本文试验研究了钇基稀土用于改善铸造镍基耐蚀合金性能的效果。结果表明,添加适量的稀土可以明显地细化合金的晶粒,改变碳化物的形态和分布,阻止碳化物的集聚,改变夹杂物的性质,并使其总量减少、变小、球化和弥散分布,从而使合金的耐蚀性能和力学性能得到提高,使其切削加工性能得到改善。 This paper experimentally studied the effect of yttrium-based rare earths on improving the properties of cast nickel-based corrosion resistant alloys. The results show that adding appropriate amount of rare earth can obviously refine the grain of the alloy, change the morphology and distribution of the carbide, prevent the agglomeration of the carbide, change the properties of the inclusions, reduce and reduce the total amount of the inclusions, Dispersed distribution, so that the corrosion resistance of the alloy and mechanical properties are improved, so that its cutting performance is improved.