Influence of Al2Cu morphology on the incipient melting characteristics in B206 Al alloy

Prevention of incipient melting during solution heat treatment is critical for precipitation hardenable alloys such as B206, since it is deleterious to mechanical properties. For this reason, hot-stage laser scanning confocal microscopy (LSCM) was used for in-situ characterization of incipient melting of blocky Al2Cu and Al-Al2Cu eutectic during transient heating of B206 Al alloy to determine the mechanisms of melting. Microstructural analysis …