The invention discloses a preparation method of a uniform-component shrinkage-cavity-free high-entropy
alloy bar, the high-entropy
alloy bar which is uniform in component and free of shrinkage cavity defects is obtained by adopting a mode of combining intermittent feeding and an
ingot pulling process, and in addition, the invention further discloses a specific method: the high-entropy
alloy bar which is uniform in component and free of shrinkage cavity defects is obtained by adopting the mode of combining the intermittent feeding and the
ingot pulling process. And melting the
metal raw materials in batches and pulling ingots to obtain the high-entropy alloy bar with uniform components and no shrinkage cavity. According to the method, the mixture is sequentially smelted in batches, so that the uniformity of chemical components is ensured, the intangible loss of raw materials is reduced,
liquid metal feeding at a
solid-
liquid interface is ensured all the time, and the shrinkage cavity defect is avoided, so that the yield of the high-entropy alloy bar is increased; and the high-quality high-entropy alloy bar with uniform chemical components and no obvious
casting defects is obtained, the cost is greatly reduced, the raw materials are saved, the
utilization rate of the materials is improved, and the method has the characteristics of high efficiency, high yield, low loss and low
energy consumption.