In-Situ Observation of Melting and Solidification Process of CuCr Alloy by High Temperature Confocal Microscope

In this paper, the melting process of CuCr alloyCuCr alloy is observed in-situ by high temperature confocal microscopeHigh temperature confocal microscope, followed by process solidificationSolidification at a solidificationSolidification rate of 1 °C/s. It is found that the melting process of CuCr alloyCuCr alloy is mainly divided into two steps: the first step is the complete melting of Cu-rich phase matrix, and the second step is that Cr phase is gradually dissolved in molten Cu matrix. The solidificationSolidification process of CuCr alloyCuCr alloy can be divided into three stages: initial solidification stage, stable solidificationSolidification stage, and final solidification stage. The temperature range of stable solidification stage is 1400 ℃–1250 ℃, at which time the solidification rate of the alloy is the fastest, and the solidificationSolidification structure with uniform distribution of Cr-rich phase is obtained. Finally, the model of CuCr alloyCuCr alloy is firstly established by Materials studio based on heterostructureHeterostructure theory.