Clad Metals: Fabrication, Properties, and Applications

Studying clad metals has been an active field of research in the last few decades [...]

Production of Clad Metals Using the Melts-Kiss Method

The melts-kiss method is proposed for producing clad metals made of aluminum alloys via casting. In this method, a molten metal is solidified by another molten metal. AA1050 and A383 alloys were used in experiments. The interface between the two aluminum alloys was clear. The width of the diffusion area of Si was very narrow. The two aluminum alloys were strongly bonded. The melts-kiss method can be adapted for semi-continuous casters to cast clad plates.

Mechanical Performance and Ductility of Cu/Al/Cu Clad Metals

The tensile mechanical performance and ductility of Cu/Al/Cu clad composite were studied. Brittle interfacial reaction compounds were observed at Cu/Al interfaces after annealing at 500°C. The ultimate tensile strength of the tri-layered Cu/Al/Cu clad plates is in close agreement with those calculated from the UTS data of separated Cu and Al layers using the rule of mixture. The loss of ductility in Cu/Al/Cu and separate Cu upon annealing at 500°C is associated with the brittle intermetallic layer. The greater ductility of as-roll-bonded Cu/Al/Cu than those of both Cu and Al is linked to the excellent interface bonding after roll-bonding. Excellent bonding at Cu/Al interface is prerequisites for improvement ductility of clad composite.

Microstructure and Residual Stress Analysis of Dissimilar Metal Composite Plates Produced by Explosion Welding

In the present work, different corrosion resistant materials (AL-6XN superaustenitic stainless steel, ZERON 100 superduplex stainless steel and Inconel 625 Ni alloy) were joined with ASME SA516-70 carbon steel by explosion welding to form bimetal composite plates. The microstructure of cladded plates was characterized by optical and scanning electron microscopy and the hardness variation across the interface was determined by applying Vickers microhardness. The residual stresses generated by the cladding process were determined by X-ray diffraction. All materials adhered well to the ASME SA516-70 base plate and the cladded interface exhibited the wavy morphology usually associated with strong bond strengths. Hardness increased near the interface due to strain hardening caused by plastic deformation and tensile residual stresses were found to develop on all clad metals.

Study on Spring-Back of CU11000 Clad AL1050 Sheets

This study is aimed to investigate the spring-back angle of clad metal sheet in bending process by using finite element simulation and experiment to meet the growing requires in the application of clad metals. In this study, the clad metals processed into 1mm thick from CU11000 and AL1050 were bent 90o over a die with a bend radius of 1mm. The results show that there is not any relative sliding, crushing or peeling occurred in the junction of the clad material during the bending process, the spring-back angle of the clad metal is always smaller than each single metal and the CU content increasing also caused spring-back angle become small. The configuration of a harder material (CU11000) in tensile side also has a smaller spring-back angle.