| 定向凝固涡轮叶片不同部位材料疲劳性能差异研究 |
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| 引用本文： | 闫晓军,邓瑛,孙瑞杰,谢建文.定向凝固涡轮叶片不同部位材料疲劳性能差异研究[J].航空学报,2011,32(10):1930-1936. |
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| 作者姓名： | 闫晓军 邓瑛 孙瑞杰 谢建文 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院,北京,100191 |
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| 基金项目： | 国家自然科学基金(10872015); 航空科学基金(2008ZB51017); 北京航空航天大学博士创新基金~~ |
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| 摘 要： | 为了研究定向凝固涡轮叶片不同部位材料疲劳性能及差异,根据典型涡轮叶片的工艺和几何特征,设计了两类叶片模拟件和用于对比研究的带缺口的对比试件,在此基础上开展了高温低循环疲劳试验和对比分析研究.试验结果表明:缘板模拟件、叶冠模拟件的材料疲劳性能分别为对比试件(和叶身中部材料性能基本相当)的5.93％和7.68％.这说明叶片...
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| 关 键 词： | 涡轮叶片 低循环疲劳 叶片模拟件 定向凝固 显微组织 |
| 收稿时间： | 2010-12-21; |
Study of Fatigue Property Variation at Different Regions on a DS Turbine Blade |
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| YAN Xiaojun,DENG Ying,SUN Ruijie,XIE Jianwen.Study of Fatigue Property Variation at Different Regions on a DS Turbine Blade[J].Acta Aeronautica et Astronautica Sinica,2011,32(10):1930-1936. |
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| Authors: | YAN Xiaojun DENG Ying SUN Ruijie XIE Jianwen |
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| Institution: | YAN Xiaojun,DENG Ying,SUN Ruijie,XIE Jianwen School of Jet Propulsion,Beihang University,Beijing 100191,China |
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| Abstract: | Due to the geometry characteristics,the microstructure of different directional solidification(DS) blade regions is different during the solidification process,which suggests that the mechanical properties may also show variation among these regions.Three types of DS specimens(platform-like,shroud-like and notched) are designed to investigate the differences through high temperature low cycle fatigue tests.Tests results show that the fatigue performances of the shroud-like specimen and the platform-like spe... |
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| Keywords: | turbine blade low cycle fatigue blade-like specimen directional solidification microstructure |
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