Influence of Vanadium and Cast Temperature on Nitrogen Solubility in Fe-Cr-Ni-Mn System
Factorial design was used to investigate the effect of vanadium and cast temperature on nitrogen solubility in stainless steel with base chemical composition 18.6%Cr,2.54%Mo,5.37%Mn and 6.54%Ni with different vanadium contents.Four heats were produced in 30 kg.induction furnace.Vanadium content in first steel grade was 0.009% and in the second grade was 0.189%.The two steel grades were cast at temperatures 1753 K and 1833 K.Nitrogen content was determined after each heat.Nitrogen determination was repeated two times.The effects of cast temperature and vanadium concentration were investigated by using Factorial design.The regression model used to deduce these effects as given in equation.N% = 0.4266375 - 0.0001875T + 0.22777778V% The results showed that the temperature has low adverse effect and vanadium has high positive effect on nitrogen solubility - while the interaction of cast temperature and vanadium concentration has negligible influence compared to temperature and vanadium concentration.The predicted nitrogen content as a function in cast temperature and vanadium content is agreement with the experimental results.Factorial design is a useful tool to predict the nitrogen solubility in Fe-Cr-Ni-Mn system.It is recommended to use factorial design in metallurgical process.
nitrogen solubility factorial design vanadium temperature stainless steel
GHALI Saeed EL-FARAMAWY Hoda
Central Metallurgical Research & Development Institute(CMRDI), BOX: 87 Helwan, Cairo, Egypt
国际会议
成都
英文
476-482
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）