Relationship between micro-structure and mechanical properties of dissimilar aluminum alloy plates by friction stir welding

Sarsılmaz, Furkan

doi:10.2298/tsci170825271s

Cited by 9 publications

(14 citation statements)

References 28 publications

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“…The values of YS, TS and DEF can be better observed in Figure 12. It is possible to notice a reduction in YS and TS in relation to the BM, which are results already expected, due to the growth and elongation of grains in the HAZ 31 .…”

Section: Tensile Strength Of Welded Jointssupporting

confidence: 77%

Influence of Welding Parameters on the Mechanical Properties and Microstructure of 7075-T651 Aluminum Alloys Welded Joints Performed by FSW Process

et al. 2022

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Aluminum alloys of 7xxx series have excellent characteristics and mechanical properties, being widely used in primary aircraft structures. However, the welding of these alloys by conventional arc welding processes results in an excessive mechanical resistance degradation and increasing in residual stress level. In this context, Friction Stir Welding (FSW) process has received attention in recent years mainly because it does not reach the materials melting point during the process. This work aims to evaluate the influence of the tool rotation and welding speed on microstructure and mechanical properties of AA 7075-T651 aluminum alloy welded joints by FSW process. Therefore, four welded joints obtained with different welding and tool rotation speed were subjected to tensile and microhardness tests. The microstructures of the welded joints were evaluated through analysis by optical microscopy and Scanning Electron Microscopy (SEM). The retreating side of the welded joints showed a higher occurrence of microstructural welding defects. Welded joints with yield strength (YS) 50% higher than those of base metal and with ultimate tensile strength up to 380 MPa were achieved.

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Section: Tensile Strength Of Welded Jointssupporting

confidence: 77%

Influence of Welding Parameters on the Mechanical Properties and Microstructure of 7075-T651 Aluminum Alloys Welded Joints Performed by FSW Process

et al. 2022

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“…The proper FSWed joints of dissimilar 2024-T3/6063-T6 alloys (Table 3), studied by Sarsilmaz [275] were obtained when 2024 alloy was placed on AS while 6063 alloy was placed on RS of joint.…”

Section: Positioning Of Alloymentioning

confidence: 99%

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Derbiszewski,

Obraniak,

Rylski

et al. 2024

Preprint

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To fulfil a need of limitation automotive emissions the reduction of vehicle weight is widely recommended and achieved in many ways, both by the construction of individual elements of the vehicle, and by the selection of light materials including Al alloys. Connecting these elements with each other and with elements made of iron alloys can be realized, inter alia, by welding or stir welding. However, the quality of the welds obtained varies widely and depends on many design, operational and environmental factors. The present study focused on a review of various welding technics used to joint both similar and dissimilar Al alloys utilized in automotive industry, the effect of various process parameters on welds quality, and phenomena appeared in such welds..

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“…The conditions during the friction stir welding are very complex, and include pronounced deformation (with an emphasis on plastic strains), high temperatures and flowing of the heated and softened material, as considered in many studies, including [10][11][12][13][14][15][16][17][18][19]. Knowledge about these conditions, which includes analytical and numerical calculations, can significantly decrease the amount of experimental work and enable optimization of the FSW process on a wide range of materials.…”

Section: Fig 1 Schematic Illustration Of Fsw Process [9]mentioning

confidence: 99%

Influence of temperature and plastic deformation on AA2024 T3 friction stir welded joint microstructure

et al. 2023

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This paper deals with analysis and comparison of the equivalent plastic strain and temperature fields in the aluminium alloy 2024 T3 welded joint, with macro/microstructure appearance and hardness profile. In the alloys hardened by heat treatment, grain size and particle size of the precipitate are functions of equivalent plastic strain, strain rate and temperature. By analyzing the equivalent plastic strain fields and temperature fields it is possible, to some extent, to capture the effect of welding parameters and thermo-mechanical conditions on grain structure, and therefore hardness and strength in the welded joint. A coupled thermo-mechanical model is applied to study the material behaviour during the linear welding stage of friction stir welding (FSW). Three-dimensional finite element (FE) model has been created in ABAQUS/Explicit software using the Johnson-Cook material law. The values of thermo-mechanical quantities during the welding stage are obtained from the numerical model and shown as distributions across the joint. The obtained values of these quantities are related to the microstructure of the joint zones and hardness distribution, and this relation is discussed.

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Relationship between micro-structure and mechanical properties of dissimilar aluminum alloy plates by friction stir welding

Cited by 9 publications

References 28 publications

Influence of Welding Parameters on the Mechanical Properties and Microstructure of 7075-T651 Aluminum Alloys Welded Joints Performed by FSW Process

Influence of Welding Parameters on the Mechanical Properties and Microstructure of 7075-T651 Aluminum Alloys Welded Joints Performed by FSW Process

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Influence of temperature and plastic deformation on AA2024 T3 friction stir welded joint microstructure

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