FRACTURE SURFACE OF A WELD SEAM IN THE BLAST-FURNACE CASING

摘要

Data on the weld-seam structure and fracture surface shows that the mechanical characteristics of the seam material are directly related to the grain structure: when the mean grain size is lower, the strength is higher. This is evidently not the only mechanism of strengthening. Investigation of the physical mechanisms underlying weld-seam strength calls for detailed analysis of the intragrain structure by diffractional electron microscopy.