Rupture Analysis on Closure with Embedded Blade Casting of Gas Turbine

Du Xiaoming  Dong Xiuqi  Zhu Lijuan

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Rupture Analysis on Closure with Embedded Blade Casting of Gas Turbine
Issue 4, Pages: 23-25(2002)
Published： 2002 ，
DOI：

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[1]杜晓明,,,,,,,,,,董秀琦,,,,,,,,,,朱丽娟,,,,,,,,,,施庭芳,,,,,,,,,,董红潮.气轮机隔板埋铸叶片断裂分析[J].特种铸造及有色合金,2002(04):23-25+2.

Du Xiaoming Dong Xiuqi Zhu Lijuan. Rupture Analysis on Closure with Embedded Blade Casting of Gas Turbine. [J]. Special Casting & Nonferrous Alloys (4):23-25(2002)
[1]杜晓明,,,,,,,,,,董秀琦,,,,,,,,,,朱丽娟,,,,,,,,,,施庭芳,,,,,,,,,,董红潮.气轮机隔板埋铸叶片断裂分析[J].特种铸造及有色合金,2002(04):23-25+2. DOI：

Du Xiaoming Dong Xiuqi Zhu Lijuan. Rupture Analysis on Closure with Embedded Blade Casting of Gas Turbine. [J]. Special Casting & Nonferrous Alloys (4):23-25(2002) DOI：

摘要

借助光学显微镜、扫描电镜等手段

对用埋铸法生产的T9815气轮机组隔板断裂部位的金相组织特征

宏观和微观断口形貌等进行了研究。结果表明 :由于高温铁水对叶片铸入部位的冲刷、增碳作用

使不锈钢铸铁化进而使叶片铸入部位强度降低

在拉应力的作用下导致叶片铸入部位开裂

Abstract

The microstructure characteristics

macro and micro fracture morphology of brittle broken embedded casting closure of T9815 turbines were investigated by means of metallographical examination and SEM. The results showed that the blade rupture resulted from the red hot molten iron

washing out and carburizeing the stainless steel piece so as to decrease the strength of the blades insert position.

关键词

埋铸隔板断裂增碳

Keywords

Closure with Embedded Blade CastingRuptureCarburization

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