The Effect of Chemical Compositions of Steel on Nb Compound and Its Chemistry Formed in Controlled Rolled HSLA Steel Plate

The effects of C, N and Nb contents and processing variables on the chemical compositions of Nb compounds formed in controlled rolled HSLA steel plates were systematically investigated. Identification of Nb compounds and determination of X and Y values in NbCxNy were performed by chemical analysis and X-ray diffraction on the precipitates extracted by electro-chemical method. Nb compound formed in commercial HSLA steels was δ phase of NbCx or...