Analysis of a Directionally Solidified (DS) GTD-111 Turbine Blade Failure

被引：8
|
作者：
Sabri, Khier [1 ]
Gaceb, Mohamed [1 ]
Si-Chaib, Mohamed Ouali [1 ]
机构：
[1] Univ MHamed Bougara Boumerdes, Hydrocarbons & Chem Fac, Lab Petr Equipments Reliabil & Mat, UMBB, Boumerdes, Algeria
来源：
JOURNAL OF FAILURE ANALYSIS AND PREVENTION | 2020年 / 20卷 / 04期
关键词：
(DS) GTD-111 superalloy; Erosion; Pitting corrosion; Needle sigma-phase; gamma; Ni-3(Al; Ti); precipitates; OXIDATION BEHAVIOR; GAMMA-GAMMA'; BOND COATS; MICROSTRUCTURE; SUPERALLOY; PERFORMANCE; PREDICTION; CORROSION;
D O I：
10.1007/s11668-020-00920-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The purpose of this paper is to clarify the impact of pitting corrosion and erosion on the directionally solidified (DS) GTD-111 turbine blade behavior. Moreover, the pitting corrosion and oxidation phenomena engendered inside cooling channels of the turbine blade are utterly highlighted. Other features such as the eta(Ni-3, Ti) platelets nucleation, needle sigma-phase precipitation at the interface NiPtAl/(DS) GTD-111 substrate are exhibited as well. Finally, the different microstructural changes in (NiPtAl) coating strata against hot corrosion, oxidation and interaction with (DS) GTD-111 substrate are revealed and argued.
引用
收藏
页码：1162 / 1174
页数：13
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