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

Baskoro, Ario Sunar; Amat, Mohammad Azwar; Widiyanto, Muhammad Andre

doi:10.1051/matecconf/201926902002

Cited by 3 publications

(7 citation statements)

References 20 publications

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“…A low plunge depth will cause the diameter of the shoulder pin not to rub completely against the material so that the diameter of the weld shoulder will be smaller and vice versa. Dwell time and tool geometry have an effect on weld geometry in µFSSW [24]. The weld geometry will be bigger if the dwell time is increased, as well as changing the tool geometry can also increase the weld geometry.…”

Section: Results Of Weld Geometrymentioning

confidence: 99%

“…Then the longer the friction between the tool and the specimen will affect the heat and the weld joint's quality [23]. Dwell time does affect the increase in tensile strength [24].…”

Section: Results Of Weld Geometrymentioning

confidence: 99%

“…Area measurements were carried out on the backside of the plate to see how large the TMAZ area was formed due to changes in dwell time and plunge depth. The deeper the tool is used, the larger the TMAZ area at the back of the plate [24].…”

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

“…In this case, the friction between the tool and the specimen has a longer effect on heating and thus on the quality of the weld joint [22]. Dwell time affects the increase in tensile strength [24]. In another study using pipe material with the FSW method [28], adding friction time to a certain value can increase its tensile strength.…”

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

“…Therefore, it can be discussed in detail about the ultrastructure of each existing tool to find out why this phenomenon occurs. For embedded tools based on the journal [26] and the researcher assumed that there was a maximum weld seam strength [24]. A schematic of the formation of the hook and extrude zone on the plate can be seen in Fig.…”

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

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Indentifying the effect of micro friction stir spot welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100

Membala

Sutresman

Arsyad

et al. 2022

EEJET

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Micro-friction stir spot welding (µFSSW) is one type of welding that is suitable for joining lightweight materials. One of the challenges in joining lightweight materials with µFSSW is that the material is easily perforated, or the join is not strong enough, so it is necessary to select the right µFSSW parameters. In this article discusses about investigates the micro-Friction Stir Spot Welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100. The material thickness of the AZ31B and AA100 is 0.5 mm and 0.32 mm, respectively. The µFSSW tool is made of high-speed steel (HSS) with a pin diameter of 0.25 mm and a shoulder diameter of 0.5 mm. The constant process parameters of the µFSSW joint used, i. e., plunge depth, dwell time plunge rate, and high tool rotational speed of 33,000 rpm. Welding test results include weld geometry, mechanical properties, and metallography. Weld geometry testing to determine the weld nugget diameter. The mechanical properties test was shear tensile test and cross tensile test, while the metallographic test included macrostructure and microstructure observations. The results of the FSSW weld geometry show that at a dwell time of 700 milliseconds and a plunge depth of 600 microns, the weld pin diameter and weld shoulder diameter are close to the pin diameter and the diameter of the shoulder tool used. Dwell time and plunge depth has a significant effect on tensile strength. The maximum shear and cross loads achieved were 387±17 N and 29±2 N, respectively. Intermetallic compounds (IMC) are observed at the interface of the two materials, while a dwell time of 700 milliseconds give the effect of cracks on the inside of the weld

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Section: Results Of Weld Geometrymentioning

confidence: 99%

“…Then the longer the friction between the tool and the specimen will affect the heat and the weld joint's quality [23]. Dwell time does affect the increase in tensile strength [24].…”

Section: Results Of Weld Geometrymentioning

confidence: 99%

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

Section: Discussion Of the Experimental Results Of The Variation Para...mentioning

confidence: 99%

See 3 more Smart Citations

Indentifying the effect of micro friction stir spot welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100

Membala

Sutresman

Arsyad

et al. 2022

EEJET

View full text Add to dashboard Cite

show abstract

Effect of Tool Profile on Mechanical Properties, Temperature, and RPM Using Micro Friction Stir Spot Welding (mFSSW) on Aluminum Alloy AA1100

Safitri,

Fakhrurrozi,

Amat

et al. 2024

J. Phys.: Conf. Ser.

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Micro friction stir spot welding (mFSSW) is a type of solid-state spot welding of nonconsumable tools using friction and force to join material of thickness less than 1 mm. This research aimed to investigate the shape of the tools for best welding results among the proposed tool’s profile. The material specimen was aluminum alloy AA1100, with a thickness of 0.42 mm. This study aims to measure the temperature and RPM of the welding process with thermocouples and tachometers. And then investigate the mechanical properties using the tensile shear test, microhardness, and macrostructural observation to find the welding zone and hook profile. Four tools’ profiles are named tool 1, tool 2, tool 3, and tool 4. The result of this study was that tool 3 (Shoulder 450μm) had the highest temperature, around 428˚ C, and the shear tensile test was 450 N (the highest). The macrostructural observation used to define the zone on the welding result there are stir zone (SZ), thermos-mechanically affected zone (TMAZ), and heat affected zone (HAZ).

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Identification of the influence of micro two-stage refilled friction stir spot welding with variation dwell time on dissimilar brass CuZn30-aluminum AA1100

Rupajati,

Baskoro,

Pramudito

et al. 2023

EEJET

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Welding and joining of brass CuZn30-aluminum AA1100 were obtained using micro two-stage refilled friction stir spot welding (mTS-RFSSW), which was carried out to eliminate the holes formed by the micro friction stir spot welding (mFSSW) process. The mTS-RFSSW process begins with the mFSSW welding process using tools with a pin inner diameter of 2.69 mm, pin outer diameter 1.811 mm and shoulder diameter of 4.954 mm, followed by a second stage process called mTS-RFSSW, which is a hole closing process using a tool with a pinless tool with shoulder diameter 4.954 mm. This study aimed to determine the effect of the second stage of dwell time on the mechanical properties produced in the mTS-RFSSW welding technique using brass CuZn30 and aluminum AA1100 with a thickness of 0.42 mm. In this study, the variable parameter is the second stage dwell time which varies from 3 s, 4 s, 5 s, and 6 s, respectively. An optical microscope that aims to observe the macrostructure shows that an upward hook is formed in each joining process. Based on the scanning electron micrograph, the resulting formation of different intermetallic compounds (IMC) with varying thicknesses occurs in every variation of dwell time. The high dwell time indicates discontinued IMC, which affects the tensile force. The IMC formed at the interface of brass CuZn30 and aluminum AA1100 is dominated by more than 30 % Cu. The highest hardness value is found in the stir zone because the formation of intermetallic compounds influences refined grains. The highest maximum shear force and cross tensile force was obtained 371.35 N and 54.88 N, respectively, in the dwell time of 3 s. The result of fracture properties after the lap shear test shows the presence of small dimples with microcracks that indicate brittle failure

show abstract

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

Cited by 3 publications

References 20 publications

Indentifying the effect of micro friction stir spot welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100

Indentifying the effect of micro friction stir spot welding (µFSSW) parameters on weld geometry, mechanical properties, and metallography on dissimilar materials of AZ31B and AA1100

Effect of Tool Profile on Mechanical Properties, Temperature, and RPM Using Micro Friction Stir Spot Welding (mFSSW) on Aluminum Alloy AA1100

Identification of the influence of micro two-stage refilled friction stir spot welding with variation dwell time on dissimilar brass CuZn30-aluminum AA1100

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