Effect of Scroll Pin Profile and Tool Rotational Speed on Mechanical Properties of Submerged Friction Stir Processed AZ31B Magnesium Alloy

Ramaiyan, Sankar; Santhanam, Senthil Kumar Velukkudi; Muthuguru, Puviyarasan

doi:10.1590/1980-5373-mr-2017-0769

Cited by 18 publications

(8 citation statements)

References 33 publications

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“…This indicated a variation in failure behavior resulting from different welding methods and reinforcement strategies [46]. The fractures exhibited a distinctive ductile nature, evident from the abundant presence of circular dimples (denoted by dotted yellow circles) with varying sizes [35,46,47]. These dimples are typically due to plastic deformation and material flow during fracture.…”

Section: Fractographymentioning

confidence: 99%

Introduction of Coal Reinforcing Particles on the Dissimilar FSW AA608/AA5083 Joint via Friction Stir Processing

Zass,

Mabuwa,

Msomi

2023

Metals

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This study investigates the mechanical characteristics of friction stir processed dissimilar joints between AA5083 and AA6082 alloys reinforced with coal particles. Employing friction stir welding (FSW), the mean grain size measured 19.7 μm, but using the FSP technique with coal reinforcement (FSP + Coal) significantly refined the grain size to 8.75 μm. In flexural testing, FSW face samples exhibited failure at 12.7% strain and 535 MPa stress, while FSP + Coal face specimens showed diminished performance at 3% strain and 222 MPa stress. Similar trends were observed in root specimens. For FSW joints, the ultimate tensile strength (UTS) peaked at 145.90 MPa, with the lowest recorded UTS at 93.43 MPa. FSP + Coal joints reached a maximum UTS at 142 MPa and minimum UTS at 104.06 MPa. Fractures in both FSWed and FSPed samples occurred on the AA5083 side. In terms of hardness, FSW joints exhibited 80.33 HV, while FSP + Coal joints displayed a higher hardness of 83.66 HV at the nugget zone. Fracture surface morphology analysis revealed a prominent ductile failure mechanism for both FSWed and FSP + Coal joints. This study provides insight into the enhanced mechanical properties achieved through FSP + Coal processing, offering valuable implications for dissimilar alloy joints in various applications.

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Section: Fractographymentioning

confidence: 99%

Introduction of Coal Reinforcing Particles on the Dissimilar FSW AA608/AA5083 Joint via Friction Stir Processing

Zass,

Mabuwa,

Msomi

2023

Metals

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“…Ramaiyan et al [19] investigated the effects of stepped cylindrical and stepped square pins on the mechanical properties of AZ31B magnesium alloy submerged FSW. The stepped tool with a square pin reveals more recrystallization with refined grains in the nugget zone without any defects when compared to its counterparts.…”

Section: Fig 1 Schematic Of Friction Stir Welding Processmentioning

confidence: 99%

Mathematical and experimental examination of the effect of the stepped pin tool profile on the characterization of AA 6061-T6 underwater friction stir welding

Wakchaure¹,

Thakur²

2022

Metall Mater Eng

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This research paper presents the mathematical model to design a stepped pin profile tool and its durability index. A mathematical model is being developed by considering tools that should generate the same heat as conventional conical tools and stepped tools by varying the shoulder to pin diameter ratio (D/d). Aluminum alloy AA6061-T6 with a thickness of 6 mm fabricated using a butt-type weld configuration and newly developed conical stepped pin profile tools with water as a cooling medium. The result shows that a conical stepped tool shows better mechanical properties of the welded joints compared with a conventional conical tool. When compared to other stepped conical pin profile tools, one with a (D/d) of 3 has superior mechanical and microstructural properties and as the D/d ratio increases, the tool pin durability index falls.

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“…Tensile strength and fracture behaviour showed drastic improvement as compared to the original AZ31B Magnesium alloy. 29 To improve the environment in which people may live, many environmental issues that are constantly emerging must be addressed. One of them is animal waste bone since the decomposition process is extremely slow and the unpleasant odour it produces throughout the region is quite dangerous.…”

Section: Introductionmentioning

confidence: 99%

“…Tensile strength and fracture behaviour showed drastic improvement as compared to the original AZ31B Magnesium alloy. 29…”

Section: Introductionmentioning

confidence: 99%

Animal waste powder utilization for Al6061/SiC composite using friction stir processing with scroll shoulder hexagonal tool

Gupta

Singh

Kumar³

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nowadays, a lot of animal waste is available in the world. To reduce the number of animal waste particles, it is used as reinforcement, reducing the cost of reinforcement without affecting the present qualities. In this research, AA6061 is used because of its lower weight-to-strength ratio whereas to reduce the cost of reinforcement, chicken bone powder (CBP) with varying percentages (2%, 4%, and 6%) and 2% SiC is used. A hexagonal tool with a scroll shoulder is used for the fabrication of AA6061/SiC/CBP hybrid composite. Microstructural analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), fractography analysis, tool analysis, tensile strength, and hardness are used for the analysis of AA6061/SiC/CBP hybrid composite. Microstructural analysis shows that the grain size of SiC and CBP particles is reduced from 40 to 4.6 μm. Homogenous distribution of the reinforcement with no agglomeration is observed in SEM analysis. Fractography shows the presence of dimples and micro-dimples which indicates that tensile strength increases whereas XRD analysis investigates that there are no unwanted contaminants present in the AA6061/SiC/CBP hybrid composite which can be harmful during machining. Tensile strength and hardness of AA6061/SiC/CBP hybrid composite increase up to 29.28% and 18.22%, respectively, on increasing the percentage of chicken bone powder in reinforcement.

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Effect of Scroll Pin Profile and Tool Rotational Speed on Mechanical Properties of Submerged Friction Stir Processed AZ31B Magnesium Alloy

Cited by 18 publications

References 33 publications

Introduction of Coal Reinforcing Particles on the Dissimilar FSW AA608/AA5083 Joint via Friction Stir Processing

Introduction of Coal Reinforcing Particles on the Dissimilar FSW AA608/AA5083 Joint via Friction Stir Processing

Mathematical and experimental examination of the effect of the stepped pin tool profile on the characterization of AA 6061-T6 underwater friction stir welding

Animal waste powder utilization for Al6061/SiC composite using friction stir processing with scroll shoulder hexagonal tool

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