Hot corrosion failure in the first stage nozzle of a gas turbine engine
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- 作者：B. Salehnasaba ; behnam.salehnasab@gmail.com" class="auth_mail" title="E-mail the corresponding author ; behnam.salehnasab@iaud.ac.ir" class="auth_mail" title="E-mail the corresponding author ; E. Poursaeidib ; S.A. Mortazavic ; G.H. Farokhiand
- 关键词：Failure analysis ; Hot corrosion ; Gas turbine nozzle ; Nimonic105
- 刊名：Engineering Failure Analysis
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：60
- 期：Complete
- 页码：316-325
- 全文大小：2003 K
文摘
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A failure analysis of the first stage nozzle in a gas turbine engine is presented.
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Fractography studies showed that fractures are occurred due to HTHC and thermal fatigue mechanisms.
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FEM results showed good agreement between the high stress region and the broken place.
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Intergranular fracture occurred in the trailing edge of blade.
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The blade surface had a greenish-tone oxide layer resulted from the NiO formation.