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发明公开
CN107630152A 一种含钇和铪的镍基等轴晶合金及其热处理工艺和应用 无效 - 驳回

一种含钇和铪的镍基等轴晶合金及其热处理工艺和应用
摘要：
本发明公开了一种含钇和铪的镍基等轴晶合金及其热处理工艺和应用，属于镍基等轴晶合金技术领域。合金成分为：C 0.03～0.15％，Cr 8.0～10.0％，Al 5.5～6.2％，Co 3～8％，W 6.0～9.0％，Mo 2.5～3.5％，Nb 1.8～2.4％，B 0.001～0.04％，Hf1.0～2.0％，Y 0.005～0.05％，Ni余量。该合金在1100℃和55MPa持久寿命≥50小时，可直接铸造使用。该合金可用于制备1100℃长期工作的航空发动机和燃气轮机涡轮叶片等热端部件。采用该耐热合金制作发电用燃气轮机涡轮叶片，可显著提高燃气涡轮机工作温度和效率，进而大幅提高发电效率。
摘要（英）：

The invention discloses a nickel-based equiaxed crystal alloy containing yttrium and hafnium, a heat treatment process and applications thereof, and belongs to the technical field of nickel-based equiaxed crystal alloys, wherein the components comprise 0.03-0.15% of C, 8.0-10.0% of Cr, 5.5-6.2% of Al, 3-8% of Co, 6.0-9.0% of W, 2.5-3.5% of Mo, 1.8-2.4% of Nb, 0.001-0.04% of B, 1.0-2.0% of Hf, 0.005-0.05% of Y, and the balance of Ni. According to the present invention, the lasting life of the alloy at the temperature of 1100 DEG C under the pressure of 55 MPa is more than or equal to 50 h, andthe alloy can be used directly casted, and can be used for preparing aero-engine and gas turbine turbo blades working for a long time at the temperature of 1100 DEG C and other hot-end components; andwith the application of the heat-resistant alloy to produce the gas turbine turbo blades for power generation, the working temperature and the working efficiency of the gas turbine can be significantly improved so as to substantially improve the power generation efficiency.

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