Multiresponse Optimization of Mechanical Properties and Formability of Hot Rolled Microalloyed Steels

摘要: In this study, a 23 factorial design analysis was conducted to screen the significant factors influencing mechanical properties and formability of Nb-microalloyed steel sheets in hot-rolling process for optimizing these predict maximum yield strength (YS), ultimate tensile (UTS), elongation (El), dome height (DH), simultaneously. For purpose, two levels major parameters roughing temperature (RT), finishing (FT), coiling (CT) were chosen; eight experiments each response conducted. From variance, most important affecting YS, UTS, El, DH determined, satisfactory prediction regression models derived. It observed that optimal condition best combination variables obtained at 1150 °C RT, 836 °C FT, 604 °C CT. Findings research show predicted values close experimental indicating suitability models.