Abstract: The deformation and fracture behaviors of ductile materials under complex stress states are usually quite different from those under uniaxial loading conditions. In recent years, the development of fracture criteria and their application in numerical simulation have attracted great attention in many engineering fields. So, it is quite important to analyze the applicability of different fracture criteria over a wide range of stress states and select an appropriate model to accurately predict the fracture behavior. The fracture behavior of in-situ TiB₂/2024 Al composite was investigated systematically over stress triaxialities ranging from −0.82 to 1.03, and lode angel parameters ranging from −1 to 1 by using an experimental approach. The fracture characteristics and underlying mechanisms are closely related to stress state, and both of the stress triaxiality and lode angle parameter should be included in the fracture criterion to predict fracture over a wide range of stress states. Based on the experimental data, five existing fracture criteria were calibrated, and their ability to describe and predict the fracture behavior was evaluated. The result shows that the fracture criteria which consider comprehensively the effects of the stress triaxiality, lode angle parameter and cut-off value can more accurately predict the fracture behavior of in-situ TiB₂/2024 Al composite over a wide range of stress states.