Interfacial fracture energy-mechanical behaviour relationship in Al2O3/SiC and Al2O3/TiN nanocomposites

Jiao, S.; Jenkins, M. L.; Davidge, R. W.

doi:10.1016/s1359-6454(96)00168-1

Cited by 77 publications

(38 citation statements)

References 19 publications

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“…The ratio of the specific grain boundary energy is J 11 :J 22 :J 12 :J 13 :J 23 =1:4:1:1.4:4.5 in the simulation of microstructural evolution of two-phase ceramic tool material. These values are comparable to the values of Al 2 O 3 and SiC ( Handwerker et al, 1990;Tanaka & Kohyama, 2003;Jiao et al, 1997). The simulation numerical data are the average results of the 10 independent simulations so as to eliminate the statistical fluctuations.…”

Section: Simulation Conditionssupporting

confidence: 68%

Numerical Simulation of Fabrication for Ceramic Tool Materials

Fang¹,

Xu²,

Yang³

et al. 2012

Ceramic Materials - Progress in Modern Ceramics

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Section: Simulation Conditionssupporting

confidence: 68%

Numerical Simulation of Fabrication for Ceramic Tool Materials

Fang¹,

Xu²,

Yang³

et al. 2012

Ceramic Materials - Progress in Modern Ceramics

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“…In particular, the mode of crack growth depends on the strength of different boundaries in a nanoceramic specimen. For example, in Al 2 O 3 -SiC ceramic nanocomposites, the interfacial fracture energy between Al 2 O 3 and SiC is twice that of the alumina GB fracture energy [26]. Besides, in such nanocomposites, the compressive stresses generated by SiC nanoparticles located within matrix grains may reinforce the Al 2 O 3 /Al 2 O 3 GBs [13].…”

Section: Fracture Processes In Nanoceramics: General Aspects and Key mentioning

confidence: 99%

Micromechanics of fracturing in nanoceramics

Ovid’ko

2015

Phil. Trans. R. Soc. A.

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An overview of key experimental data and theoretical representations on fracture processes in nanoceramics is presented. The focuses are placed on crack growth in nanoceramics and their toughening micromechanics.Conventional toughening micromechanisms are discussed which effectively operate in both microcrystalline-matrix ceramics containing nanoinclusions and nanocrystalline-matrix ceramics. Particular attention is devoted to description of special (new) toughening micromechanisms related to nanoscale deformation occurring near crack tips in nanocrystalline-matrix ceramics. In addition, a new strategy for pronounced improvement of fracture toughness of ceramic materials through fabrication of ceramic-graphene nanocomposites is considered. Toughening micromechanisms are discussed which operate in such nanocomposites containing graphene platelets and/or few-layer sheets.

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“…7,[10][11][12][13]21,22 The only generally accepted fact seems to be the change of fracture mode from intergranular in monolithc alumina to mixed, or transgranular in nanocomposites, with corresponding increase of fracture energy. Levin et al suggested that the toughening in particulate composites was the result of fine balance between matrix weakening and grain boundary strengthening by residual stresses around intragranular SiC particles.…”

Section: Resultsmentioning

confidence: 99%

“…22 The grain boundary strengthening effect of SiC nanoinclusions has been confirmed by measurement of grain boundary-interface dihedral angles in Al 2 O 3 /SiC by Jiao et al who found that the interfacial fracture energy between SiC and alumina is more than twice the alumina grain boundary fracture energy. 21 Carroll et al, concluded that the fracture toughness of nanocomposites increase with the SiC particle size, but the increase is negligible with respect to the monolithic alumina. Moreover, according to the authors, any Fig.…”

Section: Resultsmentioning

confidence: 99%