TGO非均匀增长对热障涂层应力演化和破坏机理的影响

刘扬; 全昌彪; 杨晓光

doi:10.13224/j.cnki.jasp.2020.06.003

TGO非均匀增长对热障涂层应力演化和破坏机理的影响

doi: 10.13224/j.cnki.jasp.2020.06.003

刘扬¹,
全昌彪¹,
杨晓光^2,3,4

计量
- 文章访问数: 757
- HTML浏览量: 161
- PDF量: 575
- 被引次数: 0
出版历程
- 收稿日期: 2019-12-04
- 刊出日期: 2020-06-28

Effect of non-uniform growth of TGO on stress development and failure mechanism of thermal barrier coatings

1.
Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China
2.
School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
3.
Beijing Key Laboratory of Aero-Engine Structure and Strength,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
4.
Beijing Aeronautical Engineering Technical Research Center,Beijing 100076,China

摘要

摘要: 采用内聚力模型和热生长氧化层(TGO)非均匀增长子程序,数值模拟了在热循环载荷作用下热障涂层(TBC)内部应力演化规律和开裂行为。涂层失效过程首先是源自陶瓷层(TC)内近波峰位置的拉伸和切应力共同主导的陶瓷层Ⅰ、陶瓷层Ⅱ混合型裂纹;随着循环数增加,则转向由TC内近波峰位置的切应力主导的Ⅱ型裂纹和波峰波谷中间的涂层厚度方向拉伸应力主导的Ⅰ型裂纹。整体非均匀增长和波谷均匀增长模式下的最大拉伸应力经过一定循环数后几乎不再随循环数而增加;而在波峰均匀增长和整体均匀增长模式下,最大拉伸应力则会随着循环数增加持续增长。整体非均匀增长、波谷非均匀增长模式下,20个循环后最大切应力出现在近波峰位置,分别为-16241 MPa和-15428 MPa;而整体波峰均匀增长和整体均匀增长模式下,最大切应力为-11382 MPa和-11198 MPa。对于波谷均匀增长和整体非均匀增长模式,在9个循环后出现界面裂纹。而对于波峰均匀增长和整体非均匀增长模式,在第17个循环出现界面裂纹。
- 应力演化 /
- 破坏机理 /
- 热障涂层(TBC) /
- 热生长氧化层(TGO) /
- 非均匀增长
Abstract: The cohesive force model and the thermal growth oxide (TGO) non-uniform growth subroutine were used to numerically simulate the stress development and cracking behavior of the thermal barrier coating (TBC) under thermal cycling loading. The cracking process was firstly caused by the mixed Ⅰ and Ⅱ cracks due to the tensile and shear stress in the near peak position in the top coat (TC); it turned to the mode Ⅱ crack due to the shear stress near the peak of the TC and the mode Ⅰ crack due to the tensile stress in the thickness direction in the middle of the peak and trough with the increasing number of thermal cycles. The maximum tensile stress in the overall non-uniform growth and the valley uniform growth mode almost did not increase with the number of cycles after some cycles; while in the peak uniform growth and the overall uniform growth mode, the maximum tensile stress increased continuously. In the global non-uniform growth mode and the valley non-uniform growth mode, the maximum shear stress of -16241 MPa and -15428 MPa appeared at the position near the peak after 20 cycles; while in the global uniform wave growth and global uniform growth mode, the maximum shear stress were -11382 MPa and -11198 MPa, respectively. For the uniform growth of the valley and the overall non-uniform growth mode, interface cracks appeared after 9 cycles; while for the uniform peak growth and overall non-uniform growth mode, interface cracks appeared in the 17th cycle.
- stress development /
- failure mechanism /
- thermal barrier coating(TBC) /
- ,thermal growth oxide(TGO) /
- non-uniform growth

HTML

参考文献(28)

[1]	DAROLIA R.Thermal barrier coatings technology:critical review,progress update,remaining challenges and prospects［J］.International Materials Reviews,2013,58(6):315-348.
[2]	PADTURE N P,GELL M,JORDAN E H.Thermal barrier coatings for gas-turbine engine applications［J］.Science,2002,296(5566):280-284.
[3]	CHEN L B.Yttria-stabilized zirconia thermal barrier coatings:a review［J］.Surface Review and Letters,2006,13(5):535-544.
[4]	管恒荣,李美姮,孙晓峰,等.高温合金热障涂层的氧化和失效研究［J］.金属学报,2002,38(11):1133-1140. GUAN Hengrong,LI Meiheng,SUN Xiaofeng,et al.Investigation on oxidation and failure of the thermal barrier coating deposited on superalloy［J］.Acta Metallurgica Sinica-Chinese Edition,2002,38(11):1133-1140.(in Chinese)
[5]	RABIEI A,EVANS A G.Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings［J］.Acta Materialia,2000,48(15):3963-3976.
[6]	SCHLICHTING K W,PADTURE N P,JORDAN E H,et al.Failure modes in plasma-sprayed thermal barrier coatings［J］.Materials Science and Engineering:A,2003,342(1/2):120-130.
[7]	MARTENA M,BOTTO D,FINO P,et al.Modelling of TBC system failure:stress distribution as a function of TGO thickness and thermal expansion mismatch［J］.Engineering Failure Analysis,2006,13(3):409-426.
[8]	RUUD J A,BARTZ A,BOROM M P,et al.Strength degradation and failure mechanisms of electron-beam physical-vapor-deposited thermal barrier coatings［J］.Journal of the American Ceramic Society,2001,84(7):1545-1552.
[9]	KARLSSON A M,EVANS A G.A numerical model for the cyclic instability of thermally grown oxides in thermal barrier systems［J］.Acta Materialia,2001,49(10):1793-1804.
[10]	贾攀峰,齐红宇,李少林,等.氧化层非均匀增长对热障涂层应力分布的影响［J］.航空动力学报,2018,33(7):1606-1611. JIA Panfeng,QI Hongyu,LI Shaolin,et al.Effects of oxide layer non-uniform growth on thermal barrier coating stress distribution［J］.Journal of Aerospace Power,2018,33(7):1606-1611.(in Chinese)
[11]	CHEN Z,HUANG H,ZHAO K,et al.Influence of inhomogeneous thermally grown oxide thickness on residual stress distribution in thermal barrier coating system［J］.Ceramics International,2018,44(14):16937-16946.
[12]	HAWA H A E,BHATTACHARYYA A,MAURICE D.Modeling of thermal and lattice misfit stresses within a thermal barrier coating［J］.Mechanics of Materials,2018,122:159-170.
[13]	TORKASHVAND K,POURSAEIDI E,MOHAMMADI M.Effect of TGO thickness on the thermal barrier coatings life under thermal shock and thermal cycle loading［J］.Ceramics International,2018,44(8):9283-9293.
[14]	ZHU W,ZHANG Z B,YANG L,et al.Spallation of thermal barrier coatings with real thermally grown oxide morphology under thermal stress［J］.Materials and Design,2018,146:180-193.
[15]	JIANG J,JIANG L,CAI Z,et al.Numerical stress analysis of the TBC-film cooling system under operating conditions considering the effects of thermal gradient and TGO growth［J］.Surface and Coatings Technology,2019,357:433-444.
[16]	EVANS A G,MUMM D R,HUTCHINSON J W,et al.Mechanisms controlling the durability of thermal barrier coatings［J］.Progress in Materials Science,2001,46(5):505-553.
[17]	CHE Chang,WU Guoqing,QI Honguy,et al.Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings［J］.Surface and Coatings Technology,2009,203(20):3088-3091.
[18]	ABBAS A,GUO H,SHAHID M R.Comparative study on effect of oxide thickness on stress distribution of traditional and nanostructured zirconia coating systems［J］.Ceramics International,2013,39:475-481.
[19]	SHEN Q,YANG L,ZHOU Y C,et al.Models for predicting TGO growth to rough interface in TBCs［J］.Surface and Coatings Technology,2017,325:219-228.
[20]	EVANS A G,MUMM D R,HUTCHINSON J W,et al.Mechanisms controlling the durability of thermal barrier coatings［J］.Progress in Materials Science,2001,46(5):505-553.
[21]	BEDNARZ P.Finite element simulation of stress evolution in thermal barrier coating system［D］.Aachen,Germany:Rheinicsh-Westflishe Technische Hochschule (RWTH) Aachen Unviersity,2007.
[22]	RANJBAR-FAR M,ABSI J,MARIAUX G,et al.Simulation of the effect of material properties and interface roughness on the stress distribution in thermal barrier coatings using finite element method［J］.Materials and Design,2010,31(2):772-781.
[23]	RSLER J,BKER M,AUFZUG K.A parametric study of the stress state of thermal barrier coatings:Part Ⅰ creep relaxation［J］.Acta Materialia,2004,52(16):4809-4817.
[24]	BIAAS M.Finite element analysis of stress distribution in thermal barrier coatings［J］.Surface and Coatings Technology,2008,202(24):6002-6010.
[25]	AKTAA J,SFAR K,MUNZ D.Assessment of TBC systems failure mechanisms using a fracture mechanics approach［J］.Acta Materialia,2005,53(16):4399-4413.
[26]	BUMGARDNER C,CROOM R,LI X.High-temperature delamination mechanisms of thermal barrier coating:in-situ digital image correlation and finite element analyses［J］.Acta Materialia,2017,128:54-63.
[27]	XU T,HE M Y,EVANS A G,et al.A numerical assessment of the durability of thermal barrier systems that fail by ratcheting of the thermally grown oxide［J］.Acta Materialia,2003,51(13):3807-3820.
[28]	HE M Y,EVANS A G,HUTCHINSON J W,et al.The ratcheting of compressed thermally grown thin films on ductile sub-strates［J］.Acta Materialia,2000,48(10):2593-2601.