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Investigation and simulation of the shear lip phenomenon observed in a high-speed abradable seal for use in aero-engines
Xue, Weihai; Gao, Siyang; Duan, Deli; Zheng, Hailiang; Li, Shu; Duan, DL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2017-09-15
Source PublicationWEAR
ISSN0043-1648
Volume386-387Pages:195-203
AbstractAbradable seals are used in the compressor sections of aero-engines, and their performance affects engine efficiency and durability. The sliding-induced surface damage between a type GH4169 turbine blade and a CuAlNiG seal coating was investigated under simulated working conditions using an improved high-speed rubbing test rig. The influence of different linear speeds (150, 300 m/s), incursion rates (5, 50, 500 mu m/s) and environment temperatures (300, 450 degrees C) were researched. According to variations in weight and height measurements of the blade test samples, and based on observations of the blade wear scar macro-morphologies, it was found that blade wear with a prominent shear lip increases with linear speed and temperature but decreases with incursion rate. The surface and cross-section morphologies, phase components of the blade and coating wear scars were analyzed using SEM, EDS and XRD. The formation mechanism of the shear lip was revealed for the first time. It was found that a double-layer shear lip was produced by the combined action of a shear mixed layer and blade matrix softening, both of which resulted from high-intensity frictional heating. (C) 2017 Elsevier B.V. All rights reserved.; Abradable seals are used in the compressor sections of aero-engines, and their performance affects engine efficiency and durability. The sliding-induced surface damage between a type GH4169 turbine blade and a CuAlNiG seal coating was investigated under simulated working conditions using an improved high-speed rubbing test rig. The influence of different linear speeds (150, 300 m/s), incursion rates (5, 50, 500 mu m/s) and environment temperatures (300, 450 degrees C) were researched. According to variations in weight and height measurements of the blade test samples, and based on observations of the blade wear scar macro-morphologies, it was found that blade wear with a prominent shear lip increases with linear speed and temperature but decreases with incursion rate. The surface and cross-section morphologies, phase components of the blade and coating wear scars were analyzed using SEM, EDS and XRD. The formation mechanism of the shear lip was revealed for the first time. It was found that a double-layer shear lip was produced by the combined action of a shear mixed layer and blade matrix softening, both of which resulted from high-intensity frictional heating. (C) 2017 Elsevier B.V. All rights reserved.
description.department[xue, weihai ; gao, siyang ; duan, deli ; li, shu] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [zheng, hailiang] aero engine grp corp china, shenyang inst engine design, shenyang 110015, liaoning, peoples r china
KeywordSeal Coating High-speed Rubbing Gh4169 Blade Compressor Blades Blade Shear Lip
Subject AreaEngineering, Mechanical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China [50675215]; Tribology Science Fund of State Key Laboratory of Tribology and Innovation [SKLTKF15B09]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78011
Collection中国科学院金属研究所
Corresponding AuthorDuan, DL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Xue, Weihai,Gao, Siyang,Duan, Deli,et al. Investigation and simulation of the shear lip phenomenon observed in a high-speed abradable seal for use in aero-engines[J]. WEAR,2017,386-387:195-203.
APA Xue, Weihai,Gao, Siyang,Duan, Deli,Zheng, Hailiang,Li, Shu,&Duan, DL .(2017).Investigation and simulation of the shear lip phenomenon observed in a high-speed abradable seal for use in aero-engines.WEAR,386-387,195-203.
MLA Xue, Weihai,et al."Investigation and simulation of the shear lip phenomenon observed in a high-speed abradable seal for use in aero-engines".WEAR 386-387(2017):195-203.
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