As one of the key performance indicators of composites, thermal shock performance may be related to sample size. In order to explore the thermal shock performance of SiCf/SiC composites, high temperature water quenching experiments at 1,200℃ were conducted with SiCf/SiC rectangle composite samples prepared by polymer infiltration pyrolysis (PIP) process. In addition, the above water quenching experiments were simulated by ABAQUS finite element software. In this study, three samples (i.e., S4, S8, S12) from SiCf/SiC composites with bending strength and interlaminar tensile strength of 553 MPa and 19.2 MPa, respectively were taken as the subjects of water quenching experiments. During the water quenching experiments, the samples started to form microcracks after 3 cycles, which expanded with the increase of the number of cycles. After 8 cycles, matrix cracks started to appear in S8 and S12 while a crack was observed extending along the 0° fiber direction in 5/6 layer at one end of S12. According to the finite element analysis results, the cracks in the 6/7 layers of S4 and S8 were firstly cracked and then closed, which might be due to space occupation of the secondary cracks caused by main cracks's propagation. The outcomes of stress calculation demonstrated that the thermal stress of the samples in this study increased with the increase of sample size due to the temperature gradient. The thermal stresses in S8 and S12 reached 40 MPa, resulting matrix cracks and extension.
JIAO Jian
,
JIANG Zhuoyu
,
GAO Ye
,
ZHOU YiRan
,
WANG Jiaqi
. Water quenching failure behavior of SiCf/SiC composites and simulation analysis[J]. Science & Technology Review, 2023
, 41(9)
: 36
-42
.
DOI: 10.3981/j.issn.1000-7857.2023.09.004
[1] Katoh Y, Snead L L, Henager C H, et al. Current status and recent research achievements in SiC/SiC composites[J]. Journal of Nuclear Materials, 2014, 455(1-3): 387-397.
[2] Jones R H, Giancarli L, Hasegawa A, et al. Promise and challenges of SiCf/SiC composites for fusion energy applications[J]. Journal of Nuclear Materials, 2002, 307(3): 1057-1072.
[3] 焦健, 陈明伟 . 新一代发动机高温材料—陶瓷基复合材料的制备、性能及应用[J]. 航空制造技术, 2014(7): 62-69.
[4] Zrida H, Fernberg P, Ayadi Z, et al. Micro cracking in thermally cycled and aged Carbon fibre/polyimide laminates[J]. International Journal of Fatigue, 2017, 94(1): 121-130.
[5] 陈丽敏, 索相波, 王安哲, 等 . ZrB2基超高温陶瓷材料抗热震性能及热震失效机制研究进展[J]. 硅酸盐学报, 2018, 46(9): 1235-1242.
[6] Gupta S K, Hojjati M. Thermal cycle effects on laminated composite plates containing voids[J]. Journal of Composite Materials, 2019, 53(4): 489-501.
[7] Zhang C, Zhao M, Liu Y, et al. Tensile strength degradation of a 2.5D-C/SiC composite under thermal cycles in air[J]. Journal of the European Ceramic Society, 2016, 36(12): 3011-3019.
[8] Han W B, Zhou S B, Zhang J H. Single-cycle thermalshock resistance of ZrB2-SiCnp ceramic composites[J]. Ceramics International, 2014, 40(10): 16665-16669.
[9] Yang Z, Liu H. Effects of thermal aging on the cyclic thermal shock behavior of oxide/oxide ceramic matrix composites[J]. Materials Science and Engineering, 2020, 769(2): 138494.1-138494.8.
[10] Yang Z, Liu H. A continuum damage mechanics model for 2-D woven oxide/oxide ceramic matrix composites under cyclic thermal shocks [J]. Ceramics International, 2020, 46(5): 6029-6037.
[11] Gui K, Hu P, Hong W, et al. Microstructure, mechanical properties and thermal shock resistance of ZrB2-SiC-Cf composite with inhibited degradation of carbon fibers[J]. Journal of Alloys and Compounds, 2017, 706: 16-23.
[12] Wang C A, Wang M F. Thermal shock behavior of ZrB2-SiC ceramics with different quenching media[J]. Frontiers of Materials Science, 2013, 7(2): 184-189.
[13] He Q C, Li H J, Yin X M, et al. Microstructure, mechanical and anti-ablation properties of SiCnw/PyC core-shell networks reinforced C/C-ZrC-SiC composites fabricated by a multistep method of chemical liuid-vapor deposition-Science Direct[J]. Ceramics International, 2019, 45(16): 20414-20426.
[14] Li S, Zhang Y, Han J, et al. Fabrication and characterization of SiC whisker reinforced reaction bonded SiC composite[J]. Ceramics International, 2013, 39(1): 449-455.
[15] 庞旭明, 周剑秋, 杨晶歆, 等 . 含孔隙及界面热阻的复合材料有效导热系数[J].中国有色金属学报, 2016, 26(8): 1668-1674.
[16] 陆思达, 高希光, 宋迎东. 基于有限元法的平纹编织C/SiC 复合材料等效导热系数预测方法[J]. 航空动力学报, 2014, 29(7): 1574-1582.
[17] Li Z X, Li X Q, Zhang B X, et al. Enhanced thermal and mechanical properties of optimized SiCf/SiC composites with in-situ CNTs on PyC interface-science Direct[J]. Ceramics International, 2020, 46(11): 18071-18078.
[18] 刘伟峰 . SiCf/SiC 复合材料的制备及导热性能研究[D].湖南: 国防科学技术大学, 2006.
[19] 赵爽, 杨自春, 周新贵. 先驱体浸渍裂解结合化学气相渗透工艺下二维半和三维织构 SiC/SiC 复合材料的结构与性能[J]. 材料导报, 2018, 32(16): 2715-2718.
[20] 王亦菲, 刘伟峰, 马青松. PIP法制备SiCf/SiC复合材料导热性能影响因素研究[J]. 稀有金属材料与工程, 2009, 38(增刊2): 466-469.
[21] Liu J G, Liu W, Wang J X. Influence of interfacial adhesion strength on formability of AA505/polyethylene/AA5052 sandwich sheet[J]. Transactions of Nonferrous Metals Society of China, 2012, 22: s395-s401.
[22] 寇剑锋, 徐绯, 郭家平, 等 . 黏聚力模型破坏准则及其参数选取[J]. 机械强度, 2011, 33(5): 714-718.
