Friction stir welding joint of dissimilar materials between AZ31B magnesium and 6061 aluminum alloys: Microstructure studies and mechanical characterizations

Mohammadi, Javad; Behnamian, Yashar; Mostafaei, Amir; Izadi, Hossein; Saeid, T.; Kokabi, A.H.; Gerlich, A.P.

doi:10.1016/j.matchar.2015.01.008

Cited by 170 publications

(78 citation statements)

References 36 publications

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“…Bu intermetalik bileşikler, kaynaklı bölgenin mekanik özelliklerini olumsuz yönde etkilemektedir. Ayrıca, kaynak dikiş bölgesinde malzemenin dinamik olarak yeniden kristalleşmesine, kaynak bölgesinde gözenek oluşumuna ve kaynaklık alanda sertlik değerlerinin oluşmasına neden olmaktadır [9][10][11][12][13]. Dorbane [25] bir başka çalışmalarında kaynak işlemi sonrası T6 ısıl işlem uygulamasının birleştirme bölgesinde önemli oranda dayanım artışı sağladığını bildirmişlerdir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

Bilgin¹,

Karabulut²,

Özdemır³

2018

Journal of Polytechnic

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Section: Gi̇ri̇ş (Introduction)unclassified

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

Bilgin¹,

Karabulut²,

Özdemır³

2018

Journal of Polytechnic

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“…Friction stir welding (FSW) is an alternative method with lower residual stress and less distortion, which could overcome the above disadvantages, since FSW is performed below the melting temperature of the material to be welded, and it produces pore-free joints and smaller temperature gradients than conventional fusion welding [16]. There are many advantages of overcoming large differences of dissimilar material properties and it is found that FSW is an ideal method of connecting dissimilar materials.…”

Section: Introductionmentioning

confidence: 99%

The Role of Mechanical Connection during Friction Stir Keyholeless Spot Welding Joints of Dissimilar Materials

Liu

Wang

et al. 2017

Metals

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Abstract:Contrast experiments of lap joints among dissimilar AZ31B Mg alloy, Mg99.50, zinc-coated DP600 sheet, and non-zinc-coated DP600 sheet were made by friction stir keyholeless spot welding (FSKSW) and vacuum diffusion welding (VDW), respectively. Scanning electron microscopy (SEM) and energy disperse spectroscopy (EDS) were used to investigate the microstructures and components of the joints welded. The experimental results show that the FSKSW bonding method is a kind of compound mode that contains a mechanical connection and element diffusion fusion connection, in which mechanical connection has the main decisive function on joints of Mg/steel. Elements diffusion exists in the interfacial region of the joints and the elements diffusion extent is basically the same to that of VDW. The elements' diffusion in Mg/steel using FSKSW is defined in the reaction between small amounts elements of the base metal and zinc-coated metals. The intermetallic compounds and composite oxide perform some reinforcement on the mechanical connection strength.

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“…Compared with the traditional welding method, this technology produces a high joint quality, small welding distortion, small residual stress, green welding process and no pollution, and is widely used in aerospace, shipping, transportation and other fields [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution

Zhang

et al. 2017

Metals

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Abstract:The corrosion behavior of keyhole-free friction stir spot welded joints of dissimilar 6082 aluminum alloy and DP600 galvanized steel in 3.5% NaCl solution has been investigated by the immersion test and electrochemical analysis. The surface of the aluminum alloy produced exfoliation and pitting corrosion. The pitting occurred seriously on the interface of the 6082 aluminum alloy, but the steel had no corrosion. The corrosion galvanic couples were formed between elements of Si and Fe with a high electrode potential, and Mg and Al with a low electrode potential, around them. Mg and Al elements of Mg 2 Si and Si-containing solid-solution phase α (Al) preferentially became an anodic dissolution and formed exfoliation corrosion around the Si elements. Fe-rich phase θ (Al 3 Fe) as the cathode caused corrosion of Mg and formed pitting around Mg-rich phase β (Al 3 Mg 2 ) as the anode. The sequence of the corrosion resistance of different areas of the joints (with decreasing corrosion resistance) was WNZ (Weld Nugget Zone) > TMAZ (Thermo-mechanically Affected Zone) > BM (Base Metal) > HAZ (Heat-affected Zone). The joints of keyhole-free FSSW (Fiction Stir Spot Welding) of dissimilar 6082 aluminum alloy and DP600 galvanized steel have better corrosion resistance than base metal in 3.5% NaCl solution.

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Friction stir welding joint of dissimilar materials between AZ31B magnesium and 6061 aluminum alloys: Microstructure studies and mechanical characterizations

Cited by 170 publications

References 36 publications

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

AA7075-T6 ve AZ31B Alaşımlarının Sürtünme Karıştırma Kaynağı Üzerinde Ön Isıtma ve Kuru Buz Soğutmasının Etkisi

The Role of Mechanical Connection during Friction Stir Keyholeless Spot Welding Joints of Dissimilar Materials

Corrosion Behavior of Keyhole-Free Friction Stir Spot Welded Joints of Dissimilar 6082 Aluminum Alloy and DP600 Galvanized Steel in 3.5% NaCl Solution

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