Measurement of High Strain Rate Indentation-Induced Deformations in Al₂O₃/SiC_p Composite Ceramics

Abstract:

Al₂O₃/SiC_p composite ceramics with 2 vol%, 5 vol% and 10 vol% SiC nanoparticles additions were hot pressed at 1650 °C. The polished ceramic discs were prepared and indented at high strain rate using a compressed gas gun with tiny tungsten carbide bullets. The microstructure and mechanical properties were obtained to explain the dynamic deformation behavior of Al₂O₃/SiC_p ceramics. Cr³⁺ fluorescence mapping was used to examine the residual stress and plastic deformation induced on the surface of each target. The residual compressive stress area around the crater was evenly distributed, while the greatest plastic deformation was found at the hitting point of the bullet tip. It can be calculated that the high temperature of 1400K may be produced at the instant of the bullet impact and result in large plastic deformation region and low residual stress of the Al₂O₃/SiC_p ceramic.

• Periodical: Materials Science Forum (Volume 1001)
• Pages: 35-40
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1001.35
• Online since: July 2020
• Authors: Yuan Fei Gao, Zhao Xia Si*, Xiao Yan Wang, Meng Yu Zhao
• Keywords: Al₂O₃/ SiC, Composite Ceramic, Deformation Measurement, High Strain Rate

References

[1] P.J. Hazell, C.J. Roberson and M. Moutinho, The design of mosaic armour: The influence of tile size on ballistic performance, Mater. & Design. 29 (2008) 1497-1503.

DOI: 10.1016/j.matdes.2008.03.003

[2] S. Acharya, S. Bysakh, V. Parameswaran, et al, Deformation and failure of alumina under high strain rate compressive loading, Ceram. Int. 41 (2015) 6793-6801.

DOI: 10.1016/j.ceramint.2015.01.126

[3] J. Pittari, G. Subhash, J. Zheng, et al, The rate-dependent fracture toughness of silicon carbide-and boron carbide-based ceramics, J. Eur. Ceram. Soc. 35 (2015) 4411-4422.

DOI: 10.1016/j.jeurceramsoc.2015.08.027

[4] Y. Xu, F. Dai, Dynamic response and failure mechanism of brittle rocks under combined compression-shear loading experiments, Rock Mech. Rock Eng. 51 (2018) 747-764.

DOI: 10.1007/s00603-017-1364-2

[5] N. Xu, W.W. Chen, S. Xin, et al, Dynamic Failure of Borosilicate Glass Under Compression/Shear Loading Experiments, J. Am. Ceram. Soc. 90 (2010) 2556-2562.

DOI: 10.1111/j.1551-2916.2007.01819.x

[6] H. Luo, W. Chen, Dynamic Compressive Response of Intact and Damaged AD995 Alumina, Int. J. Appl. Ceram. Tech. 3 (2010) 254-260.

DOI: 10.1111/j.1744-7402.2004.tb00177.x

[7] K. Niihara, New design concept of structural ceramics-ceramic nanocomposites, J. Ceram. Soc. JPN. 99 (1991) 974-982.

DOI: 10.2109/jcersj.99.974

[8] Y.F. Gao, S.Z. Si, L.J. Wang, et al, Stress Distribution and Deformation Behavior of Alumina Ceramic after Mini Bullet Dynamic Impact, Key Eng. Mater. 768 (2018) 140-145.

DOI: 10.4028/www.scientific.net/kem.768.140

[9] S. Guo, R.I. Todd. Quantitative optical fluorescence microprobe measurements of stresses around indentations in AlO and AlO/SiC nanocomposites: The influence of depth resolution and specimen translucency, Acta Mater. 59 (2011) 2637-2647.

DOI: 10.1016/j.actamat.2010.12.055

[10] D. Hu, Y. Zhang, Z. Shen, et al, Investigation on the ballistic behavior of mosaic SiC/UHMWPE composite armor systems, Ceram. Int. 43 (2017) 10368-10376.

DOI: 10.1016/j.ceramint.2017.05.071

[11] G. Ravichandran, G. Subhash, Critical Appraisal of Limiting Strain Rates for Compression Testing of Ceramics in a Split Hopkinson Pressure Bar, J. Am. Ceram. Soc. 77(2010) 263-267.

DOI: 10.1111/j.1151-2916.1994.tb06987.x

[12] H.C. Rogers. Adiabatic Plastic Deformation, Annu. Rev. Mater. Res. 9 (2003) 283-311.