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在本项研究工作中设计了用于“ＨＣｌ＋ＦｅＣｌ３”复合介质的铸造镍基合金的化学成分，用金相显微镜和扫描电子显微镜观察了合金的金相组织和断口形貌，研究了不同的热处理制度及改变含铬量和稀土加入量对合金性能的影响。试验结果表明，低的含铁量和较高的镍、铬、铂的复合作用，使该合金对氧化性和还原性介质均具有良好的耐蚀性和较高的抗点蚀性能。Ｃｒ１８Ｎ１６２Ｍｏ１６合金具有满意的铸造性能，经过１２５０±１０℃的固溶处理后，使合金具有良好的耐蚀性和较高的机械性能。试验中还发现，在这种镍基耐蚀合金中添加适量的稀土，可使合金的抗拉强度提高，塑性略有下降，对合金的耐蚀性和切削加工性能有所改善。
In this research work, the chemical composition of the cast Ni-base alloy for “HCl + FeCl3” composite media was designed. The microstructure and fracture morphology of the alloy were observed by metallographic microscope and scanning electron microscope. The effects of different heat treatment systems And to change the influence of chromium content and rare earth content on the properties of the alloy. The experimental results show that the low iron content and the high nickel, chromium, platinum complex, so that the alloy oxide and reducing media have good corrosion resistance and high pitting corrosion resistance. Cr18N162Mo16 alloy with satisfactory casting properties, after 1250 ± 10 ℃ solution treatment, the alloy has good corrosion resistance and high mechanical properties. Test also found that adding a suitable amount of rare earth in this nickel-based corrosion-resistant alloy, the tensile strength of the alloy can be improved, a slight decrease in plasticity, the corrosion resistance of the alloy and the machinability improved.