The partitioning of solute elements during intercritical annealing and the effects on ferrite transformation slow cooling after in a 0.17% C-1.5% Si-1.7% Mn (mass%) steel were investigated by new FE-EPMA (field emission electron probe microanalysis) technique. This technique enables highly accurate measurement C distribution. During annealing, concentrated into austenite, while Si ferrite. dist...

The degree to which parameters affect the spheroidization heat treatment of steel was calculated by setting conditions Cr-Mo and using data analysis such as S/N ratio ANOVA. After analyzing transformation temperatures steel, Ac1 Ac3 , a DSC, were set accordingly. surface hardness measured for used an evaluation index. correlation analyzed comparing spheroidized volume fraction hardness, Pearson...

Abstract A novel medium manganese steel with composition Fe–8.3Mn–3.8Al–1.8Si–0.5C–0.06V–0.05Sn was developed and thermomechanically processed through hot rolling intercritical annealing. The possessed a yield strength of 1 GPa, tensile 1.13 GPa ductility 41 pct. In order to study the effect cold after annealing on subsequent properties, further rolled up 20 pct reduction. After rolling, it obs...

The manufacturing of Dual-Phase steels includes as a crucial step the annealing cold-rolled ferrite-pearlite (F/P) microstructure, which involves numerous and interacting metallurgical mechanisms, namely recovery/recrystallization ferrite, globularization, manganese enrichment, coarsening cementite finally austenite transformation. Present study focuses on transformation considering its interac...