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包括理论分析和试验验证的合金设计是用于发展燃气轮机叶片材料的一种新方法。本文数学模型的理论分析,包括确定合金相成分和量、γ基体稳定性、γ′相稳定性、热腐蚀抗力和密度等。在试验验证中,研究了高温机械性能,热腐蚀性能和长时显微组织稳定性。无钴镍基高温合金GH543即是从理论分析的最终的12种成分中选择出来的。数学模型计算和预测与合金试验结果基本一致。
Alloy design including theoretical analysis and experimental verification is a new method for developing gas turbine blade materials. The theoretical analysis of the mathematical model in this paper includes the determination of alloy composition and amount, γ matrix stability, γ ’phase stability, hot corrosion resistance and density. In the experimental verification, high temperature mechanical properties, hot corrosion properties and long-term microstructure stability were studied. The cobalt-free nickel-based superalloy GH543 is selected from the final 12 components of the theoretical analysis. Mathematical model calculation and prediction and the alloy test results are basically the same.