Tensile Behavior of Microcracking SiC-TiB2 Composites

The stress–strain behavior of microcracking SiC‐TiB2 composites was studied using uniaxial tensile tests. The nonlinear stress–strain behavior provided the critical stresses for microcracking (defined as the proportional limit) and the magnitude of residual strain release as a consequence of stress‐induced microcracking. The release of residual strain was confirmed using the loading–unloading process. Both the critical stress for the nonlinear stress–strain curve and the release of residual strain were used to establish the maximum principal stress as the stress criterion for microcracking.