Interfacial microstructure and strength of steel/aluminum alloy lap joint fabricated by magnetic pressure seam welding

Lee, Kwang-Jin; Kumai, Shinji; Arai, Takashi; Aizawa, Tatsuhiko

doi:10.1016/j.msea.2007.04.033

Cited by 153 publications

(87 citation statements)

References 19 publications

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“…Barlat recommends M = 8 for the face centered cubic (FCC) materials, M = 6 for body centered (BCC) materials. AISI 1008 (JIS G 3141 SPCC) sheet steel was found to have BCC structure [9], so M = 6 was applied in this work. Mechanical properties of AISI 1008 used in this work are provided in Table 1.…”

Section: Parabolic Cupmentioning

confidence: 99%

FEA-Based Optimization of Blank Holder Force and Pressure for Hydromechanical Deep Drawing of Parabolic Cup using Greedy Search and RSM Methods

Intarakumthornchai¹,

Jirathearant²,

Thongprasert³

et al. 2010

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ABSTRACT2-D interval halving and response surface methods are presented to determine optimal process parameters of linear pressure and constant blank holder force profiles for hydromechanical deep drawing of a parabolic cup using finite element analysis. The optimization goal is to obtain the process parameters that minimize part thinning without any cracks and wrinkles. Part thinning and geometry-based wrinkle constraint functions are employed to quantify cracking and wrinkling severity. A response surface of part minimum thickness as a function of maximum internal pressure and blank holder force is constructed by using the data collected during the 2-D interval halving method. The optimum process parameters are then determined from the obtained surface. It is found that the method is capable to determine the optimal blank holder force and linear pressure profiles for hydromechanical deep drawing of the parabolic cup. KEYWORDS2-D interval halving method, response surface method, hydromechanical deep drawing, finite element analysis.

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Section: Parabolic Cupmentioning

confidence: 99%

FEA-Based Optimization of Blank Holder Force and Pressure for Hydromechanical Deep Drawing of Parabolic Cup using Greedy Search and RSM Methods

Intarakumthornchai¹,

Jirathearant²,

Thongprasert³

et al. 2010

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“…[18][19][20][21][22][23] Joining for practical materials have also been attempted, such as the joining of 6000 series aluminum alloy and SPCC where good bonding is achieved, and the details on the structure of the bonding interface have been reported. 24) However, in MPW, there are many reports on similar joining of pure metals. There have been few reports on the joining of practical materials used in industries, and the joining of 2000 series aluminum alloys have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of 2000 Series Aluminum Alloy Lap Joint Sheets by Magnetic Pulse Welding and Their Interfacial Microstructure Observations

2017

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Lap joint sheets of 2017-T3/2017-T3 and 2024-T3/2024-T3 were fabricated by magnetic pulse welding (MPW). Tensile shear tests were performed on the welded sheet, and a good lap joint was achieved at a discharge energy more than 3.0 kJ for both lap joint sheets. Weld interface showed wavy morphology when bonding at an adequate amount of discharge energy. Weld width of the lap joint sheets tend to increase with increasing of discharge energy. Collision speed calculated based on collision time was 211 m/s and estimated 1.5 GPa of the collision pressure at discharge energy of 3.5 kJ. SEM and EDS results showed that the weld interface exhibited no signi cant contrast of intermediate layer and oxides. A Metal jet was observed as aggregates of ne particles with size of less than 100 nm at the outside of bonded area. From TEM observation at the bonding interface, Al phases between yer and parent sheets had direct contact without the intervention of the oxide, and localized melting was not recognized. From these obtained results, good lap joint is attributed to true-contact of Al phases, an increasing of weld width, the anchor effect, and work hardening at weld interface.

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“…For a long time, MPW method has been used for welding tubular work-pieces [1][2][3][4] . Recently, a considerable number of papers on MPW of flat work-piece have been reported [5][6][7][8][9][10][11][12][13][14][15] . General configurations consist of a lap joint of similar or dissimilar sheet metals [5][6][7] and length scales of 10~100 cm 8) .…”

Section: Introductionmentioning

confidence: 99%

“…General configurations consist of a lap joint of similar or dissimilar sheet metals [5][6][7] and length scales of 10~100 cm 8) . The mechanism and features of MPW are considerably well known including interfacial microstructure [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interfacial Observation of Parallel Seam Welded-Aluminum Sheets by Magnetic Pulse Welding Method with Collision between Metal Jets

Aizawa

Matsuzawa

2015

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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This paper describes the parallel seam welding of aluminum sheets by a magnetic pulse welding method with a flat one-turn coil. The coil has a narrow central part and this part has two parallel upper parts. A discharge current from a capacitor bank flows along these parts. A magnetic flux having two high-density peaks is suddenly generated around these parts. The flux intersects the sheets which are overlapped on the coil. The resulting eddy currents are induced in the sheets, applying two parallel strong electromagnetic forces to them. The sheets with a gap collide with each other at high speed on two parallel places, and are welded. In this time, four metal jets occur just ahead of the collision front and four weld zones are made. Two metal jets occurring in the inside collide if the experimental conditions are suitable. The interfaces of such parallel seam welded-aluminum sheets are observed by an optical microscope. Two inside weld zones are connected to each other with a small cavity.

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Interfacial microstructure and strength of steel/aluminum alloy lap joint fabricated by magnetic pressure seam welding

Cited by 153 publications

References 19 publications

FEA-Based Optimization of Blank Holder Force and Pressure for Hydromechanical Deep Drawing of Parabolic Cup using Greedy Search and RSM Methods

FEA-Based Optimization of Blank Holder Force and Pressure for Hydromechanical Deep Drawing of Parabolic Cup using Greedy Search and RSM Methods

Fabrication of 2000 Series Aluminum Alloy Lap Joint Sheets by Magnetic Pulse Welding and Their Interfacial Microstructure Observations

Interfacial Observation of Parallel Seam Welded-Aluminum Sheets by Magnetic Pulse Welding Method with Collision between Metal Jets

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