Prediction of Composite Strength Properties Based On The Study Of Mechanical And Physical Plastic Deformation Processes In Model Layered Single Crystals. Part I. Full-Scale Experiment
We propose an original mechanical and physical criterion for the prediction of composite strength properties. The criterion is based on the theoretical and experimental findings for the physico-mechanical mechanisms of plastic deformation and fracture of a new class of materials - model layered single crystals of type LiF-LiF:Mg2+. Compression curves for the single crystals are obtained and analyzed, and the microstructure of deformed specimens is examined. Based on the obtained results we conclude that the growth kinetics of local internal microstresses arising under plastic deformation of the matrix has a determining effect on the strength characteristics of the layered single crystals. It is necessary to account for and control the defect-containing structure of the matrix in order to retain and enhance the strength properties of composites.