Quantitative Analysis of Crack in Guide Blade of High Pressure Turbine

Wang Hua; Zhang Lingfeng; Sun Zhijun

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Quantitative Analysis of Crack in Guide Blade of High Pressure Turbine
Issue 7, Pages: 536-537(2007)
Published： 2007 ，
DOI：

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[1]王华,张凌峰,孙智军.高压涡轮导向叶片裂纹定性分析[J].特种铸造及有色合金,2007(07):536-537+490.

Wang Hua, Zhang Lingfeng, Sun Zhijun. Quantitative Analysis of Crack in Guide Blade of High Pressure Turbine. [J]. Special Casting & Nonferrous Alloys (7):536-537(2007)
[1]王华,张凌峰,孙智军.高压涡轮导向叶片裂纹定性分析[J].特种铸造及有色合金,2007(07):536-537+490. DOI：

Wang Hua, Zhang Lingfeng, Sun Zhijun. Quantitative Analysis of Crack in Guide Blade of High Pressure Turbine. [J]. Special Casting & Nonferrous Alloys (7):536-537(2007) DOI：

摘要

对国内某型飞机发动机在试车及飞行后

在高压涡轮导向叶片局部出现的裂纹进行了系统的研究和分析

通过对裂纹宏观形貌、裂纹的断口形貌和叶片金相组织状态的分析对比

对叶片裂纹性质进行了确认

该叶片气膜孔边缘裂纹为热疲劳裂纹

早期疲劳开裂与尖锐的气膜孔孔口边缘有关。

Abstract

The quantitative analysis of crack in guide blade of high pressure turbine for an engine was conducted by MEF4A image analyzer

SEM quanta 400 and EMPA.The crack characteristics in the guide blade of high pressure turbine were determined by observing macro-morphology and fracture morphology of crack as well as microstructure of the blade.The origination of crack was analyzed also.