Friction stir spot welding of aluminium to steel by rotating tool without probe

Aota, Kinya; Takahashi, Makoto; Ikeuchi, Kenji

doi:10.1080/09507110902843057

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…The development of innovative joining techniques is a relevant aspect for the aeronautic applications of Al alloys. Recently, Friction Stir Welding (FSW) gained increasing attention in the aerospace industry (e.g., airframes, wings, fuselages, fuel tanks), and a lot of research efforts have been devoted to one of its variants, namely, Friction Stir Spot Welding (FSSW) [58][59][60][61][62][63][64][65]. This method is an alternative to resistance welding, riveting, and adhesive bonding in the fabrication of aircraft structures, and allows the joining of components made of Al alloys with lower costs and better strength than conventional techniques.…”

Section: Advanced Joining Techniques For Aluminum Alloysmentioning

confidence: 99%

Alloys for Aeronautic Applications: State of the Art and Perspectives

Gloria

Montanari

Richetta

et al. 2019

Metals

153

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In recent years, a great effort has been devoted to developing a new generation of materials for aeronautic applications. The driving force behind this effort is the reduction of costs, by extending the service life of aircraft parts (structural and engine components) and increasing fuel efficiency, load capacity and flight range. The present paper examines the most important classes of metallic materials including Al alloys, Ti alloys, Mg alloys, steels, Ni superalloys and metal matrix composites (MMC), with the scope to provide an overview of recent advancements and to highlight current problems and perspectives related to metals for aeronautics. Horizontal stabilizersLower Compression CYS, E, DT Upper Tension DT, YS As shown in Figure 2, engines consist of cold (fan, compressor and casing) and hot (combustion chamber and turbine) sections. The material choice depends on the working temperature. The components of cold sections require materials with high specific strength and corrosion resistance. Ti and Al alloys are very good for these applications. For instance, the working temperature of the compressor is in the range of 500-600 °C, and the Ti-6Al-2Sn-4Zr-6Mo alloy (YS = 640 MPa at 450 °C; excellent corrosion resistance) is the most commonly used material.For the hot sections, materials with good creep resistance, mechanical properties at high temperature and high-temperature corrosion resistance are required, and Ni-base superalloys are the optimal choice.

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Section: Advanced Joining Techniques For Aluminum Alloysmentioning

confidence: 99%

Alloys for Aeronautic Applications: State of the Art and Perspectives

Gloria

Montanari

Richetta

et al. 2019

Metals

153

View full text Add to dashboard Cite

show abstract

“…Also Mahto et al (2016) studied the FSSW parameters effect on the mechanical properties of AA 6061-T6 and stainless steel spot joints and observed the presence of intermetallic compounds at the interface through metallurgical bonds. Welding time and rotational speed are main factors for increasing friction heating resulting in formation of a brittle intermetallic compound (IMC) by interface reaction between aluminum and ferrous metals (Aota, Takahashi and Ikeuchi, 2010;Abd et al, 2020). So, it is very important to control and decrease the welding time to a few seconds.…”

Section: Introductionmentioning

confidence: 99%

Effect of dwelling time and plunge depth on the joint properties of the dissimilar friction stir spot welded aluminum and steel

Ahmed

Abdul-Maksoud

Seleman

2021

JER is an international, peer-reviewed journal that publishes f

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Sound joints of a far apart property, pure aluminum and mild steel, dissimilar materials were obtained by friction stir spot welding (FSSW) solid state joining process. Sheets of 2 mm thickness were overlapped and fixed with a fixture device then welded. Welding parameters that produced the sound joint were identified. Joints microstructure and mechanical properties were investigated. A microstructural investigation has revealed a creation of mechanical interlocking and discontinuous formation of the intermetallic compounds found at the interface. The intermetallic compound (IMC) layer thickness ranged from 6 μm to 17 μm with the optimum condition specimen, 800 rpm and 5 Sec dwell time. Tensile–shear test showed that failure load has increased with increasing tool plunge depth and rotational speed. After the optimum value of rotational speed, the shear failure load decreased. The maximum shear failure load of 2.15 KN attained at 800 rpm and 2.4 mm plunge depth.

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“…It should be mentioned that the interface was free from IMC. Aota et al claimed that increasing of plunge depth and dwell time changed the failure mode from interface to plug in dissimilar FSSW of AA1100‐H24 and SPCC carbon steel using a pinless tool.…”

Section: Introductionmentioning

confidence: 99%

Failure mechanisms of friction stir spot welds of AA6061‐T6/DP590 steel during tensile‐shear testing

Niroumand-Jadidi

Kashani-Bozorg

2019

Fatigue Fract Eng Mat Struct

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The tensile‐shear test was conducted for the evaluation of shear load and failure mechanisms of dissimilar friction stir spot weldments of AA6061‐T6/DP590 dual‐phase steel sheets. The joints were fabricated using a penetrated pin into the steel sheet (lower member). Such design resulted in the formation of a hook at the joint interface and an intermetallic compound layer (IMC) between the upper part of the hook and Al‐side. A maximum tensile‐shear load of ~2950 N was measured for the joint fabricated using a heat input of ~10 kJ; a lower strength was noted by varying the heat input. Partial plug was the failure mechanism in all joints. However, three different types of crack propagation paths were found depending on the heat input: along the interface between 6061 Al and IMC layer, thru 6061 Al near the joint interface, or within the IMC layer using relatively low, moderate, and high heat inputs.

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Friction stir spot welding of aluminium to steel by rotating tool without probe

Cited by 8 publications

References 5 publications

Alloys for Aeronautic Applications: State of the Art and Perspectives

Alloys for Aeronautic Applications: State of the Art and Perspectives

Effect of dwelling time and plunge depth on the joint properties of the dissimilar friction stir spot welded aluminum and steel

Failure mechanisms of friction stir spot welds of AA6061‐T6/DP590 steel during tensile‐shear testing

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