Multi-track multi-layer friction stir additive manufacturing of AA6061-T6 alloy

Das, Ankan; Medhi, Tanmoy; Kapil, Sajan; Biswas, Pankaj

doi:10.1007/s40964-023-00485-w

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…This might be due to accumulation of reinforced particles or re-stirring was not sufficient to bring the reinforced particles on the top surface. Similar types of results were found by Srivastav et al [31] and Das et al [32].…”

Section: Hardness Analysissupporting

confidence: 90%

Friction stir additive manufactured AA 6061/TiC/GS composite: assessment of microstructural and mechanical properties

Maurya,

Kumar,

Maurya

2024

Phys. Scr.

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Friction stir additive manufacturing (FSAM) technique was used to fabricate the composite. Present investigation deals with the additive manufacturing of three AA 6061 sheets filled with TiC/GS particles in a groove with the variation reinforcement wt.-%. Micro-structural investigation of the fabricated sample was conducted through optical microscopy, SEM and EDS. Optical and SEM results depict the uniform dispersal of the TiC and GS particles in the processed zone. Due to hard TiC and GS particles embedded in AA 6061, an improvement in hardness by 37.2 % was observed for AA 6061/4wt.-%TiC/6wt.-%GS composite. Tensile and compressive strength was enhanced by 25.8% and 11 % for the developed material. Corrosion test and thermal expansion behavior was investigated for the fabricated composite. 0.2 gm was the weight loss observed for the sample kept in NaCl solution for 72 hours. Negligible amount of thermal expansion was noticed for the prepared material. TiC and GS particles, observed in the fractographic image shows the brittle fracture. EDS analysis confirmed the existence of elements like Al, Mg, Mn etc. in the surface of the specimens. The present experimental results were also compared from the previous published work by the various academicians.

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Section: Hardness Analysissupporting

confidence: 90%

Friction stir additive manufactured AA 6061/TiC/GS composite: assessment of microstructural and mechanical properties

Maurya,

Kumar,

Maurya

2024

Phys. Scr.

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Effect of overlapping deposition strategy on microstructure and mechanical properties of Al-clad steel by AFSD

Li,

Wang,

Lai

et al. 2024

Journal of Manufacturing Processes

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Influence of Friction Stir Additive Manufacturing Parameters on Dry Friction and Wear Properties of Al–Mg–Si Alloy's Built Surfaces Fabricated by Sheet Lamination

Das,

Biswas,

Kapil

2024

Journal of Tribology

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In this article, friction-stir additive manufacturing, a solid-state process for rapid fabrication of large components, is employed to investigate laminated Al-Mg-Si alloy blocks. The study delves into microstructural changes, hardness distribution, and wear behavior on two distinct surfaces using various parameters such as rotational speed (800 and 1200 rpm), traverse speed (41 and 82 mm/min), and a 50% pin overlap for block fabrication. Macrographs demonstrate the influence of adjacent toolpath overlap on layer integrity through interfacial mixing and consolidation of plastically deformed material. Within the overall stirred zone, re-stirring effects lead to refined grain formation and the dissolution of Mg2Si precipitates, resulting in an uneven micro-hardness distribution due to varying thermal cycles. Notably, specimens with a traverse speed of 41 mm/min exhibit reduced wear loss, attributed to microstructural changes that enhance resistance to plastic deformation during sliding, thereby improving tribolayer stability. This enhancement is attributed to increased hardness arising from refined grains and the strain hardening effect. Interestingly, the study finds that the horizontal surface of the fabricated blocks displays superior wear resistance compared to the vertical surface, due to the more homogeneous microstructure in individual layers. Further analysis using FESEM and EDS unveils the presence of glaze layers, oxide films, galling surfaces, grooving, trimming impacts, ploughing marks, and the accumulation of wear debris within wide pits and on worn-out pin surfaces. Scar morphology reveals that both abrasive and adhesive wear mechanisms contribute to volumetric losses in the specimens.

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Multi-track multi-layer friction stir additive manufacturing of AA6061-T6 alloy

Cited by 3 publications

References 51 publications

Friction stir additive manufactured AA 6061/TiC/GS composite: assessment of microstructural and mechanical properties

Friction stir additive manufactured AA 6061/TiC/GS composite: assessment of microstructural and mechanical properties

Effect of overlapping deposition strategy on microstructure and mechanical properties of Al-clad steel by AFSD

Influence of Friction Stir Additive Manufacturing Parameters on Dry Friction and Wear Properties of Al–Mg–Si Alloy's Built Surfaces Fabricated by Sheet Lamination

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