Developments in Plate and Line Pipe Steels: On-Demand Oral Presentations
Sponsored by: AIST Metallurgy—Processing, Products and Applications Technology Committee
Program Organizers: Daniel Baker, LIFT; Ashish Singh, Nucor Steel Arkansas; Pello Uranga, CEIT and TECNUN (University of Navarra)
Friday 8:00 AM
October 22, 2021
Room: On-Demand Room 8
Location: MS&T On Demand
Optimization of Strength and Toughness for Hot-forged Bainitic Medium Carbon Steel using RSM: Iman El Mahallawi1; Tamer Mohamed2; Abdelwahab Hussein2; Ahmed Shash3; Taha Mattar4; 1Cairo University/ Adjunct The British University in Egypt; 2The British University in Egypt; 3Cairo University/ seconded German University in Cairo; 4Central Metallurgical Research and Development Institute (CMRDI)
This work presents the experimental results and statistical analysis of the strength and toughness for an isothermally heat-treated medium carbon steel of composition 0.415% C, 1.67% Si, 1.22% Mn, 0.97% Cr, and 0.29% Mo, with varying Al contents in the range (0.00-1.16%) by response surface methodology (RSM). The effect of aluminum content, as well as the isothermal treatment at 300°C for 24-120 hrs in terms of varying the holding time is studied and correlated with the mechanical properties of the steel and state of art findings. Design of experiments and ANOVA were implemented for statistical analysis using Design Expert software. The results show the predicted range of combinations of Al wt.% and holding time that yields the highest values of the responses (Yield strength, ultimate tensile strength, impact energy and hardness). Moreover, the regression equations for each response and the optimum values of the controllable factors to maximizes the responses values are introduced.