Mechanical characterization of friction stir spot microwelds

Wang, Dung-An; Chao, Chia-Wei; Lin, P.-C.; Uan, Jun-Yen

doi:10.1016/j.jmatprotec.2010.07.005

Cited by 31 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under friction heat and stirring, SZ presented fine equiaxed grains due to recrystallisation [15,18,19,31]. Sizes of grains in SZ increased with the increase of rotation speed [31].…”

Section: Microstructure Of Fssw Jointsmentioning

confidence: 99%

Friction Stir Spot Welding: A Review on Joint Macro- and Microstructure, Property, and Process Modelling

Yang

Tian

2014

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Friction stir spot welding (FSSW) is a very useful variant of the conventional friction stir welding (FSW), which shows great potential to be a replacement of single-point joining processes like resistance spot welding and riveting. There have been many reports and some industrial applications about FSSW. Based on the open literatures, the process features and variants, macro- and microstructural characteristics, and mechanical properties of the resultant joints and numerical simulations of the FSSW process were summarized. In addition, some applications of FSSW in aerospace, aviation, and automobile industries were also reviewed. Finally, the current problems and issues that existed in FSSW were indicated.

show abstract

“…Under friction heat and stirring, SZ presented fine equiaxed grains due to recrystallisation [15,18,19,31]. Sizes of grains in SZ increased with the increase of rotation speed [31].…”

Section: Microstructure Of Fssw Jointsmentioning

confidence: 99%

Friction Stir Spot Welding: A Review on Joint Macro- and Microstructure, Property, and Process Modelling

Yang

Tian

2014

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…But weld nugget thickness decreases with increasing shoulder plunge depth (Fig 6, 7). Therefore this led to the decrease of the thickness of the upper sheet[17]. As can be seen, because of the frictional heat increases, material flow fastly in stir zone.…”

mentioning

confidence: 93%

Effect of Tool Geometry and Process Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 2024-T3 Aluminum Alloy Sheets

Murtulmuş

2016

Preprint

View full text Add to dashboard Cite

Aluminum alloy Al 2024-T3 were successfully joined using friction stir spot jwelding joining (FSSW). Satisfactory joint strengths were obtained at different welding parameters (tool rotational speed, tool plunge depth, dwell time) and tool pin profile (straight cylindrical, triangular and tapered cylindrical). Resulting joints were welded with welded zone. The different tools significantly influenced the evolution on the stir zone in the welds. Lap-shear tests were carried out to find the weld strength. Weld cross section appearance observations were also done. The macrostructure shows that the welding parameters have a determinant effect on the weld strength (x: the nugget thickness, y: the thickness of the upper sheet and SZ: stir zone). The main fracture mode was pull out fracture modes in the tensile shear test of joints. The results of tensile shear tests showed that the tensile-shear load increased with increasing rotational speed in the shoulder penetration depth of 0.2 mm. Failure joints were obrerved in the weld high shoulder penetration depth and insufficient tool rotation.

show abstract

“…Sajed [11] used two independent tools for RFSSW and applied into 2 mm thick aluminum 1100 alloys. Wang et al [19] investigated mechanical properties and microstructure of micro friction stir spot weld (µFSSW) using 300 µm sheets of AA1050. In the current work, two-stage RFSSW is used to join thin sheets of AA1100 with 0.42 mm thickness.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tools Geometry and Dwell Time on Mechanical Properties and Macrograph of Two-Stage Refilled Friction Stir Spot Micro Weld

2019

View full text Add to dashboard Cite

In this present study, the two independent tools were used in the RFSSW process to joint similar material of AA1100 with a thickness of 0.42 mm using lap joint configuration. Effect of tools geometry and dwell time on mechanical properties, and macrograph was investigated. The joints were successfully obtained with better surface appearance. The micro-hardness variation at 4 group location shows higher than the base metal, while the maximum micro-hardness was obtained at parameter TC-8 at the center of the weld. Macrograph analysis showed the important factor that brings the plug fracture in all combination of parameters. It was the upward bending hook that leads to the crack propagate along the stirred zone to the top sheet, resulted in tear-off the top sheet from the bounded region. Increasing dwell time and tools size will increase the maximum tensile shear load significantly. The best average value of maximum tensile shear load that has been achieved was 561±24 N using the parameter tool C with 8 s dwell time (TC-8).

show abstract

Mechanical characterization of friction stir spot microwelds

Cited by 31 publications

References 20 publications

Friction Stir Spot Welding: A Review on Joint Macro- and Microstructure, Property, and Process Modelling

Friction Stir Spot Welding: A Review on Joint Macro- and Microstructure, Property, and Process Modelling

Effect of Tool Geometry and Process Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 2024-T3 Aluminum Alloy Sheets

Effect of Tools Geometry and Dwell Time on Mechanical Properties and Macrograph of Two-Stage Refilled Friction Stir Spot Micro Weld

Contact Info

Product

Resources

About