Microstructural evolution and mechanical properties of the Al–Cu dissimilar joint enhanced by stationary-dynamic shoulder friction stir welding

You, Jiaqing; Zhao, Yunqiang; Dong, Chunlin; Miao, Shu; Liu, Zhe; Liu, Li; Su, Yunhai

doi:10.1016/j.jmatprotec.2021.117402

Cited by 44 publications

(10 citation statements)

References 28 publications

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“…Pengelasan adalah proses menyambungkan logam sejenis atau berbeda dari ukuran dan bentuk yang berbeda [4]. Proses pengelasan dapat diklasifikasikan menjadi: Resistance Welding, Thermal Welding, High Energy Beam Welding dan Electric Arc Welding [5], SMAW [6][4][9] [10]. Teknologi pengelasan sangat lah luas pengelasan bisa juga dengan pengelasan mekanik yaitu Friction Stir Welding (FSW), Friction Welding (FW) [9][11] [12] dan Friction Linier Welding (FLW) [12].…”

Section: Pendahuluanunclassified

STUDI SIFAT MEKANIS HASIL PENGELASAN DENGAN METODE LAS GESEK PADA MATERIAL BAJA TAHAN KARAT AISI D2 & AISI 304

Deni¹,

Ariyansah²,

Murtalim³

et al. 2022

JTMMX

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Teknik pengelasan telah lama digunakan untuk menyambung logam dengan adanya media panas. Busur listrik, nyala oxy-acetylene, dan gesekan digunakan sebagai sumber panas. Pengelasan gesekan adalah prosedur pengelasan keadaan padat di mana panas dihasilkan oleh dua logam yang saling bergesekan, menyebabkan logam meleleh dan kemudian membeku bersama, membentuk sambungan las. Pengelasan fusi adalah jenis sambungan las yang paling umum saat ini. Keuntungan dari pengelasan ini adalah tidak memerlukan logam pengisi, cepat, dan suhu operasi di bawah titik leleh logam. Manfaat lain dari proses pengelasan ini adalah menghemat bahan dengan tidak memerlukan logam pengisi, fluks, atau gas pelindung, serta memiliki waktu pengelasan yang singkat. Penelitian ini membahas mengenai pengelasan gesek untuk mengetahui sifat mekanis pada pengelasan gesek logam AISI D2/ AISI 304. Metode yang digunakan dengan pengujian yaitu : uji tarik dan uji kekerasan (Vickers). Pada pengujian ini didapat nilai uji tarik paling tinggi terdapat pada specimen no 9 yaitu 352Mpa denagn parameter waktu gesek 70s, tekanan tempa 2,5 Mpa dan waktu tempa 35s. dan untuk hasil Uji kekerasan dengan nilai yang tinggi terdapat pada specimen no 9 area weld yaitu 649HV dengan parameter waktu gesek 70s, tekanan tempa 2,5 Mpa dan waktu tempa 35s. Welding techniques have been used extensively in joining metal to hot media. The heat source used comes from an electric arc, an oxy-acetylene flame and friction. Friction welding is a method of solid state welding, where the heat generated by two metals rubbing together so that the metal melts and then solidifies together into a weld joint. Welding joints that are most widely used today is fusion welding. The advantages of this welding are that it does not require a charger, the welding time is fast and the operating temperature is below the melting point of the metal. Other advantages of this welding technique are material preservation because it does not require a charger, flux and gas shield, short welding time and operating temperature below the melting point of the metal. This study discusses friction welding to see the mechanical of AISI D2 / AISI 304 metal friction welding. The methods used are: , tensile test and hardness test (Vickers). In this test, the highest tensile test value was found in specimen No. 9, namely 352Mpa with the parameters of friction time of 70s, forging pressure of 2.5 Mpa and forging time of 35s. and for the results of the hardness test with a high value found in specimen No. 9 the weld area is 649HV with a friction time parameter of 70s, forging pressure of 2.5 Mpa and forging time of 35s.

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Section: Pendahuluanunclassified

STUDI SIFAT MEKANIS HASIL PENGELASAN DENGAN METODE LAS GESEK PADA MATERIAL BAJA TAHAN KARAT AISI D2 & AISI 304

Deni¹,

Ariyansah²,

Murtalim³

et al. 2022

JTMMX

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“…3 Based on the traditional tool consisting of a shoulder and a probe, many researchers have reported on various innovations, such as adding a threaded structure to the probe, 4 making the entire probe three-dimensionally complex, 5 and adding spiral grooves on the shoulder surface. 6,7 Furthermore, stationary shoulder tools 8 and bobbin tools [9][10][11] in which the shoulder and probe operate independently have also been developed. However, as tool geometries and joining processes become more complex, welding systems tend to become even more complex and larger.…”

Section: Introductionmentioning

confidence: 99%

Development of friction stir welding method using a tilted spherical tool

Mukuda,

Noguchi,

Morisada

et al. 2024

Science and Technology of Welding and Joining

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The feasibility of friction stir welding (FSW) with a simple spherical tool, which has neither a shoulder nor a probe, was studied. The spherical tool allows for localised welding with narrow weld widths and extended tool life but tends to generate flashes and weld thinning. The material flow around the spherical tool during FSW of the aluminium alloys was observed in detail, and the flash generation behaviour was discussed. As a result, a new FSW method in which a spherical tool tilted to the retreating side (RS) was developed, and by expanding the flow path of the leading surface on the RS, the flow of hot material was controlled to reduce flash and smooth the weld surface.

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“…To address these challenges, a relatively new variant of FSW, known as static shoulder friction stir welding (SSFSW), was developed [20]. This technique explicitly targets welding from low thermal conductivity Ti alloys, aiming to decrease temperature gradients across plate thickness [21].…”

Section: Introductionmentioning

confidence: 99%

The Feasibility of Static Shoulder Friction Stir Welding in Joining Dissimilar Metals of Al6061 and Ti6Al4V

Sundar,

Kar,

Mugada

et al. 2024

Metals

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In this study, static shoulder friction stir welding (SSFSW) is innovatively employed to join Al6061 and Ti6Al4V, aiming to minimize material mixing and intermetallic formation, significantly influencing the interfacial microstructure and joint strength. The results revealed that SSFSW reduced the intermetallic layer thickness at the interface, improving joint quality. The mutual interdiffusion of Al and Ti at the interface was influenced by an exothermic chemical reaction, forming an Al5Ti2–Al3Ti sequence due to the diffusion of Al into the Ti matrix. The microstructural analysis demonstrated better interfacial microstructural homogeneity in SSFSW joints than conventional FSW (CFSW), with finer titanium particle distribution. The larger particles resulted in coarser grains in CFSW, affecting the mobility of dislocations, which potentially led to the inhomogeneous concentration of dislocations at the interface. Recrystallization mechanisms varied between CFSW and SSFSW, with the Ti interface showing equiaxed and recrystallized grains due to the dynamic recovery driven by adiabatic shear bands. The tensile testing results of SSFSW exhibited a joint efficiency of 88%, demonstrating a 20.2% increase compared to CFSW, which can be attributed to differences in fracture modes. This study contributes to an understanding of dissimilar Al-Ti joining and provides insights for industries seeking to leverage the benefits of such combinations in lightweight and high-performance structures.

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Microstructural evolution and mechanical properties of the Al–Cu dissimilar joint enhanced by stationary-dynamic shoulder friction stir welding

Cited by 44 publications

References 28 publications

STUDI SIFAT MEKANIS HASIL PENGELASAN DENGAN METODE LAS GESEK PADA MATERIAL BAJA TAHAN KARAT AISI D2 & AISI 304

STUDI SIFAT MEKANIS HASIL PENGELASAN DENGAN METODE LAS GESEK PADA MATERIAL BAJA TAHAN KARAT AISI D2 & AISI 304

Development of friction stir welding method using a tilted spherical tool

The Feasibility of Static Shoulder Friction Stir Welding in Joining Dissimilar Metals of Al6061 and Ti6Al4V

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