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- W4235383498 abstract "In order to design and fabricate a new Al2O3/TiC/TiN micro-nano-composite ceramic tool material with high mechanical properties, a microstructure evolution model of ceramic tool material during sintering process was established to optimize the sintering parameters based on cellular automata. Furthermore, the effects of TiC nano-particles on mechanical properties of the prepared material were investigated. Toughening and strengthening mechanisms of TiC nano-particles were revealed by examining SEM images of microstructure and crack propagation. The results indicated that the mechanical properties increased first and then decreased as TiC nano-particles volume fractions of prepared material rose. When Al2O3, TiC, TiN micro-particles and TiC nano-particles were 60%, 20%, 10% and 10%, respectively, ceramic material prepared exhibited outstanding mechanical properties with Vickers hardness of 20.8 GPa, flexure strength of 881.4 MPa, and fracture toughness of 7.8 MPa m1/2 obtained at the sintering temperature of 1650 °C with holding time for15min through the simulation. The main strengthening and toughening mechanisms of the prepared materials could be attributed to transgranular fracture, intergranular fracture, crack deflection and crack bridging." @default.
- W4235383498 created "2022-05-12" @default.
- W4235383498 date "1927-01-01" @default.
- W4235383498 modified "2023-10-01" @default.
- W4235383498 title "More weather studies help aviation, fire fighting and lake level work" @default.
- W4235383498 doi "https://doi.org/10.1016/s0016-0032(27)90096-9" @default.
- W4235383498 hasPublicationYear "1927" @default.
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