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涡轮转子是燃气涡轮发动机的核心部件。受到蜘蛛网强韧性和协同承载特性启发，提出了蛛网仿生结构(SWS)SiC/SiC陶瓷复合材料涡轮叶盘的制备方法，通过SWS预制体设计与成型，完成了SWS-SiC/SiC涡轮叶盘制备，表征了SWS-Si C/Si C涡轮叶盘性能。结果表明：所制备SWS-Si C/Si C涡轮叶盘的破裂转速达到n=118 000 r/min(叶尖线速度达到702.84 m/s)，是常规2D-Si C/Si C涡轮叶盘破裂转速的3.09倍，是某燃气涡轮发动机涡轮叶盘设计转速(n=85 000 r/min)的1.86倍；经设计转速测试后，所制备SWS-SiC/SiC涡轮叶盘的一阶、二阶、三阶频降分别是：0.41%、0.03%和0.26%。
Abstract：The turbine rotor component is one of the core components of gas turbine engine(GTE). Based on the inspiration from nature spider web as one of excellent toughness and collaborative bearing characteristics, we proposed an idea of preparing ceramic matrix composites(CMCs) turbine blisk, which has a spider web structure(SWS) preform. We invented a new method of designing SWS preform and prepared SWS-Si C/Si C turbine blisk. The SWS-SiC/SiC turbine blisk was tested via super-spin experiments in room temperature. The results show that its breaking speed reaches to 118 000 r/min(at a blade tip speed of 702.84 m/s), which is 3.09 times greater than that of the conventional 2D-C/SiC turbine disk, and 1.86 times greater than that of the target speed(85 000 r/min) of a GTE turbine blisk. The results of target speed test indicate that the first order frequency, second order frequency and third order frequency of SWS-SiC/SiC turbine blisk can be reduced by 0.41%, 0.03% and 0.26%, respectively.
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基本信息:
DOI：10.14062/j.issn.0454-5648.20211111
中图分类号:V232;V43;TB332
引用信息:
[1]刘小冲,徐友良,郭小军,等.蛛网仿生结构SiC/SiC涡轮叶盘制备与性能[J].硅酸盐学报,2022,50(08):2205-2211.DOI:10.14062/j.issn.0454-5648.20211111.
基金信息:
装备预研中国航发联合基金(KT901); 国家自然科学基金重大研究计划重点支持项目(92060202); 国家自然基金面上项目(52172100)
2022-07-01
2022-07-01
2022-07-01