Parametric review on friction stir welding for under water and dissimilar metal joining applications

Friction stir welding (FSW) is an innovative solid-state material joining method invented by The Welding Institute (TWI) in 1991 and has been one of the most significant joining technology developments in the last two decades. It has evolved into a process focused on joining arc weldable (5xxx and 6xxx) and unweldable (2xxx and 7xxx) aluminum alloys to a point where it can be implemented by the aerospace and automotive industries for their joining needs.Research towards the further extension of the process to join dissimilar metal combinations like Fe-Al and Al-Cu is currently underway. A few of the important advantages of FSW over conventional joining techniques include improved joint properties and performance, low-deformation of the workpieces, a significant reduction in production costs and the freeing of skilled labor for use in other tasks. Compared to the conventional arc-welding of aluminum alloys, FSW produces a smaller heat affected zone, and it also allows the successful joining of aluminum alloys, steel, titanium, and dissimilar alloys with a stronger joint.

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PENGARUH KECEPATAN TOOL PADA DISSIMILAR METAL ALUMINIUM 1100 DAN 5052 TERHADAP KUALITAS HASIL PENGELASAN DENGAN METODE LAS GESEK PUNTIR (FRICTION STIR WELDING)

Machine Jurnal Teknik Mesin ◽

10.33019/jm.v6i2.1184 ◽

2020 ◽

Vol 6 (2) ◽

pp. 29-35

Author(s):

Irza Sukamana

Keyword(s):

Friction Stir Welding ◽

Solid State ◽

Liquid State ◽

Fusion Welding ◽

Friction Stir ◽

Dissimilar Metal ◽

Spiral Form ◽

Metal Aluminium

Pengelasan merupakan proses penggabungan dua atau lebih logam dasar yang disatukan di permukaan kontaknya dengan atau tanpa zat penambah maupun pengisi.Pengelasan terbagi menjadi dua kategori utama yaitu Liquid-State Weldingdan Solid-State Welding. Friction Stir Weldingmerupakan salah satu contoh pengelasan Solid-State Welding (Non-Fusion Welding). Aluminium adalah logam yang paling banyak terdapat di kerak bumi, dan unsur ketiga terbanyak setelah oksigen dan silikon. Aluminium adalah suatu unsur kimia yang terletak pada golongan 13 periode 3 dengan lambang Al dengan nomor atom 13. Aluminium terbuat dari 66% bauksit dan 33% tanah liat. Aluminium merupakan salah satu material yang sering digunakan sebagai bahan baku sambungan untuk pengelasan Friction Stir Welding. Friction Stir Welding (FSW) atau Las Gesek Puntir adalah proses pengelasan gesek yang memuntir tool dengan memanfaatkan energi panas dan penekanan tanpa zat penambah maupun pengisi hingga terjadi perubahan fasa pada logam dasar. Parameter proses pengelasan yang dilakukan pada penelitian ini adalah laju translasi tool yaitu, 16 mm/menit dan 22 mm/menit dengan putaran tool 2000 rpm menggunakan jenis indentor changing spiral form. Adapun pengujian yang dilakukan yaitu, pengujian tarik, pengujian kekerasan dan pengujian komposisi kimia. Hasil dari penelitian ini adalah ditemukan bahwa laju translasi tool, perlakuan panas dan kecepatan pengelasan sangat mempengaruhi sifat – sifat mekanik aluminium seri 1xxx dan seri 5xxx yang telas dilas. Laju translasi 22 mm/menit akan meningkatkan nilai kekerasan dan kekuatan tarik yang lebih baik dibandingkan dengan laju translasi 16 mm/menit, namun tidak terlalu berdampak signifikan terhadap unsur-unsur kimiai di dalamnya.

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Friction Stir Welding of Dissimilar Metal: A Review

SSRN Electronic Journal ◽

10.2139/ssrn.3104223 ◽

2018 ◽

Author(s):

Akshansh Mishra

Keyword(s):

Friction Stir Welding ◽

Friction Stir ◽

Dissimilar Metal

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Neutron Diffraction Measurements on Dissimilar Metal Weld of Cu-Al Obtained by Friction Stir Welding Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.896.646 ◽

2014 ◽

Vol 896 ◽

pp. 646-649 ◽

Cited By ~ 1

Author(s):

Tri Hardi Priyanto ◽

Bharoto ◽

Rifai Muslih ◽

Herry Mugirahardjo

Keyword(s):

Friction Stir Welding ◽

Neutron Diffraction ◽

Weld Zone ◽

Weight Percent ◽

Al Alloy ◽

Friction Stir ◽

Dissimilar Metal ◽

Percent Composition ◽

Dissimilar Metal Weld ◽

Metal Weld

Dissimilar metal weld (DMW) of Cu and Al alloy, namely DMW CuAl, was produced using Friction Stir Welding (FSW) technique. Characterization was performed at retreating and advancing side by neutron diffraction method. It is obtained that the weight percent composition of Cu and Al are dynamically change, depend on weld zone and welding direction. In SZ Cu element 55,18%, and it is majority component in the retreating side and it decreases gradually from the retreating side to the advancing side. The weight percent composition of Cu in the retreating side at HAZ and TMAZ are 99.25 %, and 61.25%, respectively, and in the advancing side are 0.35% and 38.75 %, respectively. Cu Bragg peaks of (111), (200) and (220) show that peak width ratio of BMZ / SZ is approximately 13%. This indicates a change in crystallite size that affects the behavior of plastic deformation in the welded material.

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