|
|
Indentation Size Effect for the Hardness of B4C/TiB2 Ceramics |
Weiming GUO(), Dawang TAN, Lixiang WU, Huatai LIN, Shanghua WU |
School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China |
|
Cite this article:
Weiming GUO, Dawang TAN, Lixiang WU, Huatai LIN, Shanghua WU. Indentation Size Effect for the Hardness of B4C/TiB2 Ceramics. Chinese Journal of Materials Research, 2017, 31(12): 894-900.
|
Abstract Indentation size effect on the hardness measurement of hot-pressed 80%B4C/TiB2 and 20%B4C/TiB2 (in volume fraction) was investigated, while the indentation morphology was also characterized. In comparison with 20%B4C/TiB2, 80%B4C/TiB2 possesses higher relative density and hardness, but lower toughness. The two ceramics exhibit clearly the indentation size effect (ISE), whereby the measured hardness decreases with the increasing load. However, a slight increase of the measured hardness for 80%B4C/TiB2 with the increasing load, which may be ascribed to the crack occurrence for indentations during loading. The observed ISE-phenomena for the two ceramics can be described via several existing theory models, however among them the modified proportional specimen resistance model is the most suitable one. Accordingly, the ISE-degree for 80%B4C/TiB2 ceramic is slightly stronger than that for 20%B4C/TiB2 ceramic, while the true hardness of 80%B4C/TiB2 ceramic should be 4.4~6.5 GPa higher than that of 20%B4C/TiB2 ceramic.
|
Received: 25 November 2016
|
|
Fund: Supported by National Natural Science Foundation of China (Nos. 51674236 & 51034012) |
[1] | T. J. Holmquist, G. R. Johnson, Response of boron carbide subjected to high-velocity impact,International Journal of Impact Engineering, 2008, 35(8): 742 | [2] | S. Chen, D. Z. Wang, J. Y. Huang, Z. F. Ren, Synthesis and characterization of boron carbide nanoparticles,Applied Physics A, 2004, 79(7): 1757 | [3] | A. Sinha, T. Mahata, B. P. Sharma, Carbothermal route for preparation of boron carbide powder from boric acid-citric acid gel precursor,Journal of Nuclear Materials, 2002, 301(2-3): 165 | [4] | L. G. Jacobsohn, M. Nastasi, L. L. Daemen, Z. Jenei, P. Asoka-Kumar, Positron annihilation spectroscopy of sputtered boron carbide films,Diamond and Related Materials, 2005, 14(2): 201 | [5] | J. Y. Zhang, Z. Y. Fu, W. M. Wang, Fabrication of Titanium Diboride-Cu Composite by Self-High Temperature Synthesis plus Quick Press,Journal of Materials Science & Technology, 2005, 21(6): 841 | [6] | A. K. Suri, C. Subramanian, J. K. Sonber, T. S. R.Ch. Murthy, Synthesis and consolidation of boron carbide: a review,International Materials Reviews, 2010, 55(1): 4 | [7] | W. M. Wang, Z. Y. Fu, H. Wang, R. Z. Yuan, Influence of hot pressing sintering temperature and time on microstructure and mechanical properties of TiB2 ceramics,Journal of the European Ceramic Society, 2002, 22(7): 1045 | [8] | H. R. Baharvandi, A. M.Hadian, Pressureless Sintering of TiB2-B4C Ceramic Matrix Composite,Journal of Materials Engineering and Performance, 2007, 17(6): 838 | [9] | S. Yamadaa, K. Hiraob, Y. Yamauchib, S. Kanzaki, High strength B4C-TiB2 composites fabricated by reaction hot-pressing,Journal of the European Ceramic Society, 2003, 23(7): 1123 | [10] | K. Sangwal, B. Surowska, P.B?aziak, Relationship between indentation size effect and material properties in the microhardness measurement of some cobalt-based alloys,Materials Chemistry and Physics, 2003, 80(2): 428 | [11] | H. Li, R. C.Bradt, The microhardness indentation load size effect in rutile and cassiterite single crystals,Journal of Materials Science, 1993, 28(4): 917 | [12] | J. H. Gong, J. J.Wu,Z. D.Guan, Examination of the Indentation Size Effect in Low-load Vickers Hardness Testing of Ceramics,Journal of the European Ceramic Society, 1999, 19(15): 2625 | [13] | A. Carpinteri, S.Puzzi, A fractal approach to indentation size effect,Engineering Fracture Mechanics, 2006, 73(15): 2110 | [14] | A. Nino, A. Tanaka, S. Sugiyama, H. Taimatsu, Indentation Size Effect for the Hardness of Refractory Carbides,Materials Transactions, 2010, 51(9): 1621 | [15] | A. Mukhopadhyay, G. B. Raju, B. Basu, A.K. Suri, Correlation between phase evolution, mechanical properties and instrumented indentation response of TiB2-based ceramics,Journal of the European Ceramic Society, 2009, 29(3): 505 | [16] | K.Sangwal, Review: Indentation size effect, indentation cracks and microhardness measurement of brittle crystalline solids—some basic concepts and trends, Crystal Research and Technology, 2009, 44(10): 1019 |
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|