In the current study, the recrystallization behavior of 75% cold-rolled Fe-22Mn-10Al-1.4C steel during annealing at 750, 770, 790, 810, and 830°C was studied. X-ray diffraction patterns and optical microscopy were used to characterize microstructures. The Vickers Micro-hardness test was used to characterize recrystallization kinetics during annealing. Johnson-Mehl-Avrami-Kolmogorov (JMAK) model...

To understand the reaction mechanism between high Mn-high Al steel and slag, experiment of Fe-Mn-Al melts with CaO-SiO2-type flux was carried out in MgO crucible at 1873 K. The evolution morphology interface inspected firstly, then global kinetics modeled consideration effect dynamic interfacial phenomena. results show that Fe-5 mass % alloy SiO2 or low protective strong chemical affinity metal...

Cyclic behavior of a high-Mn austenitic steel with fine (~2 µm) and larger (~5 grains was investigated under high-cycle bending fatigue at room temperature. Microhardness initially increased as sign cyclic hardening until 20,000 cycles saturated thereafter. Deformation mechanisms varied widely in grains, depending on their sizes. Stacking faults were predominant the while interconnected disloca...

Metallic piercing which have lack of resistance to sweat corrosion might be able to release metallic ions in the local tissue producing adverse effects in the human body, including allergic contact dermatitis (ACD). The aim of this study was double: 1) the metallic characterization of piercings and 2) the release of metals (Al, Co, Cr, Cu, Fe, Ir, Mn, Ni, Pd, Pt, Rh, Ti, V and Zn) in artificial...

In the present study, the evolution of microstructure in laser-welded joints of ferrite-based dual-phase Fe-Al-Mn-C steel sheets was analyzed and its effect on the mechanical properties of the joints was investigated. Laser welding was performed using different powers and welding speeds to attain different heat inputs. Electron backscatter diffraction (EBSD) examinations and hardness measuremen...

The microstructural evolution of a Fe-Mn-Al-Ni-C low-density steel was studied. lightweight steels are promising material for the transportation industry, due to their good mechanical properties and low density. base microstructure investigated consists ferrite austenite. Thermo-Calc calculations showed formation an ordered BCC (body-centred cubic) B2 phase below 1181 °C kappa carbides 864 °C. ...

Austenite formation and its decomposition control the final microstructure and performance of steel welds. This paper presents an in-situ characterization of austenite formation and its decomposition in both the fusion zone (FZ) and heat-affected zone (HAZ) of an Fe-C-Al-Mn steel using time-resolved X-ray diffraction (TRXRD) with synchrotron radiation. Measurement of X-ray diffraction spectra a...