Effect of Threaded Pin Tool for Friction Stir Welding of AA6061-T6 at Varying Traverse Speeds: Torque and Force Analysis

Banik, Abhijit; Barma, John Deb; Saha, Sushanta

doi:10.1007/s40997-019-00289-w

Cited by 34 publications

(18 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is seen from Figure 16 that the fracture location of tensile specimens of FSW joints at the travel speeds of 50, 100, 150, and 200 mm/min are about 27.2, 23.6, 22.2, and 19.1 mm away from the weld centerline, respectively, which is well consistent with the hardness minima positions of the hardness plots shown in Figure 15. This is similar to the results on some FSW joints of some Al alloys, such as 2219 aluminum alloy [31], 6061-T6 aluminum alloy [51], and 7075-T6 aluminum alloy [24], but different from that on Al-Zn-Mg alloy by Zhang et al [30], who found failure at or around the zigzag line. There are few strengthening precipitates at hardness minima position in HAZ ( Figure 14) and this zone has a low resistance to dislocation movement and therefore becomes the weakest zone of the FSW joint.…”

supporting

confidence: 89%

Effect of Travel Speed on Microstructure and Mechanical Properties of FSW Joints for Al–Zn–Mg Alloy

et al. 2019

View full text Add to dashboard Cite

The microstructures and mechanical properties of friction stir welded (FSW) Al–Zn–Mg alloy plate under different travel speeds were investigated. Both the average grain sizes (AGSs) of the shoulder affected zone (SAZ), nugget zone (NZ), and the widths of thermo-mechanically affected zone (TMAZ) decreased with the increase of travel speed. Moreover, the AGSs of NZ are always about 60% of that of SAZ at different travel speeds. The fractions of high-angle grain boundaries (HAGBs) in the FSW joints reduce with the distance away from the stir zone (SZ). Furthermore, the initial η’ strengthening precipitates in NZ and TMAZ dissolve and GP zones form during subsequent natural aging, so that the hardness is similar in the two zones. The precipitate evolution in the heat-affected zone (HAZ) at hardness minima are affected by travel speeds, which induce the hardness minima and ultimate tensile strength (UTS) of FSW joints and increase with the increase of travel speed, and a fracture tends to occur at hardness minima location of HAZ during tensile testing.

show abstract

supporting

confidence: 89%

Effect of Travel Speed on Microstructure and Mechanical Properties of FSW Joints for Al–Zn–Mg Alloy

et al. 2019

View full text Add to dashboard Cite

show abstract

“…It can be observed from the figure that with an increase in the TTS from 1 to 3 mm/s, the average value of X force and Z force increases. This observation is in agreement with the study made by Banik et al [28]. However, in the case of Z force, it can be observed that the values do not increase with further increase in TTS from 3 to 4 mm/s.…”

Section: Torque and Force Analysissupporting

confidence: 93%

Effect of traverse speed on microstructure and mechanical properties of friction-stir-welded third-generation Al–Li alloy

Kumar

Acharya

Sethi

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

The aim of the study is to investigate the consequences of tool traverse speed on force and torque distribution of friction-stirwelded third-generation Al-Cu-Li alloy joints. The microstructure and corresponding mechanical properties of the joints are investigated on force and torque perspective. Thus, the contribution of the present work lies in establishing the relation between traverse speed and mechanical properties of the AA2050-T84 joint. Four welds have been considered at varying traverse speeds from 1 to 4 mm/s at constant tool rotational speed and tool tilt angle of 1400 rpm and 2°, respectively. A tool of H13 steel having a tapered screw-threaded pin profile was used. The investigation reveals that with the increase in traverse speed, longitudinal force (X-force), vertically downward force (Z-force) and spindle torque also increase. The grain size of the nugget zone reduces from 19.84 to 14.86 µm as traverse speed increases. It has been found that the mechanical strength of the joint increases as the traverse speed increases. The Vickers microhardness value increases from 115 HV 0.1 to 131 HV 0.1 in the nugget zone as traverse speed increases from 1 to 4 mm/s. The maximum tensile strength, % elongation and joint efficiency are 403.2 MPa, 7.2% and 75.5% for traverse speed of 4 mm/s. The tensile fracture samples are analyzed by scanning electron microscope and reveal ductile mode of fracture.

show abstract

“…Also, the variation of peak temperature lies between the AS and RS of the welding. This variation of peak temperature in AS and RS of the welding with SSB joint configuration is also reported by different authors in their research work [14,15]. The higher peak temperature in RS compared to AS in DBL1 configuration may be due to the extruded material of RS plate in shoulder influenced region beyond the weld centreline.…”

Section: Study Of Time-temperature Plotssupporting

confidence: 83%

“…The mechanical properties of the welded joints are highly affected by the microstructure developed and thus the microstructure of the materials needs to be analyzed in order to determine the performance of the welded joints under required conditions. The microstructure developed depends on the generation of heat and the material flow [14] which is greatly affected by the placement of the plates as discussed in the earlier section. Figure 6 represents the different zones viz.…”

Section: Microstructural Analysismentioning

confidence: 99%

A Study on the Implication of Modified Joint Configuration in Friction Stir Welding

et al. 2021

Self Cite

View full text Add to dashboard Cite

The current investigation is a preliminary approach proposing the feasibility of a modified joint configuration namely double-butt-lap (DBL) in the field of friction stir welding (FSW). The main scope of adopting this kind of joint configuration is to essentially eliminate the irregularities in material flow and defects (root gap, kissing bond) that are observed while joining by using the commonly followed simple square butt joint configuration (SSB) technique. Two different geometries of the joint configuration are fabricated on 6 mm thick AA6061-T6 plates. FSW is carried out at a parametric combination of 1100 rpm, 75 mm/min and 1.5° tilt angle. The comparison of the macrographs of DBL with SSB reveals a quite distinct cross-sectional macrostructure of DBL from SSB in terms of material flow in the nugget zone (NZ). Sharp material flow lines without any macro defects are observed in the case of DBL 2. Mechanical test analysis reveals remarkable enhancement in the mechanical properties of some joint configuration of DBL over SSB. The current research work may act as a foundation for future research work in the utility of such configurations in the diverse field of FSW.

show abstract

Effect of Threaded Pin Tool for Friction Stir Welding of AA6061-T6 at Varying Traverse Speeds: Torque and Force Analysis

Cited by 34 publications

References 29 publications

Effect of Travel Speed on Microstructure and Mechanical Properties of FSW Joints for Al–Zn–Mg Alloy

Effect of Travel Speed on Microstructure and Mechanical Properties of FSW Joints for Al–Zn–Mg Alloy

Effect of traverse speed on microstructure and mechanical properties of friction-stir-welded third-generation Al–Li alloy

A Study on the Implication of Modified Joint Configuration in Friction Stir Welding

Contact Info

Product

Resources

About