| METALS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
| Research on the Influence Factors of the Interfacial Crack Propagation Behavior of Thermal Spraying Parts |
| WEN Feijuan1,2, DONG Lihong2, WAND Haidou2, LYU Zhenlin1, DI Yuelan2
|
1 School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048;
2 National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072 |
|
|
|
|
Abstract Thermal spraying technology has been widely used in improving the life of components, but the existence of interface cracks has an obvious effect on the life of parts. In this paper, the effects of residual stress, coating thickness and initial crack length on the interface crack propagation were studied by using the finite element method. The result showed that the increase of residual compressive stress leaded to the decrease of the critical load and the increase of the phase angle of the crack tip, which was more likely to have the interface crack. The increase of residual stress could result in the increase of critical load and the decrease of the stress phase angle of the crack tip, which was more prone to generate cracks perpendicular to the interface. At the same time, the interface crack in the thick coating was the main crack mode, and was mainly shear failure. Thin coating was easy to produce cracks perpendicular to the interface, with tensile failure as the leading. The longer the initial crack length, the more prone to peeling of the coating and the substrate, resulting in failure of the coating. The three point bending test was used to verify the crack with different initial length, and the experimental results were similar to the finite element simulation results, which verified the correctness of the finite element simulation, and provided a scientific basis and theoretical basis for the accurate control of the interface crack propagation of the thermal spraying parts.
|
|
Published: 18 September 2018
|
|
|
|
|
1 Zhang X C. Basic researches on the structural integrity and life prediction of plasma-sprayed coating based systems aiming for remanufactu-ring[D]. Shanghai: Shanghai Jiao Tong University,2007(in Chinese).
张显程.面向再制造的等离子喷涂层结构完整性及寿命预测基础研究[D].上海:上海交通大学,2007.
2 Han M, Huang J H, Chen S H. Research progress and review on key problems of stress and failure mechanism of thermal barrier coating[J]. Journal of Aeronautical Materials,2013,33(5):83(in Chinese).
韩萌,黄继华,陈树海.热障涂层应力与失效机理若干关键问题的研究进展与评述[J].航空材料学报,2013,33(5):83.
3 Fu L H. Finite element simulations on the erosion process and crack propagation of EB-PVD thermal barrier coatings[D]. Xiangtan: Xiangtan University,2013(in Chinese).
傅丽华.EB-PVD热障涂层冲蚀过程及其裂纹扩展的有限元模拟[D].湘潭:湘潭大学,2013.
4 Jiang Y, Xu B S, Wang H D, et al. Determination of residual stresses within plasma spray coating using Moiré interferometry method[J]. Applied Surface Science,2011,257(6):2332.
5 Zhu J, Xie H, Hu Z, et al. Residual stress in thermal spray coatings measured by curvature based on 3D digital image correlation technique[J]. Surface & Coatings Technology,2011,206(6):1396.
6 Wang D Z, Hu Q W, Zeng X Y. Residual stress and cracking behaviors of Cr13Ni5Si2, based composite coatings prepared by laser-induction hybrid cladding[J]. Surface & Coatings Technology,2015,274:51.
7 Renzelli M, Mughal M Z, Sebastiani M, et al. Design, fabrication and characterization of multilayer Cr-CrN thin coatings with tailored residual stress profiles[J]. Materials & Design,2016,112:162.
8 Nazir M H, Khan Z A, Stokes K. Analysing the coupled effects of compressive and diffusion induced stresses on the nucleation and propagation of circular coating blisters in the presence of micro-cracks[J]. Engineering Failure Analysis,2016,70:1.
9 Deng H, Shi H, Tsuruoka S. Influence of coating thickness and temperature on mechanical properties of steel deposited with Co-based alloy hardfacing coating[J]. Surface & Coatings Technology,2010,204(23):3927.
10 Li X N, Liang L H, Xie J J, et al. Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates[J]. Surface & Coatings Technology,2014,258:1039.
11 Kwon J Y, Lee J H, Jung Y G, et al. Effect of bond coat nature and thickness on mechanical characteristic and contact damage of zirconia-based thermal barrier coatings[J]. Surface & Coatings Technology,2006,201(6):3483.
12 Xu Z H, Yang Y, Huang P, et al. Determination of interfacial pro-perties of thermal barrier coatings by shear test and inverse finite element method[J]. Acta Materialia,2010,58(18):5972.
13 Zotov N, Bartsch M, Eggeler G. Thermal barrier coating systems—Analysis of nanoindentation curves[J]. Surface & Coatings Techno-logy,2009,203(14):2064.
14 Zhao P F, Sun C A, Zhu X Y, et al. Fracture toughness measurements of plasma-sprayed thermal barrier coatings using a modified four-point bending method[J]. Surface & Coatings Technology,2010,204(24):4066.
15 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.
16 Clyne T W, Gill S C. Residual stresses in thermal spray coatings and their effect on interfacial adhesion: A review of recent work[J]. Journal of Thermal Spray Technology,1996,5(4):401.17 Elizalde M R, Sánchez J M, Martínez-Esnaola J M, et al. Interfacial fracture induced by cross-sectional nanoindentation in metal-ceramic thin film structures[J]. Acta Materialia,2003,51(14):4295.
18 Anderson T L. Fracture mechanics: Fundamentals and applications[M]. CRC Press,2015.
19 Nie P L. Fractural study of interfacial adhesion measurement with interfacial toughness for coating/substrate system[D]. Shanghai: Shanghai Jiao Tong University,2009(in Chinese).
聂璞林.界面断裂韧性与膜基结合性能关系的研究[D].上海:上海交通大学,2009.
20 Thurn G, Schneider G A, Bahr H A, et al. Toughness anisotropy and behavior of plasma sprayed ZrO2 thermal barrier coatings[J]. Surface & Coatings Technology,2000,123(2):147. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2018, Vol. 32 
