Study on the Welding Process and Application of Al/Cu Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.800.290 ◽

2013 ◽

Vol 800 ◽

pp. 290-293

Author(s):

Hong Yang ◽

Nian Suo Xie ◽

Qiang Liu

Keyword(s):

Friction Welding ◽

Explosive Welding ◽

Welding Process ◽

Dissimilar Material ◽

Pressure Welding ◽

Welding Technology ◽

Cold Pressure

The characteristics of welding process for aluminum-copper dissimilar material such as friction welding, explosive welding, brazing and cold pressure welding are discussed firstly in this paper. Then the welding technology and its application for aluminum-copper dissimilar material are summarized. Finally, the outlook is analyzed for the welding process of aluminum-copper dissimilar material.

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The Interfacial Characterization and Performance of Cu/Al-Conductive Heads Processed by Explosion Welding, Cold Pressure Welding, and Solid-Liquid Casting

Metals ◽

10.3390/met9020237 ◽

2019 ◽

Vol 9 (2) ◽

pp. 237 ◽

Cited By ~ 3

Author(s):

Yanni Wei ◽

Hui Li ◽

Fu Sun ◽

Juntao Zou

Keyword(s):

Corrosion Resistance ◽

Bonding Strength ◽

Explosive Welding ◽

Slag Inclusion ◽

Explosion Welding ◽

Bonding Interface ◽

Pressure Welding ◽

And Performance ◽

Solid Liquid ◽

Cold Pressure

The Cu/Al composites conductive head is widely used in hydrometallurgy as the core component of cathode plate. Its conductive properties directly affect the power consumption, and the bonding strength and corrosion resistance determine the conductive head service life. The Cu/Al conductive head prepared by explosion welding, cold pressure welding, and solid-liquid casting methods were investigated in this paper. The interface microstructure and compositions were examined by scanning electron microscope and X-ray energy dispersive spectrometry. The bonding strength, interface conductivity, and the corrosion resistance of three types of joints were characterized. The Cu/Al bonding interface produced by explosive welding presented a wavy-like morphology with typical defects and many of brittle compounds. A micro-interlocking effect was caused by the sawtooth structures on the cold pressure welding interface, and there was no typical metallurgical reaction on the interface. The Cu/Al bonding interface prepared by solid-liquid casting consisted mainly of an Al-Cu eutectic microstructure (Al2Cu+Al) and partial white slag inclusion. The thickness of the interface transition layer was about 200–250 µm, with defects such as holes, cracks, and unwelded areas. The conductivity, interfacial bonding strength, and corrosion resistance of the conductive head prepared by explosive welding were superior to the other two.

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Joining with Electrochemical Support: Cold Pressure Welding of Copper – Weld Formation and Characterization

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.966-967.453 ◽

2014 ◽

Vol 966-967 ◽

pp. 453-460 ◽

Cited By ~ 1

Author(s):

Hans Christian Schmidt ◽

Dmytro Rodman ◽

Olexandr Grydin ◽

Christoph Ebbert ◽

Werner Homberg ◽

...

Keyword(s):

Surface Condition ◽

Pure Copper ◽

Welding Process ◽

Surface Preparation ◽

Process Technology ◽

Pressure Welding ◽

Preparation Methods ◽

Welding Interface ◽

Electrochemical Surface Treatment ◽

Cold Pressure

Cold pressure welding is a versatile process that can be used to weld most metals. It is, however, difficult to achieve a weld at room temperature through the application of pressure. As in every welding process, several different parameters have to be considered: the metals to be welded and their properties in terms of surface condition, cleanliness, strength of the metal, and so on. The surface condition and surface preparation methods are the most important parameters, since the cold weld is based solely on the contact between the two metal surfaces that are involved. Joining with electrochemical support (ECUF) is a new approach that overcomes most of the current process barriers and limitations through optimized electrochemical surface treatment and an improved process technology based on a pilger roll. This paper provides an overview of the ECUF process and current research results on the pressure welding of pure copper (CW004A). The formation of the weld has been investigated and the welding interface characterized in respect of its microstructure.

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Friction welding of Aluminium Alloy 6063 with copper

E3S Web of Conferences ◽

10.1051/e3sconf/202017002004 ◽

2020 ◽

Vol 170 ◽

pp. 02004

Author(s):

Yashwant Chapke ◽

Dinesh Kamble ◽

Saoud Md. Salim Shaikh

Keyword(s):

Aluminum Alloy ◽

Process Parameters ◽

Weld Joint ◽

Friction Welding ◽

Joint Strength ◽

Welded Joint ◽

Welding Process ◽

Dissimilar Material ◽

Work Piece ◽

Electrical Conductors

Friction welding process is a forging welding process in which work piece are joined due to heat produced by friction between two joining surfaces and upset pressure is applied by non-rotating work piece. Joining of aluminum alloy with dissimilar material is important research area to focus on as maximum aircraft structures havexx Aluminum alloy frame and aerospace designers familiar with Aluminum alloy and its design considerations. After comparison of mechanical properties and application of light weight alloys aluminum alloys, tungsten, stainless steel and copper, copper selected as dissimilar material to join with Aluminum alloy AA6063. AA 6063 also known as architectural alloy selected based upon its properties. This dissimilar joint of AA6063 and Copper has application in electrical conductors as copper is good electrical conductivity and used in maximum electrical conductors. In this research work AA6063 joined with Copper successfully using Rotary Friction Welding process. Through process study effective process parameters like Friction Pressure, Upset Pressure, Spindle Speed, and Friction Time identified and their effect on weld joint strength were studied.Testing for measuring UTS of friction welded joint conducted. Using DOE tool optimized set process parameters for friction welding identified and their effect on weld joint strength studied experimentally. Maximum UTS of 222.787 MPa for Friction welded joint achieved, bend test also performed on friction welded samples.

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Properties of Cold Pressure Welded Aluminium and Copper Sheets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.463-464.244 ◽

2012 ◽

Vol 463-464 ◽

pp. 244-248 ◽

Cited By ~ 1

Author(s):

Mumin Sahin ◽

Cenk Misirli

Keyword(s):

Intermetallic Layer ◽

Cold Deformation ◽

Welding Process ◽

Industrial Process ◽

Hydraulic Press ◽

Pressure Welding ◽

Aluminum Sheets ◽

Cold Pressure ◽

Local Hardening ◽

Welding Technique

Cold pressure welding has been used as an industrial process with an increasing rate for several years. In this study, cold pressure welding has been applied to aluminum and copper alloy sheets having commercial purity. Hydraulic press having 150 metric-ton capacities has been used for welding process. As the surface roughness and the weld deformation ratios of aluminum sheets increased, tensile strength of the joints also increased. Purchased specimens with original roughness had the lowest weld deformation as-is and it was not possible to join these sheets at 30% weld deformations. Hardness increases due to local hardening at the interface as a result of cold deformation. Results showed that the cold pressure welding technique in lap form resulted in strong Al-Al joints and the intermetallic layer formed in Al-Cu joints did not affect the joint strength to a great extent.

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Structural and Fatigue Properties of Titanium-Steel Bimetallic Composite Obtained by Explosive Welding Technology

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.592-593.594 ◽

2013 ◽

Vol 592-593 ◽

pp. 594-597 ◽

Cited By ~ 7

Author(s):

Aleksander Karolczuk ◽

Mateusz Kowalski

Keyword(s):

Fatigue Life ◽

Mechanical Testing ◽

Explosive Welding ◽

Welding Process ◽

Fatigue Tests ◽

Fatigue Properties ◽

Bimetallic Composite ◽

Welding Technology ◽

Fatigue Characteristics ◽

Titanium Grade

Structure of bimetallic composite obtained during explosive welding process exhibits strong heterogeneity in the vicinity of interface. The interface usually has a wavy shape with characteristic increase of hardness and largely deformed grains. Recently obtained fatigue tests for titanium-steel bimetal specimens under fully reversed push-pull loading show ratcheting phenomenon. In order to investigate this phenomenon mechanical testing and structural observations of titanium-steel bimetal and titanium before cladding have been performed. Fatigue characteristics in the form of relation between strain amplitude and fatigue life for titanium (Grade 1), steel (S355J2+N) and bimetal will be presented.

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