Mode I fracture toughness of SiC particle-dispersed ZrB2 matrix composite measured using DCDC specimen

Mechanical Properties of Zirconium‐Diboride Based UHTCs

“…Liu's work [50] showed that toughness followed a similar trend to strength for nanosized SiC, increasing from 3.1 MPa · m ½ for ZrB 2 to 6.8 MPa · m ½ for 20 vol% SiC then decreasing to 5.9 MPa · m ½ for 30 vol% SiC (along with observed formation of percolation clusters). Kurihara et al [59] reported falling R-curve behavior for ZrB 2 -10 vol% SiC and Bird et al [60] reported rising R-curve behavior for ZrB 2 -20 vol% SiC. Figure near ZrB 2 -SiC interfaces.…”

In situ experimental study on fracture toughness and damage mechanism of TiB2‐reinforced steel matrix composites

“…Actually, the microstructure characteristics of reinforced particles could change the crack propagation path, which closely affects the fracture properties of PRMMCs. 20,21 He et al 22 systematically studied the influence of the size and volume fraction of Al 3 Ti particles on the fracture properties of Al-Al 3 Ti composite. Al 3 Ti particle fracture and void development starting at the fractured particles were the main damage mechanisms in the material.…”

“…However, other important mechanical properties, such as fracture toughness, are seldom reported. Actually, the microstructure characteristics of reinforced particles could change the crack propagation path, which closely affects the fracture properties of PRMMCs 20,21 . He et al 22 systematically studied the influence of the size and volume fraction of Al 3 Ti particles on the fracture properties of Al‐Al 3 Ti composite.…”

Mechanical Characterization of Annealed ZrB2–SiC Composites

“…Composites based on ZrB 2 , specifically those produced using silicon carbide (SiC) particle additions, have been shown to exhibit additional advantageous properties. Particulate reinforced ZrB 2 –SiC composites exhibit strengths that can be in excess of 1000 MPa along with fracture toughness values as high as 5.5 MPa m 1/2 . The addition of SiC has also been shown to improve the oxidation resistance of ZrB 2 ‐based composites.…”

“…Particulate reinforced ZrB 2 -SiC composites exhibit strengths that can be in excess of 1000 MPa [16][17][18][19] along with fracture toughness values as high as 5.5 MPa m 1/2 . 16,[20][21][22] The addition of SiC has also been shown to improve the oxidation resistance of ZrB 2 -based composites. The SiC phase preferentially oxidizes creating a silica layer on the surface of the composite which retards the rate of oxidation of the underlying material.…”