Effect of Boron on Carbide Morphology of High Cr Ledeburite Steel
Effect of Boron on Carbide Morphology of High CrLedeburite Steel

The effect of boron on carbide morphology of high Cr ledeburite steel has been studied. The results showed that B had obvious influence on eutectic carbide morphology in solidification structure and carbide granulation at high temperature. The addition of 0.02-0.05 wt pct B changed carbide morphology in solidification structure from strip eutectic and rosette eutectic into divorced eutectic. B accelerated carbide granulation through increasing unstability and lattice distortion of carbide and element diffusion. Granular carbide could be achieved when heated at 1150°C for 1.5 h.