Friction stir butt-welding of roll cladded aluminum thin sheets: effect of microstructural and texture changes on mechanical properties

Basak, Soumyabrata; Mondal, Mounarik; Gao, Kun; Hong, Sung-Tae; Anaman, Sam Yaw; Cho, Hoon-Hwe

doi:10.1016/j.msea.2021.142490

Cited by 19 publications

(9 citation statements)

References 53 publications

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“…Identical particle breakdown has also been reported by Sung et al, where they found small fragments of AA 3003 into AA 6013 during the course of multilayer FSW [43]. The particles are swirled and fractured by the combination of tool compression and shearing engendered through FSP tool [44]. Further evaluation of the microstructures within the PZ as displayed in Fig.…”

Section: Macro and Microstructure: Particle And Grain Refinement/reor...supporting

confidence: 70%

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

et al. 2022

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The present endeavour is to augment mechanical attributes via friction stir processing (FSP) in hypereutectic aluminium–silicon castings by the means of microstructural modifications and defects reduction. Wherein, the study proceeds with mainly two approaches namely, alteration in tool revolution (TR) and the number of FSP passes. The prepared specimens were evaluated investigating volume fraction of porosities, microstructural characterizations and microhardness. Therefrom, the specimen with highest number of passes delivered most uniform properties resulting from the reduction in casting porosities and refined silicon particle uniform distribution throughout friction stir processed zone. This endeavour may be considered as a footstep towards more industrial readied material transformation.

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Section: Macro and Microstructure: Particle And Grain Refinement/reor...supporting

confidence: 70%

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

et al. 2022

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“…the compression of the stirring head, while the HAZ not only contains some recrystallized structures but also some residual rolled textures due to the heat influence and partial stirring. Comparing the texture types and contents of different zones based on different parameters, it was found that the recrystallization texture {001} <110> in the NZ decreases with an increase in the travel speed, and the residual rolling texture S {123} <634> increases in the HAZ [27]. In summary, in the NZ, there is complete dynamic recrystallization, forming fine equiaxial grains; the HAZ forms coarse grains along the repair direction due to the thermo-mechanical coupling.…”

Section: Microstructure Evolutionmentioning

confidence: 99%

Microstructure Evolution and Mechanical Properties of 7A52 Aluminum Alloy Thin Sheet Repaired with Friction Stir Surfacing

Li,

Shi,

Han

et al. 2024

Materials

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A solid-state repair technique based on surface friction welding is investigated in depth to achieve excellent mechanical properties of damaged 7A52 aluminum alloy. The results show that the yield strength and tensile strength along the repair direction are 436 MPa and 502 MPa, respectively, at a rotational speed of 1400 rpm and a travel speed of 300 mm/min, which are about 157.9% and 129.7% of those before the defects were repaired, respectively, while the elongation is 17.2% compared to the base material. Perpendicular to the repair direction, the yield strength and tensile strength are 254 MPa and 432 MPa, which are 111.4% and 129.7% of those before the defects were repaired, respectively, while the elongation is 11.8% compared to the base material. The mechanical properties of the repaired areas are still improved compared to those of the defect-free sheets. On the one hand, this is attributed to the dynamic recrystallization of the nugget zone due to the thermo-mechanical coupling, resulting in the formation of a fine, equiaxed grain structure; on the other hand, the precipitated Mg2Si phase, which is incoherent within the base material, transforms into the Al12(Fe, Mn)3Si phase, as well as the precipitation of the Al6Mn phase and η′ phase, resulting in the enhancement of the properties. The material fracture at the junction of the nugget zone and the heat-affected zone occurs after repair, which is attributed to the significant difference in the texture of the nugget zone and the heat-affected zone, as well as to the stress concentration at the junction.

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Section: Introductionmentioning

confidence: 99%

“…Differences in melting temperatures, coefficients of thermal expansion, and other metallurgical dissimilarities of dissimilar metal alloys are the significant aspects that make the fusion joining of dissimilar materials difficult. [4][5][6] Solid-state joining has become a promising substitute for conventional fusion welding of similar or dissimilar materials based on its ability to address critical aspects of fusion welding, specifically possible defects that can be formed during the melting and solidification of the joining region. During solid-state joining, joining occurs with plastic deformation of the materials below the melting point.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Joining and Forming of Dissimilar Steels by Electrically Assisted Pressure Joining

Thuong

Lee

Bui

et al. 2022

steel research int.

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In the present study, simultaneous joining and forming of dissimilar steels Q235B (ball) and SCM435 (stud) by electrically assisted pressure joining (EAPJ) are experimentally investigated. The target product is intended with a dust‐cover ring in the stud head, then the electrodes and the stud head are designed accordingly so that the deformed stud head can fill the electrode cavity. In EAPJ, compressive deformation and pulsed electric current are simultaneously applied to the workpieces to create diffusion bonding. As a result, the sound solid‐state joints are successfully fabricated by EAPJ, while a target geometry is also successfully formed. In the bending test, the fabricated ball stud is broken through the ball, and the maximum bending load is higher than the target value for commercial applications. The microstructure analysis and hardness test show that the progress suggested in the present study can cause grain refinement, induce tempered martensite, and increase the portion of polygonal ferrite in the deformed zone (DZ), the joining zone (JZ), and the thermal‐mechanically affected zone (TMAZ), respectively. The results of the present study confirm that the concept of EAPJ is applicable to the simultaneous joining and forming of dissimilar steels.

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Friction stir butt-welding of roll cladded aluminum thin sheets: effect of microstructural and texture changes on mechanical properties

Cited by 19 publications

References 53 publications

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

Microstructure Evolution and Mechanical Properties of 7A52 Aluminum Alloy Thin Sheet Repaired with Friction Stir Surfacing

Simultaneous Joining and Forming of Dissimilar Steels by Electrically Assisted Pressure Joining

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