Microstructural studies and analysis of residual stresses in Co–TiC composites obtained by the spontaneous crystallization method

Abstract

Microstructural studies and analysis of internal stresses in Co–TiC composites prepared by the spontaneous crystallization method (high-temperature solution technique) have been performed. Metallographic observations and X-ray phase analysis of the obtained Co–TiC composite ingots were carried out. The microstructure of the Co–TiC interface was studied using transmission electron microscopy and high-resolution transmission electron microscopy. The Co–TiC composites were also subjected to numerical analysis by the finite-element method. The presented results of calculations include the analysis of the state of internal stresses generated in the composite during its cooling from the crystallization temperature to room temperature. On the basis of these results the internal stress distribution and its level were determined for the obtained Co–TiC composites.