曹磊, 王国连. Investigation of Surface Crack of Nb-V-Ti Micro-Alloyed Steel Plate by 250 mm Casting Slab Hot Charging Process[J]. Special Steel, 2018, 39(4): 55-57.
曹磊, 王国连. Investigation of Surface Crack of Nb-V-Ti Micro-Alloyed Steel Plate by 250 mm Casting Slab Hot Charging Process[J]. Special Steel, 2018, 39(4): 55-57.DOI:
Surface crack on micro-alloyed steel plate produced by hot charging process was investigated by means of metallographic analysis
energy spectrometer analysis and contrast test of HCR and CCR. The results show that the main factors of surface crack on micro-alloyed steel plate produced by hot charging process are not the cracks on slab but the precipitation of a large of fine carbon and nitrogen compound at the boundary of the austenite grains
which decreases the strength of the grain boundary sharply.