Basic Study of Dispersion Hardening for the Attainment of High Temperature Strength in Materials

摘要

Electron microscope studies of the substructure of nickel strengthened by dispersed particles of thoria were made . The particle size distribution of thoria in the 'as received' material was determined from electron transmission micrographs of thin films, as a basis for future studies of the effect of temperature upon size distribution and bulk strength. In addition, a color photography technique were developed which will be employed in studies of dispersed particles.