Influence of Tool Tilt Angle on the Formation of Friction Stir Processing Zone in Cast Magnesium Alloy ZK60/SiCp Surface Composites

Vigneshkumar, M.; Padmanaban, G.; Balasubramanian, V.

doi:10.1007/s13632-018-0507-5

Cited by 25 publications

(7 citation statements)

References 28 publications

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“…The starting grain size was measured as 166.5 μm and after FSP, the grain size was observed as decreased to 12.581 μm. During FSP of AZ91, dynamic recrystallization refines the microstructure of the material and reduces the size of the grains and increases the hardness of the material [33]. [8,14].…”

Section: Resultsmentioning

confidence: 99%

Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing

Patle

Sunil²,

Dumpala

2020

Mater. Res. Express

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In the present study, the surface of AZ91 Mg alloy was modified by incorporating boron carbide (B 4 C) particles using friction stir processing (FSP). Sliding wear behavior of these developed AZ91/B 4 C surface composites was investigated against AISI 52100 steel ball using linear reciprocating tribometer. Hardness tests reveal that the hardness of the fabricated surface composite (∼137.47 HV) is significantly increased compared to the base metal (∼95.5 HV) due to the presence of B 4 C particles.Wear tests were conducted on the samples at two different sliding velocities; 0.06 m s −1 and 0.12 m s −1 . It was observed that at higher sliding velocity of 0.12 m s −1 , AZ91/B 4 C surface composite exhibited lower friction coefficient value in comparison to that of the base metal, whereas it is vice versa at the low sliding velocity of 0.06 m s −1 . However, surface composites exhibited superior wear resistance at both the sliding velocities, in comparison to that of the base metal. Scanning electron microscopy and energy-dispersive spectroscopy analysis of the wear tracks were carried out to understand the wear mechanisms. From the observations, a combination of abrasive, adhesive, and oxidative wear mechanisms were found to be prominent.

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Section: Resultsmentioning

confidence: 99%

Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing

Patle

Sunil²,

Dumpala

2020

Mater. Res. Express

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“…It is an important parameter that significantly affects the generation of heat, movement of material, and mixing of material behind the tool pin. Optimal tilt angle induces fine recrystallised homogeneous grains and thus improved mechanical properties [21]. v.…”

Section: Friction Stir Engineering (Fse)mentioning

confidence: 99%

Overcoming challenges in using magnesium-based materials for industrial applications using friction-stir engineering

Maqbool

Khan

Siddiquee

et al. 2023

Materials Science and Technology

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Using lightweight materials reduces fuel consumption and carbon emissions. Magnesium, a lightweight structural material with interesting properties, performs well during processing and application. Poor ductility of Mg alloys hinders their application in material-forming industries. Grain size reduction significantly improves the ductility in comparison with unprocessed material. Friction stir engineering (FSE) not only provides refinement, homogenisation, and densification of the microstructure, but also helps in eliminating the cast microstructural defects, and fragmentation of the brittle and network-like phases (Mg17(Al, Zn)12, Al8Mn5) and achieves high-strain rate super plasticity. The current review addresses the challenge of poor ductility and provides insights of the FSE on Mg-based materials to improve ductility by various methods, including the development of metallic foam.

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“…In sample A2, due to the size of the weld zone caused by the increase in the tool offset and the decrease in the concentration of plastic flow, the bottom surface of the sample has a wormhole defect. In general, the presence of a wormhole defect leads to the formation of macro cracks in this area and greatly reduces the mechanical properties of the welded joint [58][59][60][61][62]. The use of AP-FSW and RP-FSW techniques leads to significant modifications in different welding areas.…”

Section: Surface Morphology and Macrographs Of Welding Specimensmentioning

confidence: 99%

Investigation of Mechanical and Microstructural Properties of Welded Specimens of AA6061-T6 Alloy with Friction Stir Welding and Parallel-Friction Stir Welding Methods

et al. 2021

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The present study investigates the effect of two parameters of process type and tool offset on tensile, microhardness, and microstructure properties of AA6061-T6 aluminum alloy joints. Three methods of Friction Stir Welding (FSW), Advancing Parallel-Friction Stir Welding (AP-FSW), and Retreating Parallel-Friction Stir Welding (RP-FSW) were used. In addition, four modes of 0.5, 1, 1.5, and 2 mm of tool offset were used in two welding passes in AP-FSW and RP-FSW processes. Based on the results, it was found that the mechanical properties of welded specimens with AP-FSW and RP-FSW techniques experience significant increments compared to FSW specimens. The best mechanical and microstructural properties were observed in the samples welded by RP-FSW, AP-FSW, and FSW methods, respectively. Welded specimens with the RP-FSW technique had better mechanical properties than other specimens due to the concentration of material flow in the weld nugget and proper microstructure refinement. In both AP-FSW and RP-FSW processes, by increasing the tool offset to 1.5 mm, joint efficiency increased significantly. The highest weld strength was found for welded specimens by RP-FSW and AP-FSW processes with a 1.5 mm tool offset. The peak sample of the RP-FSW process (1.5 mm offset) had the closest mechanical properties to the base metal, in which the Yield Stress (YS), ultimate tensile strength (UTS), and elongation percentage (E%) were 76.4%, 86.5%, and 70% of base metal, respectively. In the welding area, RP-FSW specimens had smaller average grain size and higher hardness values than AP-FSW specimens.

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Influence of Tool Tilt Angle on the Formation of Friction Stir Processing Zone in Cast Magnesium Alloy ZK60/SiCp Surface Composites

Cited by 25 publications

References 28 publications

Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing

Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing

Overcoming challenges in using magnesium-based materials for industrial applications using friction-stir engineering

Investigation of Mechanical and Microstructural Properties of Welded Specimens of AA6061-T6 Alloy with Friction Stir Welding and Parallel-Friction Stir Welding Methods

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Influence of Tool Tilt Angle on the Formation of Friction Stir Processing Zone in Cast Magnesium Alloy ZK60/SiCp Surface Composites

Cited by 25 publications

References 28 publications

Sliding wear behavior of AZ91/B4C surface composites produced by friction stir processing

Sliding wear behavior of AZ91/B4C surface composites produced by friction stir processing

Overcoming challenges in using magnesium-based materials for industrial applications using friction-stir engineering

Investigation of Mechanical and Microstructural Properties of Welded Specimens of AA6061-T6 Alloy with Friction Stir Welding and Parallel-Friction Stir Welding Methods

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Product

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Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing

Sliding wear behavior of AZ91/B₄C surface composites produced by friction stir processing