Impact of post weld heat treatment on mechanical and microstructural properties of underwater friction stir spot welded 6061 aluminium alloy

Shekhawat, Ravindra S.; Nadakuduru, Vijay N.

doi:10.1016/j.matpr.2021.09.207

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…On the contrary, FSW showed significantly minimum deformation driven by mechanical and thermal stresses because the base metal's melting point is higher than the welding temperature [5,6]. Due to FSW's apparent low processing temperature, several welding imperfections such as deformation, solidification cracking, blowholes, spatters, and porosity can be reduced as an advantage to increase weld quality and joint quality [7,8]. In other words, the FSW process is an efficient method of welding for combining a wide range of metals and alloys that are similar and dissimilar in diverse fields of application [9,10].…”

Section: Introductionmentioning

confidence: 99%

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

M.H. Osman,

Norfauzi Tamin

2023

JMES

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This study presents the tensile strength and surface roughness resulting from friction stir welding (FSW) on the lap joint method using AA 6061 –T6. FSW is conducted by comparing three different tool pin shapes: hexagon, thread, and square. Overlap welding using the FSW method is challenging if machine parameters, such as spindle speed and feed rate, are incompatible. The experiment was conducted using a conventional milling machine with a spindle speed of 1400 -1750 rpm and a feed rate of 20 – 30 mm/min. The results show that a spindle speed of 1750 rpm and a feed rate of 30 mm/min using a square tool pin results in 83.5088 MPa ultimate tensile strength and 0.85 µm surface roughness (Ra), which is much better than hexagon and thread type tool pins. In addition, the overall results on all three tool pin shapes show that higher processing parameters increase tensile strength and surface roughness. This study revealed the effect of parameters on AA6061 –T6 and the resulting implications of mechanical strength and surface roughness.

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Section: Introductionmentioning

confidence: 99%

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

M.H. Osman,

Norfauzi Tamin

2023

JMES

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Microstructure and mechanical properties of probeless friction stir spot welded Al Li alloy joints via fast electric pulse treatment: A comparative study

Fan,

Chu,

Yang

et al. 2023

Materials Characterization

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Study on Microstructure Evolution and Mechanical Properties of Al5083 Joint Obtained from Friction Stir Spot Welding: Effect of Vibration and Plunge Depth

Bagheri¹,

Abbasi²,

Sharifi³

2022

Engineering Principles - Welding and Residual Stresses

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In this investigation, the vibration of the workpiece is accompanied by the rotating movement of the tool during friction stir spot welding. The method is entitled to friction stir spot vibration welding (FSSVW). Al5083 alloy samples are joined by two welding methods, friction stir spot welding (FSSW), and FSSVW under different plunge depths (DP). The microstructures and fracture surface of the welded zones were analyzed by optical microscopy (OM) and scanning electron microscopy (SEM), respectively. Analyzing the microstructures and mechanical properties of welded samples in both methods revealed that weld region grain size reduced and its hardness increased as the mechanical vibration and high plunge depth have been applied. In addition, the strength and ductility values of FSSV welded specimens with high plunge depth were higher than those produced by FSSW under low plunge depth. Furthermore, it was concluded that the effect of vibration on microstructure and mechanical properties of welded specimens increase as vibration frequency is increased.

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Impact of post weld heat treatment on mechanical and microstructural properties of underwater friction stir spot welded 6061 aluminium alloy

Cited by 3 publications

References 25 publications

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

Microstructure and mechanical properties of probeless friction stir spot welded Al Li alloy joints via fast electric pulse treatment: A comparative study

Study on Microstructure Evolution and Mechanical Properties of Al5083 Joint Obtained from Friction Stir Spot Welding: Effect of Vibration and Plunge Depth

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