Pengaruh Feed Rate dan Kecepatan Putar Pin Tool Friction Stir Welding (FSW) terhadap Kekuatan Tarik dan Kekerasan Aluminium 5052

Rahman, Muhammad Budi Nur; Nugroho, Aris Widyo; Wardhana, Bayu Satriya

doi:10.18196/jmpm.2224

Cited by 6 publications

(6 citation statements)

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“…Selain itu bisa juga karena adanya cacat wormholes yang akan menginisiasi retak pada pembebanan tarik sehingga terjadi kegagalan lasan. [6].…”

Section: Pendahuluanunclassified

“…Cacat lasan berupa incomplete fusion yaitu adanya lubang/celah pada area pengelasan tidak menyatu secara sempurna. Cacat disebabkan karena kurangnya panas oleh gesekan benda kerja tidak mampu melunakkan material sehingga material tidak tercampur secara baik [6].…”

Section: Pengamatan Struktur Makrounclassified

“…Semakin tinggi feed rate maka heat input semakin rendah. Heat input rendah mengakibatkan pendinginan yang lebih cepat sehingga butiran strukturminkro menjadi lebih kecil, hal ini yang menyebabkan kenaikan nilai kekerasan [6].…”

Section: Pengujian Kekerasanunclassified

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Pengaruh Feed Rate dan Sudut Kemiringan Tool Micro Friction Stir Welding Sambungan Aluminium 1100

Rahman,

Nugroho,

Putra

et al. 2023

JMPM

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Micro friction stir welding (μFSW) adalah pengelasan friction stir welding untuk ketebalan maksimal 1 mm. Tujuan penelitian adalah mengetahui pengaruh feed rate dan sudut kemiringan pin tool pada μFSW aluminium 1100. Pengelasan dilakukan dengan variasi sudut kemiringan tool 0°,1° dan 2°, dengan variasi feed rate 66, 85, dan 120 mm/menit serta kecepatan putaran pin tool 2280 rpm. Jenis sambungan yang digunakan adalah sambungan butt. Pengujian yang dilakukan adalah pengujian struktur mikro dan cacat makro dengan mikroskop optik, uji kekerasan, dan uji kekuatan tarik. Hasil pengamatan makro terdapat cacat lasan pada variasi feed rate yaitu cacat incomplete fussion. Hasil pengamatan struktur mikro menunjukkan bahwa grain size pada stir zone (SZ) semua variasi tampak lebih kecil dibandingkan pada BM dan HAZ menyebabkan nilai kekerasan pada HAZ dan SZ lebih tinggi dari pada BM. Semakin bertambah kecepatan feed rate dan sudut kemiringan tool maka kekerasan daerah SZ dan kekuatan tarik semakin meningkat. Heat input yang tinggi mengakibatkan pendinginan lebih lambat sehingga butiran lebih besar dan menyebabkan penurunan nilai kekerasan. Kekerasan tertinggi pada feed rate 120 mm/menit sebesar 73,7 VHN dan kemiringan tool 2o sebesar 64,7 VHN. Kekuatan tertinggi pada feed rate 120 mm/menit sebesar 84,84 MPa dan pada sudut kemiringan 2o sebesar 111,36 MPa. Micro friction stir welding (µFSW) is friction stir welding for a maximum thickness of 1 mm. The aim of the research was to determine the effect of the feed rate and the tilt angle of the pin tool on 1100 µFSW aluminum. Welding was carried out with variations in the angle of the tool tilt of 0°, 1° and 2°, with variations in the feed rate of 66, 85, and 120 mm/min and the pin rotation speed. tools 2280rpm. The type of connection used is the butt joint. The tests carried out were testing the microstructure and macro defects with an optical microscope, hardness test, and tensile strength test. The results of the macro test showed that there were defects in the feed rate variations, namely incomplete fusion defects. The results of microstructure testing showed that the grain size of the stir zone (SZ) of all variations was smaller than that of BM and HAZ causing the hardness values of HAZ and SZ to be higher than that of BM. As the speed of the feed rate and the angle of inclination of the tool increase, the hardness of the SZ region and the tensile strength increase. High heat input results in slower cooling resulting in larger grains and causes a decrease in hardness values. The highest hardness at a feed rate of 120 mm/minute is 73.7 VHN and the slope of the tool 2o is 64.7 VHN. The highest strength at a feed rate of 120 mm/min is 84.84 MPa and at an angle of 2o is 111.36 MPa.

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“…Selain itu bisa juga karena adanya cacat wormholes yang akan menginisiasi retak pada pembebanan tarik sehingga terjadi kegagalan lasan. [6].…”

Section: Pendahuluanunclassified

Section: Pengamatan Struktur Makrounclassified

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Pengaruh Feed Rate dan Sudut Kemiringan Tool Micro Friction Stir Welding Sambungan Aluminium 1100

Rahman,

Nugroho,

Putra

et al. 2023

JMPM

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“…Rata-rata kekuatan tarik sambungan FSW lebih rendah dibandingkan dengan logam induk [9], [10]. Semakin besar laju umpan pahat FSW, kekuatan tarik semakin turun walaupun regangan tarik meningkat [11]. Penumpukan bahan dasar dengan pahat mengakibatkan cacat las dan mengurangi kekuatan sambungan [12].…”

Section: Pendahuluanunclassified

Evaluasi Laju Pengelasan terhadap Mikrostruktur Sambungan Aluminium 5052 dengan menggunakan Metode Friction Stir Welding

Purwanto

2022

JMPM

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Friction stir welding (FSW) adalah salah satu jenis pengelasan yang mampu menyambung bahan paduan aluminium. Pada penelitian sebelumnya telah dilakukan penyambungan aluminium 5052 namun hasil pengujian tarik memperlihatkan penurunan kekuatan sambungan. Sehingga pada studi ini bertujuan untuk mengevaluasi secara focus mikrostuktur yang terbentuk pada sambungan plat aluminium 5052 yang telah dilakukan FSW. Plat aluminium dengan dimensi 150 x 75 mm dengan tebal 6 mm dilas dengan metode FSW, pahat pin berbentuk silinder pada kecepatan putar 1000 rpm dan laju pengelasan 20, 30 dan 40 mm/menit. Penampang hasil las diamati dengan menggunakan mikroskop optic dan Scanning Electron Microscope (SEM). Hasil pengamatan memperlihatkan adanya cacat makro dan perubahan struktur mikro pada sambungan. Cacat ini dipengaruhi desain pin yang tidak tepat sehingga daerah adukan tidak merata yang berakibat sambungan menjadi tidak sempurna.Friction stir welding (FSW) is one type of welding that is able to joining aluminium alloy. In previous studies, aluminium 5052 has been joined, but the results of the tensile test showed a decrease in the strength of the connection. Therefore, in this study the aim is to focus on evaluating the microstructure formed at the 5052 aluminium plate welding join that has been carried out by FSW. Aluminium plates with dimensions of 150 x 75 mm with a thickness of 6 mm were welded by the FSW method, cylindrical pin chisel at a rotational speed of 1000 rpm and welding rates of 20, 30 and 40 mm/minute. The cross section of the weld was observed using an optical microscope and Scanning Electron Microscope (SEM). The results of the observations showed that there were macro defects and changes in the microstructure of the joints. This defect is influenced by the improper design of the pin so that the area of the mixture is uneven which results in an imperfect connection

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“…These two parameters indicate that the tool pin rotation and feed rate play an important role in the FSW welding process. [9] A research conducted to investigate the effect of different feed rates on the tensile and impact strength of aluminium 6061 using the friction stir welding (FSW) welding method using feed rate of 30 mm/minute, 50 mm/minute, 100 mm/minute, and 200 mm/minute. The value of the impact strength test on FSW materials decreased compared to the base metal.…”

Section: Introductionmentioning

confidence: 99%

Analysis of FSW and TIG Aluminium 5052 Welded Joint Strength Due to The Effect of Working Temperature

Yudo¹,

Baihaqi

Budiarto³

2022

IJMEIR

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⎯ aluminium 5052 on ships can be used in LNG tanks, heat exchangers, bulkheads, and superstructures. Its characteristics that can be used in various types of construction in ships cause aluminium 5052 to meet various temperature conditions. The purpose of this research is to find out the strength of the FSW and TIG aluminium 5052 welded joints due to the effect of working temperature. The methods used are impact test and bending test of aluminium 5052 specimens immersed in liquid nitrogen at -160 0 C and heated in oven at 166 0 C. The average impact value of raw materials, FSW specimens, and TIG specimens immersed in liquid nitrogen at -160 0 C are 1.22 J/mm 2 , 0.2195 J/mm 2 , and 0.0663 J/mm 2 , respectively. The average impact value of raw materials, FSW specimens, and TIG specimens heated in an oven at 166 0 C are 1.3403 J/mm 2 , 0.1395 J/mm 2 , and 0.0870 J/mm 2 , respectively. The average bending stress of raw materials, FSW specimens, and TIG specimens immersed in liquid nitrogen at -160 0 C are 394.70 MPa, 85.82 MPa, and 299.49 MPa, respectively. The average bending stress of raw materials, FSW specimens, and TIG specimens heated in an oven at 166 0 C are 400.45 MPa, 148.58 MPa, and 318.55 MPa, respectively. Weld discontinuity observations shows that all raw material specimens do not have open discontinuities exceeding 3 mm, all FSW specimens have open discontinuities exceeding 3 mm, and TIG specimens shows varied results. The conclusion of this study shows that aluminium 5052 is a material that is resistant to temperature changes and is able to maintain its strength at various temperature conditions because aluminium is an FCC (Face Centered Cubic) material.

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Pengaruh Feed Rate dan Kecepatan Putar Pin Tool Friction Stir Welding (FSW) terhadap Kekuatan Tarik dan Kekerasan Aluminium 5052

Cited by 6 publications

References 0 publications

Pengaruh Feed Rate dan Sudut Kemiringan Tool Micro Friction Stir Welding Sambungan Aluminium 1100

Pengaruh Feed Rate dan Sudut Kemiringan Tool Micro Friction Stir Welding Sambungan Aluminium 1100

Evaluasi Laju Pengelasan terhadap Mikrostruktur Sambungan Aluminium 5052 dengan menggunakan Metode Friction Stir Welding

Analysis of FSW and TIG Aluminium 5052 Welded Joint Strength Due to The Effect of Working Temperature

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