Which three terms are used to classify deposition or surface interaction phenomena seen on metal surfaces in AMIC?

• A. Adhesion, Fusion, Peening (Correct)
• B. Fusion, Welding, Soot
• C. Peening, Casting, Cracking
• D. Adhesion, Soot, Welding

Answer: (A)

Deposition or surface interaction phenomena on metal surfaces are described by how the material relates to the surface: adhesion, fusion, and peening. Adhesion is when a deposit sticks to the metal surface without melting it. Fusion occurs when the depositing material and/or substrate melt and fuse together, creating a bonded, merged layer. Peening describes mechanical surface modification from impacts that plastically deform the surface, producing a textured or hardened layer. These three terms cover the main ways materials can interact with metal surfaces in AMIC investigations. Other terms like soot, casting, or cracking refer to different phenomena and don’t form this classification.