Microstructural evolution in the friction stir welded 6061 aluminum alloy (T6-temper condition) to copper

Ouyang, Jia‐Hu; Yarrapareddy, Eswar; Kovacevic, Radovan

doi:10.1016/j.jmatprotec.2005.09.013

Cited by 380 publications

(249 citation statements)

References 13 publications

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“…This presumption gains supports from similar results reported by OUYANG et al [25]. They reported the formation of Cu 9 Al 4 intermetallic compound in the nugget having hardness value in the range of 136-178 HV 0.2 .…”

Section: Microstructure In the Weld Nuggetsupporting

confidence: 88%

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Wahid¹,

Siddiquee²,

Khan³

et al. 2016

Archive of Mechanical Engineering

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In the present study, butt joints of aluminum (Al) 8011-H18 and pure copper (Cu) were produced by friction stir welding (FSW) and the effect of plunge depth on surface morphology, microstructure and mechanical properties were investigated. The welds were produced by varying the plunge depth in a range from 0.1 mm to 0.25 mm. The defect-free joints were obtained when the Cu plate was fixed at the advancing side. It was found that less plunging depth gives better tensile properties compare to higher plunging depth because at higher plunging depth local thinning occurs at the welded region. Good tensile properties were achieved at plunge depth of 0.2 mm and the tensile strength was found to be higher than the strength of the Al (weaker of the two base metals). Microstructure study revealed that the metal close to copper side in the Nugget Zone (NZ) possessed lamellar alternating structure. However, mixed structure of Cu and Al existed in the aluminum side of NZ. Higher microhardness values were witnessed at the joint interfaces resulting from plastic deformation and the presence of intermetallics.

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Section: Microstructure In the Weld Nuggetsupporting

confidence: 88%

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Wahid¹,

Siddiquee²,

Khan³

et al. 2016

Archive of Mechanical Engineering

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“…8) FSW joint is known to generally possess four zones such as intensively deformed zone called stir zone (SZ), thermomechanically affected zone (TMAZ), heat affected zone (HAZ), and non affected BM. 9) After succeeding in welding of similar metals, attempts have been made to join dissimilar alloys such as aluminum alloys to other dissimilar aluminum alloys, 10) copper alloys, 11) steels, 12) and magnesium alloys 13) for optimizing mechanical properties and chemical property such as corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Friction Stir Welded Dissimilar Aluminum Joints of AA2024-T3 and AA7075-T6

Khodir

Shibayanagi

2007

Mater. Trans.

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Dissimilar aluminum alloys such as 2024-T3 and 7075-T6 plates 3 mm thickness were friction stir butt welded. The welding was carried out at a constant welding speed of 100 mm/min and rotation speeds of 400, 800, 1200, 1600 and 2000 min À1 . Effects of rotation speeds and fixed location of two alloys on microstructures especially the homogeneity of elemental distribution in the stir zone (SZ), hardness distributions, and tensile properties of the joints were investigated. The homogeneity of constituents of the two alloys in the SZ was analyzed by a scanning electron microscope (SEM) equipped with an energy dispersive X-ray spectroscopy (EDS).At the lowest rotation speed of 400 min À1 there was no mixing of two alloys in the SZ and a border between them was observed regardless of the fixed location. Increase of rotation speed more than 400 min À1 brought about a mixed structure likewise onion ring with periodic change of equiaxed grain size and heterogeneous distribution of alloying elements in the SZ. At 2000 min À1 of rotation speed the SZ mainly composed of the material fixed on the advancing side. The hardness increased in the zones occupied by 2024-T3 Al alloy and fluctuations took place in the SZ due to the onion ring at the higher rotation speeds till 1600 min À1 . At 2000 min À1 of rotation speed the hardness of SZ mainly depend on the material fixed on the advancing side. Hardness minima was in the heat affected zone (HAZ) on the side of AA2024-T3 Al alloy and the values slightly increased as the rotation speed increased. In the case of transverse tensile test, defect-free joints were fractured at the HAZ on 2024-T3 side and a maximum tensile strength of the joints was achieved at 1200 min À1 of rotation speed when 2024-T3 Al alloy was located on the advancing side. On the other hand, the tensile properties of SZ in the longitudinal direction showed higher values when 7075 Al alloy was located on the advancing side.

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“…Ao contrário, se a temperatura fosse baixa a fusão parcial seria evitada e com esta a formação de compostos intermetálicos. Em trabalho derivado da SAPNC de juntas Al-Cu, Oyang [33] realizou o levantamento cuidadoso da história térmica durante a soldagem. Estas medições e os resultados da caracterização microestrutural o levaram a sugerir a fusão parcial do alumínio como mecanismo promotor da formação dos CIM.…”

Section: Efeito Dos Parâmetros De Processo Na Obtenção E Na Microestrunclassified

Efeito dos parâmetros de processo na obtenção e na microestrutura de juntas alumínio-aço realizadas mediante soldagem por atrito com pino não consumível (SAPNC)

López

Ramírez²

2013

Soldag. insp.

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Microstructural evolution in the friction stir welded 6061 aluminum alloy (T6-temper condition) to copper

Cited by 380 publications

References 13 publications

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Microstructure and Mechanical Properties of Friction Stir Welded Dissimilar Aluminum Joints of AA2024-T3 and AA7075-T6

Efeito dos parâmetros de processo na obtenção e na microestrutura de juntas alumínio-aço realizadas mediante soldagem por atrito com pino não consumível (SAPNC)

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