Cho, KS Kim, YW Choi, HJ Lee, JG 2024-01-21T19:35:07Z 2024-01-21T19:35:07Z 2021-09-04 1996-06 0002-7820 https://pubs.kist.re.kr/handle/201004/144435 A process based on liquid-phase sintering and subsequent annealing for grain growth is presented to obtain lit situ-toughened SiC-30 wt% TiC composites, Its microstructures consist of uniformly distributed elongated alpha-SiC grains, matrixlike TiC grains, and yttrium aluminum garnet (YAG) as a grain boundary phase, The composites mere fabricated from beta-SiC and TiC powders with the liquid forming additives of Al2O3 and Y2O3 by hot pressing. During the subsequent heat treatment, the beta --> alpha or phase transformation of SiC led to the in situ growth of elongated alpha-SiC grains, The fracture toughness of the SiC-30 wt% TiC composites after 6-h annealing mas 6.9 MPa . m(1/2), approximately 60% higher than that of as-hot-pressed composites (4.4 MPa . m(1/2)). Bridging and crack deflection by the elongated alpha-SiC grains appear to account for the increased toughness of this new class of composites. English AMER CERAMIC SOC GRAIN-SIZE DEPENDENCE MECHANICAL-PROPERTIES FRACTURE-TOUGHNESS MICROSTRUCTURAL DEVELOPMENT CERAMICS ALUMINA NITRIDE ENERGY In situ-toughened silicon carbide-titanium carbide composites Article 10.1111/j.1151-2916.1996.tb08791.x 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.79, no.6, pp.1711 - 1713 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 79 6 1711 1713 scie scopus A1996UT21900046 2-s2.0-0030165809 Materials Science, Ceramics Materials Science Article GRAIN-SIZE DEPENDENCE MECHANICAL-PROPERTIES FRACTURE-TOUGHNESS MICROSTRUCTURAL DEVELOPMENT CERAMICS ALUMINA NITRIDE ENERGY Silicon carbide