Effect of Boron Addition on Microstructure and Corrosion Properties of CrMo Steels
Cemal ÇARBOĞA Bülent KURT B. Demirel Yavuz Sun Hayrettin Ahlatçı Engin ÇEVİK
AbstractIn this study, the effect of boron addition at different ratios (2-38 ppm) on the microstructure and corrosion properties of Cr-Mo steels was investigated. Square cross-sections of the boron containing steels obtained at different ratios measuring 40×40 mm were rolled in three passes, and a deformation of totally 200-300 percent was obtained. The rolled specimens were examined by optical microscopy and corrosion test. Electrochemical potentiodynamic polarisation measurements were taken to evaluate corrosion behaviours of the examined steels. Analysing the potentiodynamic corrosion test results applied to the CrMo steels containing boron at different ratios, it is seen that there has been increase at the corrosion rates when the boron amounts are low.