Co-rolling is best described as which bonding method for joining clad materials?

Co-rolling is best described as which bonding method for joining clad materials?

• A. The most common bonding process for joining clad materials
• B. A welding process using nickel filler
• C. A brazing process
• D. A diffusion bonding process

Answer: (A)

Co-rolling, also known as roll bonding, bonds clad materials by passing metal sheets through rollers under high pressure so the surfaces press into intimate contact. This solid-state process causes plastic deformation at the interface and promotes diffusion across it, forming a strong metallurgical bond without melting. Because it can efficiently produce large, continuous clad sheets and reliably join dissimilar metals, it’s the most common method used to create clad materials. It isn’t a welding process that relies on melting, nor a brazing process that uses a filler metal, and while diffusion can occur, roll bonding is defined by the rolling—not by the diffusion bonding procedure used on its own.

Co-rolling, also known as roll bonding, bonds clad materials by passing metal sheets through rollers under high pressure so the surfaces press into intimate contact. This solid-state process causes plastic deformation at the interface and promotes diffusion across it, forming a strong metallurgical bond without melting. Because it can efficiently produce large, continuous clad sheets and reliably join dissimilar metals, it’s the most common method used to create clad materials. It isn’t a welding process that relies on melting, nor a brazing process that uses a filler metal, and while diffusion can occur, roll bonding is defined by the rolling—not by the diffusion bonding procedure used on its own.