Theory and experiments on rapid melting of metals including alloy effects

摘要

A theory relating to the response of materials heated rapidly into the melt regime is developed. The theory incorporates features that distinguish pure materials from nonpure materials such as metal alloys. This distinction is based on the observed difference between the liquidus and the solidus temperature at a given pressure. This difference leads to significant terms in the resulting theory that are unique to nonpure materials. Experiments are described that give a direct means of evaluating the theory. Results are given for two aluminum alloys, 1100 and 2024. Limited experimental evidence suggests that significant nonequilibrium effects may distinguish the response of alloys from that of pure materials.