimilar joints, taking into account the loading condition.

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Section: Introductionmentioning

confidence: 99%