The flow passage components in hydraulic machinery will be eroded rapidly when running in sand water. The wear resistance of materials commonly used in hydraulic machinery needs to be improved to prevent the failure of hydraulic machinery. New wear-resistant materials are urgently needed to improve the service life of hydraulic machinery. Eutectic high entropy alloy (EHEA) is a new kind of alloys with in situ lamellar structure. NiCoCrFeNb_0.45 EHEA has combined excellent strength and toughness. In this study, slurry erosion tests of NiCoCrFeNb_0.45 EHEA were carried out with different impact angles and impact velocities using a rotary jet erosion test apparatus. The NiCoCrFeNb_0.45 EHEA exhibited significant slurry erosion resistance compared with medium carbon steel 1045 and stainless steel 04Cr13Ni5Mo. The erosion rate of EHEA is much slower. Compared with medium carbon steel and stainless steel, the erosion of EHEA is completed via the accumulation and removal of platelets after plowing and work hardening, accompanied by partial micro-cutting.

中文翻译：

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铸造NiCoCrFeNb 0.45共晶高熵合金的优良浆液冲蚀行为

在沙子水中行驶时，液压机械中的流道部件会迅速腐蚀。需要提高液压机械常用材料的耐磨性，以防止液压机械故障。迫切需要新的耐磨材料来延长液压机械的使用寿命。共晶高熵合金（EHEA）是一种具有原位层状结构的新型合金。NiCoCrFeNb _0.45 EHEA具有出色的强度和韧性。在这项研究中，使用旋转射流腐蚀测试仪在不同的冲击角和冲击速度下进行了NiCoCrFeNb _0.45 EHEA的浆料腐蚀测试。NiCoCrFeNb _0.45与中碳钢1045和不锈钢04Cr13Ni5Mo相比，EHEA具有显着的抗泥浆侵蚀性能。EHEA的侵蚀速度要慢得多。与中碳钢和不锈钢相比，EHEA的侵蚀是通过耕种和加工硬化后血小板的积聚和去除以及部分微切割来完成的。