Thermal decohesion model validity for polycrystalline advanced ceramics

Petrovic, Marin; Kljuno, Elvedin

International Journal of Advanced and Applied Sciences

Int. j. adv. appl. sci.

EISSN: 2313-3724

Print ISSN: 2313-626X

Volume 4, Issue 7 (July 2017), Pages: 1-4

Title: Thermal decohesion model validity for polycrystalline advanced ceramics

Author(s): Marin Petrovic *, Elvedin Kljuno

Affiliation(s):

Mechanical Engineering Faculty, University of Sarajevo, Sarajevo, Bosnia and Herzegovina

https://doi.org/10.21833/ijaas.2017.07.001

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Abstract:

Polycrystalline advanced ceramics is a synthetic product produced by sintering together selected carbide or other tough material grains in a metal matrix. Due to wide and sensitive application of these materials, the accurate and efficient determination of the associated fracture mechanisms is of fundamental importance to material manufacturers and end users alike. An experimental investigation of two different grades of advanced ceramics was performed. The material was found to follow a thermal-decohesion model suggesting that adiabatic conditions occur at the crack tip during fracture.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords: Experimental mechanics, Advanced ceramics, Brittle fracture, Fracture mechanics, Thermal decohesion model

Article History: Received 23 March 2017, Received in revised form 8 May 2017, Accepted 18 May 2017

Digital Object Identifier:

https://doi.org/10.21833/ijaas.2017.07.001

Citation:

Petrovic M and Kljuno E (2017). Thermal decohesion model validity for polycrystalline advanced ceramics. International Journal of Advanced and Applied Sciences, 4(7): 1-4

http://www.science-gate.com/IJAAS/V4I7/Petrovic.html

References:

Carolan D, Petrovic M, Ivankovic A, and Murphy N (2010). Fracture properties of PCBN as a function of loading rate. Key Engineering Materials, 417(418): 669–672. https://doi.org/10.4028/www.scientific.net/kem.452-453.457

Carslaw HS and Jaeger JC (1959). Conduction of heat in solids. Oxford Clarendon Press, Oxford, UK.

Kalthoff JF (1985). On the measurement of dynamic fracture toughness-A review of recent work. International Journal of Fracture, 27(3): 277–298. https://doi.org/10.1007/BF00017973

Kapoor R, Paul B, Raveendra S, Samajdar I, and Chakravartty JK (2009). Aspects of dynamic recrystallization in cobalt at high temperatures. Metallurgical and Materials Transactions A, 40(4): 818-827. https://doi.org/10.1007/s11661-009-9782-8

Karimpoor AA, Erb U, Aust KT, and Palumbo G (2003). High strength nanocrystalline cobalt with high tensile ductility. Scripta Materialia, 49(7): 651-656. https://doi.org/10.1016/S1359-6462(03)00397-X

Paul B, Kapoor R, Chakravartty JK, Bidaye AC, Sharma IG, and Suri AK (2009). Hot working characteristics of cobalt in the temperature range 600–950 C. Scripta Materialia, 60(2): 104-107. https://doi.org/10.1016/j.scriptamat.2008.09.012

Petrovic M, Carolan D, Ivankovic A, and Murphy N (2011). Role of rate and temperature on fracture and mechanical properties of PCD. Key Engineering Materials, 452(453): 153-156.

Petrovic M, Carolan D, Kanyanta V, and Ivankovic A (2009). Fracture and mechanical properties of PCBN as a function of loading rate and temperature. In the 6th International Congress of Croatian Society of Mechanics (ICCSM'09). Dubrovnik, Croatia.

Petrovic M, Voloder A, and Ismic Dz (2012). Young's modulus of polycrystalline diamond as a function of temperature and loading regimes. International Virtual Journal Machines, Technologies, Materials, 9: 33-35. Available online at: http://mech-ing.com/journal/Archive/2012/9/54_Petrovic.pdf

Rager A (2003). Analysis of high rate fracture tests of polymers. Ph.D. Dissertation, Imperial College London, London, UK.

Williams JG and Hodgkinson J (1981). Crack-blunting mechanisms in impact tests on polymers. Royal Society of London A: Mathematical, Physical and Engineering Sciences, 375(1761): 231-247.